THE integrated circuit (IC) industry, both domestic and foreign,

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "THE integrated circuit (IC) industry, both domestic and foreign,"

Transcription

1 IEEE TRANSACTIONS ON MAGNETICS, VOL. 41, NO. 3, MARCH Application of Voice Coil Motors in Active Dynamic Vibration Absorbers Yi-De Chen, Chyun-Chau Fuh, and Pi-Cheng Tung Abstract A dynamic vibration absorber reduces the influence of a force whose excitation frequency nearly coincides with the natural frequency of a rotating machine. However, the performance of this type of passive absorber can be affected by changes in the environment. In this paper, we describe a voice coil motor (VCM) that can serve as the actuator in an active dynamic vibration absorber which can be regulated for different conditions. With a VCM, suitable controllers can be designed for periodic excitation force rejection by using the characteristics of the notch filter in combination with the root-locus theorem. We have evaluated the performance of the active vibration absorber by both simulations and experiments. Index Terms Active vibration absorber, notch filter, root-locus theorem, voice coil motors. I. INTRODUCTION THE integrated circuit (IC) industry, both domestic and foreign, has had a higher growth rate than others. Since the IC industry requires highly developed technology and high-precision manufacturing, its corresponding production machinery and measuring devices are very sensitive to vibrational noise. A small amount of vibration may introduce undesirable noise and act as a source of vibration in the mechanical system, which affects the accuracy and may shorten the lifetime of the machine. Thus vibration control, that is attenuation of undesirable vibration from various sources, has become an important research topic. The most common method for the control of vibration has been to use vibration isolators or vibration absorbers to reduce or eliminate vibrations. The former method uses an isolator between the vibrated mass and the source of the vibration, to reduce the transmission of the excitation forces. In general, vibration isolators [1] can be divided into two types: passive and active. The main difference between them is that the active type provides power for the performance of vibration control. The dynamic vibration absorber [2] is designed to reduce the influence of a force whose excitation frequency is nearly coincidental with the natural frequency of the system. An ideal undamped dynamic vibration absorber [3] consists of an auxiliary mass and a stiff spring, tuned to the excitation frequency necessary to cause the steady amplitude of the system to be near zero at that frequency. However, if the system operates at other frequencies, Manuscript received June 22, 2004; revised November 30, Y.-D. Chen and P.-C. Tung are with the Department of Mechanical Engineering, National Central University, Taoyuan 32054, Taiwan, R.O.C. ( C.-C. Fuh is with the Department of Mechanical and Mechatronic Engineering, National Taiwan Ocean University, Keelung 20224, Taiwan, R.O.C. ( Digital Object Identifier /TMAG or if the excitation force has several varying frequencies, the amplitude of the vibration of a dynamically vibration absorber system may become large. On the other hand, an active dynamic vibration absorber [4], [5] can be tuned according to the system characteristics, to meet the desired requirements. Hence, active vibration control can be used to solve vibration problems, in spite of its higher cost and complexity. The actuators of active dynamic absorbers can be separated into several types: mechanical mechanisms, piezoelectric actuators [6], pneumatic springs [7], cylinders [8], electromagnetic motors [9], and electrical linear motors (linear actuators [10], [11]). The last two have some advantages, such as a faster response time and greater precision, so there has been more research into the correlative technology. It is more complex to control because magnetic forces belong to an unstable nonlinear system, and electromagnetic motors need the addition of a gear transmission to convert the rotational motion into translational motion. In contrast, the employment of a linear motor can avoid these drawbacks, as well as having the desirable features of low noise and low vibration. Their simple structure and direct drive make them easy to maintain, and they provide the ability of acceleration and deceleration. The voice coil motor (VCM) [12] is one type of linear motor, originally used in amplifiers. VCM actuators are usually used in occasions that rapid and controlled motions of devices are required. In general, VCM has many applications, such as in the servo control of the DVD [13], the hard disc [14], and the camera lens. Thus, in our experiments, the VCM is chosen to be the absorber actuator as it performs well in terms of vibration rejection. Periodic disturbances occur in many engineering control applications, commonly in rotating machinery. Several methods are available for the rejection of sinusoidal disturbances. One common method, based on the internal model principle (IMP) [15], states that a model of the system generating the disturbance must be included in the feedback system. Such an approach is based on notch filtering [16], [17], which adds a notch filter at the synchronous frequency into the loop. Another method is adaptive feedforward cancellation (AFC) [18], which can be used to estimate the magnitudes of unknown sinusoidal disturbances. In this paper, the method proposed for the design of a suitable controller by which a periodic excitation force can be rejected is based on the characteristics of the notch filter. The method uses a simple root-locus theorem to design controllers which correspond to the different frequencies of the excitation forces. The advantage of this method is that the addition of a notch controller only influences the designed frequency response /$ IEEE

2 1150 IEEE TRANSACTIONS ON MAGNETICS, VOL. 41, NO. 3, MARCH 2005 Fig. 1. Schematic of the VCM structure. Fig. 3. Experimental platform. TABLE I SPECIFICATIONS OF THE PLATFORM WITH AN ACTIVE ABSORBER Fig. 2. Chart of the distribution of the magnetic lines of force. II. SYSTEM DESCRIPTION AND THE MATHEMATICAL MODEL A. Voice Coil Motor The VCM is a direct drive motor that utilizes a permanent magnetic field and coil winding to produce a force proportional to the current applied to the coil. Its simple structure makes it easy to maintain. It can provide superior acceleration and deceleration via the magnetic force. The VCM structure used in the experiments is shown in Fig. 1 and a chart of the distribution of the magnetic lines of force is shown in Fig. 2. The magnetic field is produced by permanent magnets placed on the both sides of a permeable material such as silicon steel or low-carbon steel. The Lorentz force equation can be used to compute the thrust on the coil when it is electrified in the magnetic field. The thrust decides the direction of the coil s movement where represents the thrust on the coil, is the ratio of the effective length to the whole length of the coil in the magnetic field, is the current of the coil, and is the magnetic flux density. When and are vertical to each other, the direction of can be decided by Fleming s left-hand rule. Under this condition, (1) can be rewritten as (1) (2) where is called the force constant. Thus, the thrust on the coil can be controlled by regulating the input current. The current can be regulated by the control signal, expressed as a voltage command, so the relation between control force and control signal can be shown as where is a constant between voltage and current, and is a constant. B. System Description To reject vibration induced by an excitation force, an active dynamic absorber is added to the platform. The VCM is used as an actuator for the dynamic absorber. The experimental platform, with the active dynamic absorber, is illustrated in Fig. 3 and the specifications of the platform are given in Table I. The coil remains vertical by using a linear guideway. To analyze the system dynamics more easily, the model, including the active dynamic absorber, is simplified shown in Fig. 4. The assumption here is that the force generated by the actuator will be substituted for the excitation force. The mass, the stiffness, and the damping coefficient composing the upper components, together form the active dynamic vibration absorber of the model. The active dynamic vibration absorber can provide a controlling force, which controls the vibration. Before adding this active vibration absorber into a system, the original lower components must be modeled, that is the mass, the stiffness (3)

3 CHEN et al.: APPLICATION OF VOICE COIL MOTORS IN ACTIVE DYNAMIC VIBRATION ABSORBERS 1151 Fig. 4. Schematic of the platform with an active dynamic absorber. Fig. 5. (a) Block diagram of the LTI plant perturbed by a periodic excitation force. (b) Block diagram of the feedback control using the notch controller to reject the periodic excitation force., and the damping coefficient of the original plant. The plant is affected by an excitation force. C. Mathematical Model By employing a free-body diagram and Newton s second law of motion, the governing equations can be deduced. The original 2-degree system, composed of the lower components, can be simplified into where the states represent the position and the velocity responses of the original platform. When an active vibration absorber is added to the system, the dynamic equation can be rewritten as where and the two states represent the position and the velocity responses of the active dynamic vibration absorber, respectively. The signals and represent the excitation force and the control force, respectively; see Fig. 4. The relation between the position output, the control force, and the excitation force can be expressed via the transfer function as Thus, represents the characteristic equation of the plant (4) (5) (6) (7) Fig. 5(a) shows the organization of a linear-time-invariant system perturbed by a periodic excitation force, represented by where and and are the Fourier coefficients of the synchronous excitation force at the frequency. III. PERIODIC EXCITATION FORCE REJECTION METHOD In order to counter the effects of an excitation force with a suitable control force, the notch controller is adopted. The notch controller discussed in this paper applies a notch filter combined with the root-locus theorem. In general, a notch filter [19] is used to reduce any system response to some assigned frequency. For instance, it is often applied for the suppression at high-frequency disturbances in communications technologies. From the frequency-domain standpoint, the notch filter does not affect properties of the other frequencies of the system, only the assigned frequency. The notch filter transfer function is a function of both the Laplace variable and the excitation force frequency. The standard form is where the two coefficients are defined as and. The parameter is the damping ratio of the notch filter. For the situation, is a common notch filter which reduces the response of the system and can be aimed at a specific frequency. The attenuation provided by the magnitude of is (8) (9) (10) On the other hand, the notch filter will amplify the system s response for the situation. Thus, it can be seen that the variable decides the gain ratio and the direction of the notch in the magnitude plot. With different directions, the notch

4 1152 IEEE TRANSACTIONS ON MAGNETICS, VOL. 41, NO. 3, MARCH 2005 filter can amplify or reduce the system response. The other variable can determine the notch width for the designed frequency. Under experimental conditions, a notch controller cannot be added between the excitation force and the plant, that is to say the influence from outside on the platform cannot be directly reduced by the common notch filter. Thus, a novel method, different from the common notch filter, is presented. The opposite notch filter application, namely, the situation, is chosen. The controlling force is designed as the amplified system response, as shown in Fig. 5(b). We let the control force cancel the excitation force to decrease the effect from outside to the system. Unfortunately, the step whereby the notch filter is added into the system alters the closed-loop system s stability. The transfer function for this closed-loop system, including the notch filter, can be described as follows: Fig. 6. Frequency response diagram of the experimental system. signal, and represents the amplitude of the output signal. As seen from (3) and (6), the transfer function can be written as (11) Apparently, becomes small when is large. This means that can be employed to reduce the influence from the excitation force on the system. However, the system s stability, as affected by, should be taken care of simultaneously. To avoid instability, the root-locus theorem is employed to design the most appropriate notch controller. The characteristic equation for determining variables and can be separately expressed as (13) where and are the natural frequencies of the system. The frequencies and are obviously defined in Fig. 6. By adjusting parameter, we can change the gain. Similarly, by adjusting parameters and, we can change the damping ratio. A curve, fitting, approximating the real system responses, can be calculated by regulating the parameters, and. Via the parameter estimation method, the transfer function can be expressed as (12) By using the root-locus theorem, suitable values for the notch filter parameters and can be obtained to allow good performance and to maintain the stability of the system. Since the parameters and are coupled, one of them must be given before the root locus can be applied. The parameter that can be regulated to avoid some problems such as modeling errors, uncertainties, and disturbances is given in advance. Then the criterion for choosing the parameter is based on finding the optimal dominant root under different frequencies. The optimal dominant root let the system response be fastest. IV. SIMULATION AND EXPERIMENTAL RESULTS Although the system model type is known from (5), the parameters of the dynamic equation are unknown. Before the design at the controller can be completed, the characteristics of the system must be known. Since the system is a minimum phase system, only the magnitude response is considered. Thus, with suitable sine waves having different frequencies as the input, the frequency response diagram can be obtained by measuring the output, namely, the displacement of the platform, as shown in Fig. 6. The symbol represents the amplitude of the input (14) This model, based on the system identification results, is adopted for the simulation and the experiments. In the proposed method, parameters and should be decided on first. The parameter,,influences the magnitude of the system response and the direction of the notch filter. Parameter determines the notch width aimed the design frequency, that is to say, the regulation at parameter allows one to avoid some problems such as modeling errors, uncertainties, and disturbances. According to the parameter, the error range of the corresponding design frequency value can be decided. In the simulation and the experiments, is set as The addition of a notch filter to the plant changes the system s stability; therefore, the root-locus method should be employed to design an appropriate notch filter. The criterion for choosing the parameter is based on finding the optimal dominant root under different frequencies. When the excitation frequency is 25 rad/s, the root-locus plot is shown as Fig. 7. For faster system responses, the optimal dominate root is obtained when the parameter is set to be Then the addition of a suitable notch filter to this plant leads to the system responses shown as Fig. 8. To maintain

5 CHEN et al.: APPLICATION OF VOICE COIL MOTORS IN ACTIVE DYNAMIC VIBRATION ABSORBERS 1153 TABLE II EXPERIMENTAL PARAMETERS FOR THE DESIGN NOTCH CONTROLLER WITH DIFFERENT FREQUENCIES OF EXTERNAL FORCE Fig. 7. Root-locus plot in function of K at! =25(rad/s). Fig. 9. Resolution chart of the eddy-current sensor. Fig. 8. Frequency response diagram of the system and the system with a notch filter aimed at! =25(rad/s). system stability under different frequencies, different values for parameters are calculated, and are shown in Table II. In the simulation and the experiments, for generating a periodic excitation force, the force is set as and the sampling time is s. A control force is added to eliminate the periodic excitation force 3 s after starting the system. In the experiments, the displacement of the middle platform is detected by eddy-current gap sensors (IAS-10-A24-IL). The curve showing the relation between the position and the voltage can be seen in the resolution chart in Fig. 9. By fitting to the curve, we obtain the following expression for the position as a function of the voltage : (15) The initial reference mark set as 2.7 V, that is to say, the distance between the initial location of the middle platform and the eddycurrent gap sensor is 7.62 mm. When an excitation force with a frequency of 15 rad/s affects the system, the resultant simulation and experimental results are illustrated in Figs. 10 and 11. Fig. 10 presents the simulation results for a system with a notch controller influenced by an excitation force. Fig. 11 shows the experimental results Fig. 10. Simulation results for a notch controller system for the rejection of an excitation response when! =15(rad/s). contrasted with Fig. 10. On the premise that the uncertainty is ignored in the experimental process, the simulation result and experimental result are similar and reasonable. The parameters of the notch controller according to the different frequencies are calculated in advance and shown in Table II. By the relation between the position and the voltage in (15), the experimental frequency responses for the uncontrolled system and a notch controller system at different frequencies are shown in Fig. 12. The results show that a notch controller can help to alleviate periodic

6 1154 IEEE TRANSACTIONS ON MAGNETICS, VOL. 41, NO. 3, MARCH 2005 at the parameter. Simultaneously, the tolerant error range of the corresponding frequency can be adjusted by the other parameter. From the design viewpoint, the notch controller has the advantage of being directly perceivable through the senses; however, the employment of the VCM as an actuator can accomplish an effective dynamic vibration absorber. Fig. 11. Experimental results for a notch controller system for the rejection of an excitation response when! =15(rad/s). Fig. 12. Experimental results of the frequency responses for an uncontrolled system and a notch controller system, at different frequencies. excitation force problems and to maintain the system s stability by using the root-locus theorem. V. CONCLUSION In this paper, a VCM is chosen to be the actuator in an active dynamic absorber for the achievement at vibration control. A notch controller provides the control force, which cancels the excitation force, thus decreasing the outside effects on the system. According to the simulation and the experimental results, vibrations can be effectively reduced by using this active dynamic absorber. The use of the notch controller can lead to a quick reduction of the influence of an excitation force. The notch controller achieves a better performance by the regulation REFERENCES [1] S. S. Rao, Mechanical Vibrations, 4th ed. Upper Saddle River, NJ: Pearson, 2004, pp [2] B. G. Korenev and L. M. Reznikov, Dynamic Vibration Absorbers Theory and Technical Applications. New York: Wiley, 1993, pp [3] B. A. Francis and W. M. Wonham, The role of transmission zeros in linear multivariable regulators, Int. J. Control, vol. 22, no. 5, pp , [4] S.-J. Huang and R.-J. Lian, A dynamic absorber with active vibration control, J. Sound Vib., vol. 178, no. 3, pp , Dec [5] T. Mizuno, M. Moriya, and K. Araki, Robust disturbance cancellation in an active dynamic vibration absorber system, Control Eng. Practice, vol. 3, no. 6, pp , Jun [6] J. X. Gao and L. Cheng, Modeling of a high performance piezoelectric actuator assembly for active and passive vibration control, Smart Mater. Struct., vol. 13, no. 2, pp , Apr [7] G. L. Giliomee and P. S. Els, Semi-active hydropneumatic spring and damper system, J. Terramechanics, vol. 35, no. 2, pp , Apr [8] X. Pan and C. H. Hansen, Active control of vibration transmission in a cylindrical shell, J. Sound Vib., vol. 203, no. 3, pp , Jun [9] D.-H. Cho and H.-J. Kim, Modeling of electromagnetic excitation forces of small induction motor for vibration and noise analysis, in IEE Proc.: Elect. Power Appl., vol. 145, May 1998, pp [10] H.-P. Kelly, Linear drives, Industrial Robot, vol. 20, no. 6, pp. 8 11, [11] A. M. Madni, J. B. Vuong, M. Lopez, and R. F. Wells, A smart linear actuator for fuel management system, BEI Technol., vol. 16, pp , [12] A. Babinski and T. C. Tsao, Acceleration feedback design for voice coil actuated direct drive, in Amer. Control Conf., vol. 5, 1999, pp [13] C.-L. Chu, K.-C. Fan, and Y.-J. Chen, A compensation method for the hysteresis error of DVD VCM, Meas. Sci. Technol., vol. 15, no. 4, pp , Apr [14] R. Oboe, F. Marcassa, P. Capretta, and F. C. Soldavini, Realization of a hard disk drive head servo-positioning system with a voltage-driven voice-coil motor, Microsyst. Technol., vol. 9, no. 4, pp , Mar [15] G. Feng and M. Palaniswamy, A stable adaptive implementation of the internal model principle, IEEE Trans. Autom. Control, vol. 37, no. 8, pp , Aug [16] C. R. Knospe, Stability and performance of notch filter controllers for unbalance response, in Proc. Int. Symp. Magn. Suspension Technol.. Hampton, VA, 1991, NASA Conf. Pub [17] R. Herzog, P. Buhler, C. Gahler, and R. Larsonneur, Unbalance compensation using generalized notch filters in the multivariable feedback of magnetic bearings, IEEE Trans. Contr. Syst. Technol., vol. 4, no. 5, pp , Sep [18] H. S. Na and Y. Park, An adaptive feedforward controller for rejection of periodic disturbances, J. Sound Vib., vol. 201, no. 4, pp , [19] G. M. L. Gladwell, Vibration control of active structures, Sol. Mech. Appl., vol. 50, pp , 1997.

MAGNETIC LEVITATION SUSPENSION CONTROL SYSTEM FOR REACTION WHEEL

MAGNETIC LEVITATION SUSPENSION CONTROL SYSTEM FOR REACTION WHEEL IMPACT: International Journal of Research in Engineering & Technology (IMPACT: IJRET) ISSN 2321-8843 Vol. 1, Issue 4, Sep 2013, 1-6 Impact Journals MAGNETIC LEVITATION SUSPENSION CONTROL SYSTEM FOR REACTION

More information

3.1.Introduction. Synchronous Machines

3.1.Introduction. Synchronous Machines 3.1.Introduction Synchronous Machines A synchronous machine is an ac rotating machine whose speed under steady state condition is proportional to the frequency of the current in its armature. The magnetic

More information

System Inputs, Physical Modeling, and Time & Frequency Domains

System Inputs, Physical Modeling, and Time & Frequency Domains System Inputs, Physical Modeling, and Time & Frequency Domains There are three topics that require more discussion at this point of our study. They are: Classification of System Inputs, Physical Modeling,

More information

Design of Fractional Order Proportionalintegrator-derivative. Loop of Permanent Magnet Synchronous Motor

Design of Fractional Order Proportionalintegrator-derivative. Loop of Permanent Magnet Synchronous Motor I J C T A, 9(34) 2016, pp. 811-816 International Science Press Design of Fractional Order Proportionalintegrator-derivative Controller for Current Loop of Permanent Magnet Synchronous Motor Ali Motalebi

More information

POSITION TRACKING PERFORMANCE OF AC SERVOMOTOR BASED ON NEW MODIFIED REPETITIVE CONTROL STRATEGY

POSITION TRACKING PERFORMANCE OF AC SERVOMOTOR BASED ON NEW MODIFIED REPETITIVE CONTROL STRATEGY www.arpapress.com/volumes/vol10issue1/ijrras_10_1_16.pdf POSITION TRACKING PERFORMANCE OF AC SERVOMOTOR BASED ON NEW MODIFIED REPETITIVE CONTROL STRATEGY M. Vijayakarthick 1 & P.K. Bhaba 2 1 Department

More information

Adaptive Notch Filter Using Real-Time Parameter Estimation

Adaptive Notch Filter Using Real-Time Parameter Estimation IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, VOL. 19, NO. 3, MAY 2011 673 Adaptive Notch Filter Using Real-Time Parameter Estimation Jason Levin, Member, IEEE, Néstor O. Pérez-Arancibia, Member, IEEE,

More information

Speed control of Permanent Magnet Synchronous Motor using Power Reaching Law based Sliding Mode Controller

Speed control of Permanent Magnet Synchronous Motor using Power Reaching Law based Sliding Mode Controller Speed control of Permanent Magnet Synchronous Motor using Power Reaching Law based Sliding Mode Controller NAVANEETHAN S 1, JOVITHA JEROME 2 1 Assistant Professor, 2 Professor & Head Department of Instrumentation

More information

On-Line Dead-Time Compensation Method Based on Time Delay Control

On-Line Dead-Time Compensation Method Based on Time Delay Control IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, VOL. 11, NO. 2, MARCH 2003 279 On-Line Dead-Time Compensation Method Based on Time Delay Control Hyun-Soo Kim, Kyeong-Hwa Kim, and Myung-Joong Youn Abstract

More information

MAGNETIC SERVO levitation (MSL) [4], [7], [8],

MAGNETIC SERVO levitation (MSL) [4], [7], [8], IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 45, NO. 6, DECEMBER 1998 921 Sliding-Mode Control of a Nonlinear-Input System: Application to a Magnetically Levitated Fast-Tool Servo Hector M. Gutierrez,

More information

FlexLab and LevLab: A Portable Lab for Dynamics and Control Teaching

FlexLab and LevLab: A Portable Lab for Dynamics and Control Teaching FlexLab and LevLab: A Portable Lab for Dynamics and Control Teaching Lei Zhou, Mohammad Imani Nejad, David L. Trumper Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge,

More information

Design Of PID Controller In Automatic Voltage Regulator (AVR) System Using PSO Technique

Design Of PID Controller In Automatic Voltage Regulator (AVR) System Using PSO Technique Design Of PID Controller In Automatic Voltage Regulator (AVR) System Using PSO Technique Vivek Kumar Bhatt 1, Dr. Sandeep Bhongade 2 1,2 Department of Electrical Engineering, S. G. S. Institute of Technology

More information

Active Stabilization of a Mechanical Structure

Active Stabilization of a Mechanical Structure Active Stabilization of a Mechanical Structure L. Brunetti 1, N. Geffroy 1, B. Bolzon 1, A. Jeremie 1, J. Lottin 2, B. Caron 2, R. Oroz 2 1- Laboratoire d Annecy-le-Vieux de Physique des Particules LAPP-IN2P3-CNRS-Université

More information

Nonlinear Control Lecture

Nonlinear Control Lecture Nonlinear Control Lecture Just what constitutes nonlinear control? Control systems whose behavior cannot be analyzed by linear control theory. All systems contain some nonlinearities, most are small and

More information

MTE 360 Automatic Control Systems University of Waterloo, Department of Mechanical & Mechatronics Engineering

MTE 360 Automatic Control Systems University of Waterloo, Department of Mechanical & Mechatronics Engineering MTE 36 Automatic Control Systems University of Waterloo, Department of Mechanical & Mechatronics Engineering Laboratory #1: Introduction to Control Engineering In this laboratory, you will become familiar

More information

Analysis of Indirect Temperature-Rise Tests of Induction Machines Using Time Stepping Finite Element Method

Analysis of Indirect Temperature-Rise Tests of Induction Machines Using Time Stepping Finite Element Method IEEE TRANSACTIONS ON ENERGY CONVERSION, VOL. 16, NO. 1, MARCH 2001 55 Analysis of Indirect Temperature-Rise Tests of Induction Machines Using Time Stepping Finite Element Method S. L. Ho and W. N. Fu Abstract

More information

DEPARTMENT OF ELECTRICAL AND ELECTRONIC ENGINEERING BANGLADESH UNIVERSITY OF ENGINEERING & TECHNOLOGY EEE 402 : CONTROL SYSTEMS SESSIONAL

DEPARTMENT OF ELECTRICAL AND ELECTRONIC ENGINEERING BANGLADESH UNIVERSITY OF ENGINEERING & TECHNOLOGY EEE 402 : CONTROL SYSTEMS SESSIONAL DEPARTMENT OF ELECTRICAL AND ELECTRONIC ENGINEERING BANGLADESH UNIVERSITY OF ENGINEERING & TECHNOLOGY EEE 402 : CONTROL SYSTEMS SESSIONAL Experiment No. 1(a) : Modeling of physical systems and study of

More information

Fundamentals of Servo Motion Control

Fundamentals of Servo Motion Control Fundamentals of Servo Motion Control The fundamental concepts of servo motion control have not changed significantly in the last 50 years. The basic reasons for using servo systems in contrast to open

More information

ANNA UNIVERSITY :: CHENNAI MODEL QUESTION PAPER(V-SEMESTER) B.E. ELECTRONICS AND COMMUNICATION ENGINEERING EC334 - CONTROL SYSTEMS

ANNA UNIVERSITY :: CHENNAI MODEL QUESTION PAPER(V-SEMESTER) B.E. ELECTRONICS AND COMMUNICATION ENGINEERING EC334 - CONTROL SYSTEMS ANNA UNIVERSITY :: CHENNAI - 600 025 MODEL QUESTION PAPER(V-SEMESTER) B.E. ELECTRONICS AND COMMUNICATION ENGINEERING EC334 - CONTROL SYSTEMS Time: 3hrs Max Marks: 100 Answer all Questions PART - A (10

More information

Design on LVDT Displacement Sensor Based on AD598

Design on LVDT Displacement Sensor Based on AD598 Sensors & Transducers 2013 by IFSA http://www.sensorsportal.com Design on LDT Displacement Sensor Based on AD598 Ran LIU, Hui BU North China University of Water Resources and Electric Power, 450045, China

More information

The study on the woofer speaker characteristics due to design parameters

The study on the woofer speaker characteristics due to design parameters The study on the woofer speaker characteristics due to design parameters Byoung-sam Kim 1 ; Jin-young Park 2 ; Xu Yang 3 ; Tae-keun Lee 4 ; Hongtu Sun 5 1 Wonkwang University, South Korea 2 Wonkwang University,

More information

Servo Tuning. Dr. Rohan Munasinghe Department. of Electronic and Telecommunication Engineering University of Moratuwa. Thanks to Dr.

Servo Tuning. Dr. Rohan Munasinghe Department. of Electronic and Telecommunication Engineering University of Moratuwa. Thanks to Dr. Servo Tuning Dr. Rohan Munasinghe Department. of Electronic and Telecommunication Engineering University of Moratuwa Thanks to Dr. Jacob Tal Overview Closed Loop Motion Control System Brain Brain Muscle

More information

Upgrading from Stepper to Servo

Upgrading from Stepper to Servo Upgrading from Stepper to Servo Switching to Servos Provides Benefits, Here s How to Reduce the Cost and Challenges Byline: Scott Carlberg, Motion Product Marketing Manager, Yaskawa America, Inc. The customers

More information

International Journal of Scientific & Engineering Research, Volume 5, Issue 6, June ISSN

International Journal of Scientific & Engineering Research, Volume 5, Issue 6, June ISSN International Journal of Scientific & Engineering Research, Volume 5, Issue 6, June-2014 64 Voltage Regulation of Buck Boost Converter Using Non Linear Current Control 1 D.Pazhanivelrajan, M.E. Power Electronics

More information

MODELLING AND CHATTER CONTROL IN MILLING

MODELLING AND CHATTER CONTROL IN MILLING MODELLING AND CHATTER CONTROL IN MILLING Ashwini Shanthi.A, P. Chaitanya Krishna Chowdary, A.Neeraja, N.Nagabhushana Ramesh Dept. of Mech. Engg Anurag Group of Institutions (Formerly C V S R College of

More information

IMPLEMENTATION OF NEURAL NETWORK IN ENERGY SAVING OF INDUCTION MOTOR DRIVES WITH INDIRECT VECTOR CONTROL

IMPLEMENTATION OF NEURAL NETWORK IN ENERGY SAVING OF INDUCTION MOTOR DRIVES WITH INDIRECT VECTOR CONTROL IMPLEMENTATION OF NEURAL NETWORK IN ENERGY SAVING OF INDUCTION MOTOR DRIVES WITH INDIRECT VECTOR CONTROL * A. K. Sharma, ** R. A. Gupta, and *** Laxmi Srivastava * Department of Electrical Engineering,

More information

Non-Collocation Problems in Dynamics and Control of Mechanical Systems

Non-Collocation Problems in Dynamics and Control of Mechanical Systems Cleveland State University EngagedScholarship@CSU ETD Archive 2009 Non-Collocation Problems in Dynamics and Control of Mechanical Systems Timothy M. Obrzut Cleveland State University How does access to

More information

SYNCHRONOUS MACHINES

SYNCHRONOUS MACHINES SYNCHRONOUS MACHINES The geometry of a synchronous machine is quite similar to that of the induction machine. The stator core and windings of a three-phase synchronous machine are practically identical

More information

A Machine Tool Controller using Cascaded Servo Loops and Multiple Feedback Sensors per Axis

A Machine Tool Controller using Cascaded Servo Loops and Multiple Feedback Sensors per Axis A Machine Tool Controller using Cascaded Servo Loops and Multiple Sensors per Axis David J. Hopkins, Timm A. Wulff, George F. Weinert Lawrence Livermore National Laboratory 7000 East Ave, L-792, Livermore,

More information

TABLE OF CONTENTS CHAPTER TITLE PAGE DECLARATION DEDICATION ACKNOWLEDGEMENT ABSTRACT ABSTRAK

TABLE OF CONTENTS CHAPTER TITLE PAGE DECLARATION DEDICATION ACKNOWLEDGEMENT ABSTRACT ABSTRAK vii TABLES OF CONTENTS CHAPTER TITLE PAGE DECLARATION DEDICATION ACKNOWLEDGEMENT ABSTRACT ABSTRAK TABLE OF CONTENTS LIST OF TABLES LIST OF FIGURES LIST OF ABREVIATIONS LIST OF SYMBOLS LIST OF APPENDICES

More information

A comprehensive test system for precision transmission performance of CORT reducer

A comprehensive test system for precision transmission performance of CORT reducer Applied Mechanics and Materials Online: 2013-07-15 ISSN: 1662-7482, Vols. 333-335, pp 2448-2451 doi:10.4028/www.scientific.net/amm.333-335.2448 2013 Trans Tech Publications, Switzerland A comprehensive

More information

Application Note #2442

Application Note #2442 Application Note #2442 Tuning with PL and PID Most closed-loop servo systems are able to achieve satisfactory tuning with the basic Proportional, Integral, and Derivative (PID) tuning parameters. However,

More information

Reduction of Torque Ripple in Trapezoidal PMSM using Multilevel Inverter

Reduction of Torque Ripple in Trapezoidal PMSM using Multilevel Inverter Reduction of Torque Ripple in Trapezoidal PMSM using Multilevel Inverter R.Ravichandran 1, S.Sivaranjani 2 P.G Student [PSE], Dept. of EEE, V.S.B. Engineering College, Karur, Tamilnadu, India 1 Assistant

More information

UNIT II MEASUREMENT OF POWER & ENERGY

UNIT II MEASUREMENT OF POWER & ENERGY UNIT II MEASUREMENT OF POWER & ENERGY Dynamometer type wattmeter works on a very simple principle which is stated as "when any current carrying conductor is placed inside a magnetic field, it experiences

More information

Harmonic Stability in Renewable Energy Systems: An Overview

Harmonic Stability in Renewable Energy Systems: An Overview Harmonic Stability in Renewable Energy Systems: An Overview Frede Blaabjerg and Xiongfei Wang Department of Energy Technology Aalborg University, Denmark fbl@et.aau.dk, xwa@et.aau.dk Outline Introduction

More information

A New AC Servo Motor Load Disturbance Method

A New AC Servo Motor Load Disturbance Method , pp.313-317 http://dx.doi.org/10.14257/astl.2016. A New AC Servo Motor Load Disturbance Method Xiao Qianjun 1 and Zhang Xiaoqin 1, 1 Chongqing Industry Polytechnic College, Chongqing 401120, China Abstract.

More information

Figure 2.1 a. Block diagram representation of a system; b. block diagram representation of an interconnection of subsystems

Figure 2.1 a. Block diagram representation of a system; b. block diagram representation of an interconnection of subsystems 1 Figure 2.1 a. Block diagram representation of a system; b. block diagram representation of an interconnection of subsystems 2 Table 2.1 Laplace transform table 3 Table 2.2 Laplace transform theorems

More information

Load Observer and Tuning Basics

Load Observer and Tuning Basics Load Observer and Tuning Basics Feature Use & Benefits Mark Zessin Motion Solution Architect Rockwell Automation PUBLIC INFORMATION Rev 5058-CO900E Questions Addressed Why is Motion System Tuning Necessary?

More information

Analysis of Voltage Source Inverters using Space Vector PWM for Induction Motor Drive

Analysis of Voltage Source Inverters using Space Vector PWM for Induction Motor Drive IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) ISSN: 2278-1676 Volume 2, Issue 6 (Sep-Oct. 2012), PP 14-19 Analysis of Voltage Source Inverters using Space Vector PWM for Induction

More information

Design and Implementation of PID Controller for a two Quadrant Chopper Fed DC Motor Drive

Design and Implementation of PID Controller for a two Quadrant Chopper Fed DC Motor Drive Research Article International Journal of Current Engineering and Technology ISSN 0 0 INPRESSCO. All Rights Reserved. Available at http://inpressco.com/category/ijcet Design and Implementation of PID Controller

More information

SPEED CONTROL OF PERMANENT MAGNET SYNCHRONOUS MOTOR USING VOLTAGE SOURCE INVERTER

SPEED CONTROL OF PERMANENT MAGNET SYNCHRONOUS MOTOR USING VOLTAGE SOURCE INVERTER SPEED CONTROL OF PERMANENT MAGNET SYNCHRONOUS MOTOR USING VOLTAGE SOURCE INVERTER Kushal Rajak 1, Rajendra Murmu 2 1,2 Department of Electrical Engineering, B I T Sindri, (India) ABSTRACT This paper presents

More information

Modeling and Simulation Analysis of Eleven Phase Brushless DC Motor

Modeling and Simulation Analysis of Eleven Phase Brushless DC Motor Modeling and Simulation Analysis of Eleven Phase Brushless DC Motor Priyanka C P 1,Sija Gopinathan 2, Anish Gopinath 3 M. Tech Student, Department of EEE, Mar Athanasius College of Engineering, Kothamangalam,

More information

the pilot valve effect of

the pilot valve effect of Actiive Feedback Control and Shunt Damping Example 3.2: A servomechanism incorporating a hydraulic relay with displacement feedback throughh a dashpot and spring assembly is shown below. [Control System

More information

METHODS TO IMPROVE DYNAMIC RESPONSE OF POWER FACTOR PREREGULATORS: AN OVERVIEW

METHODS TO IMPROVE DYNAMIC RESPONSE OF POWER FACTOR PREREGULATORS: AN OVERVIEW METHODS TO IMPROE DYNAMIC RESPONSE OF POWER FACTOR PREREGULATORS: AN OERIEW G. Spiazzi*, P. Mattavelli**, L. Rossetto** *Dept. of Electronics and Informatics, **Dept. of Electrical Engineering University

More information

Velocity and Acceleration Measurements

Velocity and Acceleration Measurements Lecture (8) Velocity and Acceleration Measurements Prof. Kasim M. Al-Aubidy Philadelphia University-Jordan AMSS-MSc Prof. Kasim Al-Aubidy 1 Introduction: The measure of velocity depends on the scale of

More information

Digital Control of MS-150 Modular Position Servo System

Digital Control of MS-150 Modular Position Servo System IEEE NECEC Nov. 8, 2007 St. John's NL 1 Digital Control of MS-150 Modular Position Servo System Farid Arvani, Syeda N. Ferdaus, M. Tariq Iqbal Faculty of Engineering, Memorial University of Newfoundland

More information

CONTROLLER DESIGN ON ARX MODEL OF ELECTRO-HYDRAULIC ACTUATOR

CONTROLLER DESIGN ON ARX MODEL OF ELECTRO-HYDRAULIC ACTUATOR Journal of Fundamental and Applied Sciences ISSN 1112-9867 Research Article Special Issue Available online at http://www.jfas.info MODELING AND CONTROLLER DESIGN ON ARX MODEL OF ELECTRO-HYDRAULIC ACTUATOR

More information

ON THE PERFORMANCE OF LINEAR AND ROTARY SERVO MOTORS IN SUB MICROMETRIC ACCURACY POSITIONING SYSTEMS

ON THE PERFORMANCE OF LINEAR AND ROTARY SERVO MOTORS IN SUB MICROMETRIC ACCURACY POSITIONING SYSTEMS ON THE PERFORMANCE OF LINEAR AND ROTARY SERVO MOTORS IN SUB MICROMETRIC ACCURACY POSITIONING SYSTEMS Gilva Altair Rossi de Jesus, gilva@demec.ufmg.br Department of Mechanical Engineering, Federal University

More information

Engineering Reference

Engineering Reference Engineering Reference Linear & Rotary Positioning Stages Table of Contents 1. Linear Positioning Stages...269 1.1 Precision Linear Angular Dynamic 1.2 Loading Accuracy Repeatability Resolution Straightness

More information

Principles of Active Vibration Control: Basics of active vibration control methods

Principles of Active Vibration Control: Basics of active vibration control methods Principles of Active Vibration Control: Basics of active vibration control methods INTRODUCTION Vibration control is aimed at reducing or modifying the vibration level of a mechanical structure. Contrary

More information

Module 1. Introduction. Version 2 EE IIT, Kharagpur

Module 1. Introduction. Version 2 EE IIT, Kharagpur Module 1 Introduction Lesson 1 Introducing the Course on Basic Electrical Contents 1 Introducing the course (Lesson-1) 4 Introduction... 4 Module-1 Introduction... 4 Module-2 D.C. circuits.. 4 Module-3

More information

Response spectrum Time history Power Spectral Density, PSD

Response spectrum Time history Power Spectral Density, PSD A description is given of one way to implement an earthquake test where the test severities are specified by time histories. The test is done by using a biaxial computer aided servohydraulic test rig.

More information

Performance evaluation of fractional-slot tubular permanent magnet machines with low space harmonics

Performance evaluation of fractional-slot tubular permanent magnet machines with low space harmonics ARCHIVES OF ELECTRICAL ENGINEERING DOI 10.1515/aee-2015-0049 VOL. 64(4), pp. 655-668 (2015) Performance evaluation of fractional-slot tubular permanent magnet machines with low space harmonics Jiabin Wang

More information

Parameter tuning and experimental results of power system stabilizer

Parameter tuning and experimental results of power system stabilizer Louisiana State University LSU Digital Commons LSU Master's Theses Graduate School 2011 Parameter tuning and experimental results of power system stabilizer Bixiang Tang Louisiana State University and

More information

Effect of Controller Parameters on Pantograph-Catenary System

Effect of Controller Parameters on Pantograph-Catenary System American International Journal of Research in Science, Technology, Engineering & Mathematics Available online at http://www.iasir.net ISSN (Print): 2328-3491, ISSN (Online): 2328-358, ISSN (CD-ROM): 2328-3629

More information

Chapter 2 Shunt Active Power Filter

Chapter 2 Shunt Active Power Filter Chapter 2 Shunt Active Power Filter In the recent years of development the requirement of harmonic and reactive power has developed, causing power quality problems. Many power electronic converters are

More information

User Guide IRMCS3041 System Overview/Guide. Aengus Murray. Table of Contents. Introduction

User Guide IRMCS3041 System Overview/Guide. Aengus Murray. Table of Contents. Introduction User Guide 0607 IRMCS3041 System Overview/Guide By Aengus Murray Table of Contents Introduction... 1 IRMCF341 Application Circuit... 2 Sensorless Control Algorithm... 4 Velocity and Current Control...

More information

1.What is frequency response? A frequency responses the steady state response of a system when the input to the system is a sinusoidal signal.

1.What is frequency response? A frequency responses the steady state response of a system when the input to the system is a sinusoidal signal. Control Systems (EC 334) 1.What is frequency response? A frequency responses the steady state response of a system when the input to the system is a sinusoidal signal. 2.List out the different frequency

More information

Placement Paper For Electrical

Placement Paper For Electrical Placement Paper For Electrical Q.1 The two windings of a transformer is (A) conductively linked. (B) inductively linked. (C) not linked at all. (D) electrically linked. Ans : B Q.2 A salient pole synchronous

More information

Estimation of Core Losses in an Induction Motor under PWM Voltage Excitations Using Core Loss Curves Tested by Epstein Specimens

Estimation of Core Losses in an Induction Motor under PWM Voltage Excitations Using Core Loss Curves Tested by Epstein Specimens International Forum on Systems and Mechatronics, 7 Estimation of Core Losses in an Induction Motor under PWM Voltage Excitations Using Core Loss Curves Tested by Epstein Specimens Wen-Chang Tsai Department

More information

ISSUES OF SYSTEM AND CONTROL INTERACTIONS IN ELECTRIC POWER SYSTEMS

ISSUES OF SYSTEM AND CONTROL INTERACTIONS IN ELECTRIC POWER SYSTEMS ISSUES OF SYSTEM AND CONTROL INTERACTIONS IN ELECTRIC POWER SYSTEMS INDO-US Workshop October 2009, I.I.T. Kanpur INTRODUCTION Electric Power Systems are very large, spread over a wide geographical area

More information

Development of Variable Speed Drive for Single Phase Induction Motor Based on Frequency Control

Development of Variable Speed Drive for Single Phase Induction Motor Based on Frequency Control Development of Variable Speed Drive for Single Phase Induction Motor Based on Frequency Control W.I.Ibrahim, R.M.T.Raja Ismail,M.R.Ghazali Faculty of Electrical & Electronics Engineering Universiti Malaysia

More information

Electro-hydraulic Servo Valve Systems

Electro-hydraulic Servo Valve Systems Fluidsys Training Centre, Bangalore offers an extensive range of skill-based and industry-relevant courses in the field of Pneumatics and Hydraulics. For more details, please visit the website: https://fluidsys.org

More information

Introduction. ELCT903, Sensor Technology Electronics and Electrical Engineering Department 1. Dr.-Eng. Hisham El-Sherif

Introduction. ELCT903, Sensor Technology Electronics and Electrical Engineering Department 1. Dr.-Eng. Hisham El-Sherif Introduction In automation industry every mechatronic system has some sensors to measure the status of the process variables. The analogy between the human controlled system and a computer controlled system

More information

DESIGN AND ANALYSIS OF LOW POWER CHARGE PUMP CIRCUIT FOR PHASE-LOCKED LOOP

DESIGN AND ANALYSIS OF LOW POWER CHARGE PUMP CIRCUIT FOR PHASE-LOCKED LOOP DESIGN AND ANALYSIS OF LOW POWER CHARGE PUMP CIRCUIT FOR PHASE-LOCKED LOOP 1 B. Praveen Kumar, 2 G.Rajarajeshwari, 3 J.Anu Infancia 1, 2, 3 PG students / ECE, SNS College of Technology, Coimbatore, (India)

More information

Servo DC Motor Position Control Based on Sliding Mode Approach

Servo DC Motor Position Control Based on Sliding Mode Approach Servo DC Motor Position Control Based on Sliding Mode Approach Ahmed. M. Kassem * and Ali M. Yousef ** * Control Technology Dep., Bini-Swief University, Egypt ** Electrical Dept., Assiut University, Egypt

More information

Alternating Current. Slide 2 / 69. Slide 1 / 69. Slide 3 / 69. Slide 4 / 69. Slide 6 / 69. Slide 5 / 69. Topics to be covered

Alternating Current. Slide 2 / 69. Slide 1 / 69. Slide 3 / 69. Slide 4 / 69. Slide 6 / 69. Slide 5 / 69. Topics to be covered Slide 1 / 69 lternating urrent Sources of alternating EMF ircuits and Impedance Slide 2 / 69 Topics to be covered LR Series ircuits Resonance in ircuit Oscillations Slide 3 / 69 Sources of lternating EMF

More information

ADVANCED DC-DC CONVERTER CONTROLLED SPEED REGULATION OF INDUCTION MOTOR USING PI CONTROLLER

ADVANCED DC-DC CONVERTER CONTROLLED SPEED REGULATION OF INDUCTION MOTOR USING PI CONTROLLER Asian Journal of Electrical Sciences (AJES) Vol.2.No.1 2014 pp 16-21. available at: www.goniv.com Paper Received :08-03-2014 Paper Accepted:22-03-2013 Paper Reviewed by: 1. R. Venkatakrishnan 2. R. Marimuthu

More information

SENSORLESS current mode (SCM) control was demonstrated

SENSORLESS current mode (SCM) control was demonstrated 1154 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 21, NO. 4, JULY 2006 Hysteresis and Delta Modulation Control of Converters Using Sensorless Current Mode Jonathan W. Kimball, Senior Member, IEEE, Philip

More information

Analysis and Suppression of Torsional Vibrations for the Permanent Magnet Synchronous Motor-Load System

Analysis and Suppression of Torsional Vibrations for the Permanent Magnet Synchronous Motor-Load System Proceedings of the 2009 IEEE International Conference on Systems, Man, and Cybernetics San Antonio, TX, USA - October 2009 Analysis and Suppression of Torsional Vibrations for the Permanent Magnet Synchronous

More information

International Journal of Research in Advent Technology Available Online at:

International Journal of Research in Advent Technology Available Online at: OVERVIEW OF DIFFERENT APPROACHES OF PID CONTROLLER TUNING Manju Kurien 1, Alka Prayagkar 2, Vaishali Rajeshirke 3 1 IS Department 2 IE Department 3 EV DEpartment VES Polytechnic, Chembur,Mumbai 1 manjulibu@gmail.com

More information

Electromagnetic Vibration Energy Harvesting for Railway Applications

Electromagnetic Vibration Energy Harvesting for Railway Applications Electromagnetic Vibration Energy Harvesting for Railway Applications. Bradai 1,2*,. aifar 1,2, C. Viehweger 1, O. Kanoun 1 1 Dept. of Electrical Engineering and Information Technology, Technische Universität

More information

Estimation of State Variables of Active Suspension System using Kalman Filter

Estimation of State Variables of Active Suspension System using Kalman Filter International Journal of Current Engineering and Technology E-ISSN 2277 416, P-ISSN 2347 5161 217 INPRESSCO, All Rights Reserved Available at http://inpressco.com/category/ijcet Research Article Estimation

More information

MEM01: DC-Motor Servomechanism

MEM01: DC-Motor Servomechanism MEM01: DC-Motor Servomechanism Interdisciplinary Automatic Controls Laboratory - ME/ECE/CHE 389 February 5, 2016 Contents 1 Introduction and Goals 1 2 Description 2 3 Modeling 2 4 Lab Objective 5 5 Model

More information

Putting a damper on resonance

Putting a damper on resonance TAMING THE Putting a damper on resonance Advanced control methods guarantee stable operation of grid-connected low-voltage converters SAMI PETTERSSON Resonant-type filters are used as supply filters in

More information

/$ IEEE

/$ IEEE IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II: EXPRESS BRIEFS, VOL. 55, NO. 10, OCTOBER 2008 1061 UPS Parallel Balanced Operation Without Explicit Estimation of Reactive Power A Simpler Scheme Edgar Campos

More information

COVENANT UNIVERSITY NIGERIA TUTORIAL KIT OMEGA SEMESTER PROGRAMME: MECHANICAL ENGINEERING

COVENANT UNIVERSITY NIGERIA TUTORIAL KIT OMEGA SEMESTER PROGRAMME: MECHANICAL ENGINEERING COVENANT UNIVERSITY NIGERIA TUTORIAL KIT OMEGA SEMESTER PROGRAMME: MECHANICAL ENGINEERING COURSE: MCE 527 DISCLAIMER The contents of this document are intended for practice and leaning purposes at the

More information

Teaching Of Self Excited Induction Generator For Standalone Wind Energy Conversation System Using MATLAB GUI

Teaching Of Self Excited Induction Generator For Standalone Wind Energy Conversation System Using MATLAB GUI RESEARCH ARTICLE OPEN ACCESS Teaching Of Self Excited Induction Generator For Standalone Wind Energy Conversation System Using MATLAB GUI Vinay Kumar Sahu Electrical dept. Madhav Institute of Technology

More information

Generator Advanced Concepts

Generator Advanced Concepts Generator Advanced Concepts Common Topics, The Practical Side Machine Output Voltage Equation Pitch Harmonics Circulating Currents when Paralleling Reactances and Time Constants Three Generator Curves

More information

ADVANCED CONTROL TECHNIQUES IN VARIABLE SPEED STAND ALONE WIND TURBINE SYSTEM

ADVANCED CONTROL TECHNIQUES IN VARIABLE SPEED STAND ALONE WIND TURBINE SYSTEM ADVANCED CONTROL TECHNIQUES IN VARIABLE SPEED STAND ALONE WIND TURBINE SYSTEM V. Sharmila Deve and S. Karthiga Department of Electrical and Electronics Engineering Kumaraguru College of Technology, Coimbatore,

More information

All Servos are NOT Created Equal

All Servos are NOT Created Equal All Servos are NOT Created Equal Important Features that you Cannot Afford to Ignore when Comparing Servos Michael Miller and Jerry Tyson, Regional Motion Engineering Yaskawa America, Inc. There is a common

More information

Tuning Methods of PID Controller for DC Motor Speed Control

Tuning Methods of PID Controller for DC Motor Speed Control Indonesian Journal of Electrical Engineering and Computer Science Vol. 3, No. 2, August 2016, pp. 343 ~ 349 DOI: 10.11591/ijeecs.v3.i2.pp343-349 343 Tuning Methods of PID Controller for DC Motor Speed

More information

Vibratory Feeder Bowl Analysis

Vibratory Feeder Bowl Analysis The Journal of Undergraduate Research Volume 7 Journal of Undergraduate Research, Volume 7: 2009 Article 7 2009 Vibratory Feeder Bowl Analysis Chris Green South Dakota State University Jeff Kreul South

More information

Resonant characteristics of flow pulsation in pipes due to swept sine constraint

Resonant characteristics of flow pulsation in pipes due to swept sine constraint TRANSACTIONS OF THE INSTITUTE OF FLUID-FLOW MACHINERY No. 133, 2016, 131 144 Tomasz Pałczyński Resonant characteristics of flow pulsation in pipes due to swept sine constraint Institute of Turbomachinery,

More information

Smooth rotation. An adaptive algorithm kills jerky motions in motors.

Smooth rotation. An adaptive algorithm kills jerky motions in motors. Page 1 of 4 Copyright 2004 Penton Media, Inc., All rights reserved. Printing of this document is for personal use only. For reprints of this or other articles, click here Smooth rotation An adaptive algorithm

More information

IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 14, NO. 3, MAY A Sliding Mode Current Control Scheme for PWM Brushless DC Motor Drives

IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 14, NO. 3, MAY A Sliding Mode Current Control Scheme for PWM Brushless DC Motor Drives IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 14, NO. 3, MAY 1999 541 A Sliding Mode Current Control Scheme for PWM Brushless DC Motor Drives Jessen Chen and Pei-Chong Tang Abstract This paper proposes

More information

DEEP FLAW DETECTION WITH GIANT MAGNETORESISTIVE (GMR) BASED SELF-NULLING PROBE

DEEP FLAW DETECTION WITH GIANT MAGNETORESISTIVE (GMR) BASED SELF-NULLING PROBE DEEP FLAW DETECTION WITH GIANT MAGNETORESISTIVE (GMR) BASED SELF-NULLING PROBE Buzz Wincheski and Min Namkung NASA Langley Research Center Hampton, VA 23681 INTRODUCTION The use of giant magnetoresistive

More information

Module 7 : Design of Machine Foundations. Lecture 31 : Basics of soil dynamics [ Section 31.1: Introduction ]

Module 7 : Design of Machine Foundations. Lecture 31 : Basics of soil dynamics [ Section 31.1: Introduction ] Lecture 31 : Basics of soil dynamics [ Section 31.1: Introduction ] Objectives In this section you will learn the following Dynamic loads Degrees of freedom Lecture 31 : Basics of soil dynamics [ Section

More information

Advanced Digital Motion Control Using SERCOS-based Torque Drives

Advanced Digital Motion Control Using SERCOS-based Torque Drives Advanced Digital Motion Using SERCOS-based Torque Drives Ying-Yu Tzou, Andes Yang, Cheng-Chang Hsieh, and Po-Ching Chen Power Electronics & Motion Lab. Dept. of Electrical and Engineering National Chiao

More information

A COMPARISON STUDY OF THE COMMUTATION METHODS FOR THE THREE-PHASE PERMANENT MAGNET BRUSHLESS DC MOTOR

A COMPARISON STUDY OF THE COMMUTATION METHODS FOR THE THREE-PHASE PERMANENT MAGNET BRUSHLESS DC MOTOR A COMPARISON STUDY OF THE COMMUTATION METHODS FOR THE THREE-PHASE PERMANENT MAGNET BRUSHLESS DC MOTOR Shiyoung Lee, Ph.D. Pennsylvania State University Berks Campus Room 120 Luerssen Building, Tulpehocken

More information

2DOF H infinity Control for DC Motor Using Genetic Algorithms

2DOF H infinity Control for DC Motor Using Genetic Algorithms , March 12-14, 214, Hong Kong 2DOF H infinity Control for DC Motor Using Genetic Algorithms Natchanon Chitsanga and Somyot Kaitwanidvilai Abstract This paper presents a new method of 2DOF H infinity Control

More information

Lecture 9. Lab 16 System Identification (2 nd or 2 sessions) Lab 17 Proportional Control

Lecture 9. Lab 16 System Identification (2 nd or 2 sessions) Lab 17 Proportional Control 246 Lecture 9 Coming week labs: Lab 16 System Identification (2 nd or 2 sessions) Lab 17 Proportional Control Today: Systems topics System identification (ala ME4232) Time domain Frequency domain Proportional

More information

high, thin-walled buildings in glass and steel

high, thin-walled buildings in glass and steel a StaBle MiCroSCoPe image in any BUildiNG: HUMMINGBIRd 2.0 Low-frequency building vibrations can cause unacceptable image quality loss in microsurgery microscopes. The Hummingbird platform, developed earlier

More information

Simulation and Performance Evaluation of Closed Loop Pi and Pid Controlled Sepic Converter Systems

Simulation and Performance Evaluation of Closed Loop Pi and Pid Controlled Sepic Converter Systems Simulation and Performance Evaluation of Closed Loop Pi and Pid Controlled Sepic Converter Systems Simulation and Performance Evaluation of Closed Loop Pi and Pid Controlled Sepic Converter Systems T.

More information

Detecting and Preventing Instabilities in Plasma Processes

Detecting and Preventing Instabilities in Plasma Processes Detecting and Preventing Instabilities in Plasma Processes D.C. Carter and V.L. Brouk, Advanced Energy Industries, Inc., Fort Collins, CO ABSTRACT RF driven plasmas commonly used in enhanced CVD deposition

More information

Comparative study of PID and Fuzzy tuned PID controller for speed control of DC motor

Comparative study of PID and Fuzzy tuned PID controller for speed control of DC motor Comparative study of PID and Fuzzy tuned PID controller for speed control of DC motor Mohammed Shoeb Mohiuddin Assistant Professor, Department of Electrical Engineering Mewar University, Chittorgarh, Rajasthan,

More information

Cohen-coon PID Tuning Method; A Better Option to Ziegler Nichols-PID Tuning Method

Cohen-coon PID Tuning Method; A Better Option to Ziegler Nichols-PID Tuning Method Cohen-coon PID Tuning Method; A Better Option to Ziegler Nichols-PID Tuning Method Engr. Joseph, E. A. 1, Olaiya O. O. 2 1 Electrical Engineering Department, the Federal Polytechnic, Ilaro, Ogun State,

More information

3rd International Conference on Machinery, Materials and Information Technology Applications (ICMMITA 2015)

3rd International Conference on Machinery, Materials and Information Technology Applications (ICMMITA 2015) 3rd International Conference on Machinery, Materials and Information echnology Applications (ICMMIA 015) he processing of background noise in secondary path identification of Power transformer ANC system

More information

SPEED is one of the quantities to be measured in many

SPEED is one of the quantities to be measured in many 776 IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, VOL. 47, NO. 3, JUNE 1998 A Novel Low-Cost Noncontact Resistive Potentiometric Sensor for the Measurement of Low Speeds Xiujun Li and Gerard C.

More information

The VIRGO suspensions

The VIRGO suspensions INSTITUTE OF PHYSICSPUBLISHING Class. Quantum Grav. 19 (2002) 1623 1629 CLASSICAL ANDQUANTUM GRAVITY PII: S0264-9381(02)30082-0 The VIRGO suspensions The VIRGO Collaboration (presented by S Braccini) INFN,

More information

A study of Vibration Analysis for Gearbox Casing Using Finite Element Analysis

A study of Vibration Analysis for Gearbox Casing Using Finite Element Analysis A study of Vibration Analysis for Gearbox Casing Using Finite Element Analysis M. Sofian D. Hazry K. Saifullah M. Tasyrif K.Salleh I.Ishak Autonomous System and Machine Vision Laboratory, School of Mechatronic,

More information