Module 4 TEST SYSTEM Part 2. SHAKING TABLE CONTROLLER ASSOCIATED SOFTWARES Dr. J.C. QUEVAL, CEA/Saclay
|
|
- Brenda Chandler
- 5 years ago
- Views:
Transcription
1 Module 4 TEST SYSTEM Part 2 SHAKING TABLE CONTROLLER ASSOCIATED SOFTWARES Dr. J.C. QUEVAL, CEA/Saclay DEN/DM2S/SEMT/EMSI 11/03/2010 1
2 2 Electronic command Basic closed loop control The basic closed loop control system is composed by: - an amplificator for the command of the servo valve or servo controller, - a feedback signal from a LVDT, - Peripheral material to measure the position of the piston 11/03/2010 2
3 3 Inner and outer loop control Seismic systems operating with massive and heavy specimens generally require large hydraulic flow to provide the system performance characteristics required for seismic testing. The control circuit used for the servo-valve includes an inner loop for the control of the spool position and an outer loop similarly to the closed loop discussed earlier. 11/03/2010 3
4 4 Three variable servo control The idea for the three variable control (TVC) evolved from the realization that one control command and feedback is not adequate for flat performance over a broad-frequency range. The TVC system combines information from all three signals, emphasizing displacement at low range frequencies, velocity at middle-range frequencies, and acceleration at high range frequencies. 11/03/2010 4
5 5 Reference generator functional 11/03/2010 5
6 6 Degree of freedom control The preceding paragraphs explained basic control loops, inner and outer loop control and three variable control for a simple test facility using only one actuator. For large test facilities, there are several axes of excitation and also several actuators in the same degree of freedom. In these cases it is necessary to use the concept of Degree of freedom Control (DOF). 11/03/2010 6
7 7 Compensation techniques To improve the fidelity of the system performance compensation and stabilization techniques are used specially: - force balance compensation, - overturning moment compensation, - off center loading compensation, - differential pressure stabilization, - velocity lead compensation, - acceleration lead compensation 11/03/2010 7
8 8 Force balance compensation When the number of actuator exceeds the controllable degrees of freedom, small calibration errors of table position can cause large internal table forces to be generated by the actuators. A very small imbalance can lend a very large force due to the high stiffness of the table. To compensate for this effect, the Force balance compensation system assures that the forces are balances on all the driving actuators. 11/03/2010 8
9 9 Overturning moment compensation and off center loading compensation A source of potential instability in control system is an overturning moment induced by the specimen especially for specimen with a high center of gravity. This is corrected by introducing appropriate force signals from horizontal motion controller into the appropriate angular controller. Cross coupling compensation To obtain motion in a single translational axis the actuators in the two orthogonal axes must undergo a displacement to correct the motion from an arc to a straight line motion 11/03/2010 9
10 10 Other Miscellaneous Stabilization compensation techniques There are three other types of compensation that are commonly used in simulators to improve the fidelity of the system performance. These three compensations may be used when specimen resonances result in feedback signals out of phase with the normal control loop. These compensations are: - differential pressure compensation, - velocity lead stabilization, - acceleration lead stabilization. 11/03/
11 11 Other Miscellaneous Stabilization compensation techniques Differential pressure stabilization This technique is commonly used on hydraulic system to improve the fidelity of system. The function stabilize the extremely high frequencies encountered during seismic testing to provide more stable acceleration 11/03/
12 12 Other Miscellaneous Stabilization compensation techniques Velocity and acceleration lead terms In a seismic system, where there are large masses and high velocity and acceleration requirements, there is a maximum amount of gain that can be applied to the control loop and still ensure table stability. To enhance system response when it is not possible to apply more gain, the system contains velocity and acceleration lead terms. 11/03/
13 13 Additional soft-wares Additional Software Reference signal/spectrum drive Controller of the shaking table vitesse DCerror accelerometer table LVDT pressure accelerometer 11/03/
14 14 Open loop Input X(t) X(f) H Characterizes Shaker + plate + frame + specimen Output Y(t) Y(f) X(f) = Fourier of x(t) Y(f) = Fourier of y(t) (which must be equal to the reference) H is determined by pre-test X(f) = Y(f)/H X(t) is Fourier inverse function of X(f) 11/03/
15 15 Closed loop Input Output X(t) X(f) H Y(t) Y(f) Comparison with reference Error computation Aims: action on the input to take into account the variation of H Non linearity Hpretest H test Modification of the behaviour of the specimen Increase precision 11/03/
16 16 Problems to solve Generation of different types of signal Sine: frequency fixed Sine sweep Linear Logarithmic Step by step Random - Real - Pseudo Time-history and Shock - Time-history (time) [real accelerogramme, synthetic accelerogramme] -1/2 sine (or others) - from spectra -Determination of the transfer function H - By pre test (open loop) - Determination in closed loop Analyze of the feed-back signal - Sine: specified analyze - Random: Fourier analyze - Shock, time history or pulse: Fourier analyzes + shock spectrum Compensation algorithms - Determination of errors, - Percentage of compensation, - Speed of compensation. 11/03/
17 17 I-Pscn 11/03/
18 18 I-Pscn 11/03/
19 19 I-Pscn 11/03/
20 20 Sine sweep control - I-P sn 11/03/
21 21 Sine sweep control - I-P sn Definition of the type of speed Hz/s or oct/min ou decade/min Definition of the number de cycles Definition of the type of analyze for the control signal Control on the global signal(rms value, peek value, mean value) Control on the filtered signal Definition of the control strategy Control using one sensor as reference Control using the mean value of the response of several sensors Control on the minimum value, maximal value. Definition of the safety strategy Stop if over a given value on the reference sensor Stop if over a given value on one or several channels Definition of the analyze strategy number de lines for the curves, Acquisition duration, number of period in the block for the low frequencies Analyze frequency range sampling = 4 x frequency maxi 11/03/
22 22 Sine sweep control - I-P sn The software works using several samples. The control is in closed-loop but it is no really a real time control. At t0 : It sends a sinusoidal signal with a given frequency and an amplitude determined during the previous sample at t -1, During this excitation in open loop, it records the return signal taken as reference (with or without filter) It computes the rms value of the response recorded during the previous sample, It compares with the required level for the frequency, It determines the error and coefficient It determine the parameters, frequency and amplitude for the next sample starting at t +1 At t -1 it sends the next sample and continues the loop, 11/03/
23 23 Random excitation - I-Pan The principle of I-Pan is identical to the sine sweep software. The software works using several samples. The control is in closed-loop but it is no really a real time control. At t0 : It sends a random signal determined during the previous sample at t -1, During this excitation in open loop, it records the return signal taken as reference, It computes DSP of this sample, It compares with the required DSP, It determines the error and coefficients for all frequencies, It determine from the DSP a new excitation taking into all errors for the next sample starting at t +1 At t -1 it sends the next sample and continues the loop. The parameters are: Frequencies mini and maxi, number of lines (lines/oct ) or precision in frequency or duration of a sample, The level in g²/hz for the different point of the spectra, The abort levels, Duration of the stop and start. 11/03/
24 24 11/03/
25 25 11/03/
26 26 The bulk modulus (K) of a substance measures the substance's resistance to uniform compression. It is defined as the pressure increase needed to cause a given relative decrease in volume. The inverse of the bulk modulus gives a substance's compressibility. 11/03/
SHAKING TABLE. SHAKING TABLE Rev. 03/02/10
SHAKING TABLE SHAKING TABLE Rev. 03/02/10 HACER CLIC PARA INTRODUCIR EL TÍTULO 1. GENERAL 2. PERFORMANCE 3. SYSTEM SIZING 4. CONTROL SYSTEM 5. CONCLUSION 6. CONTACT 2 HACER CLIC PARA INTRODUCIR EL TÍTULO
More information(i) Sine sweep (ii) Sine beat (iii) Time history (iv) Continuous sine
A description is given of one way to implement an earthquake test where the test severities are specified by the sine-beat method. The test is done by using a biaxial computer aided servohydraulic test
More informationResponse 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 informationOmar E ROOD 1, Han-Sheng CHEN 2, Rodney L LARSON 3 And Richard F NOWAK 4 SUMMARY
DEVELOPMENT OF HIGH FLOW, HIGH PERFORMANCE HYDRAULIC SERVO VALVES AND CONTROL METHODOLOGIES IN SUPPORT OF FUTURE SUPER LARGE SCALE SHAKING TABLE FACILITIES Omar E ROOD 1, Han-Sheng CHEN 2, Rodney L LARSON
More informationMIL-STD-202G SHOCK (SPECIFIED PULSE)
SHOCK (SPECIFIED PULSE) 1. PURPOSE. This test is conducted for the purpose of determining the suitability of component parts and subassemblies of electrical and electronic components when subjected to
More informationControl Servo Design for Inverted Pendulum
JGW-T1402132-v2 Jan. 14, 2014 Control Servo Design for Inverted Pendulum Takanori Sekiguchi 1. Introduction In order to acquire and keep the lock of the interferometer, RMS displacement or velocity of
More informationSHOCK AND VIBRATION RESPONSE SPECTRA COURSE Unit 4. Random Vibration Characteristics. By Tom Irvine
SHOCK AND VIBRATION RESPONSE SPECTRA COURSE Unit 4. Random Vibration Characteristics By Tom Irvine Introduction Random Forcing Function and Response Consider a turbulent airflow passing over an aircraft
More informationActive Vibration Isolation of an Unbalanced Machine Tool Spindle
Active Vibration Isolation of an Unbalanced Machine Tool Spindle David. J. Hopkins, Paul Geraghty Lawrence Livermore National Laboratory 7000 East Ave, MS/L-792, Livermore, CA. 94550 Abstract Proper configurations
More informationDevelopments in vibrator control
Geophysical Prospecting, 2010, 58, 33 40 doi: 10.1111/j.1365-2478.2009.00848.x Developments in vibrator control D. Boucard and G. Ollivrin Sercel France, PO Box 439, 44474 Carquefou Cedex, France Received
More informationCHAPTER 6 INTRODUCTION TO SYSTEM IDENTIFICATION
CHAPTER 6 INTRODUCTION TO SYSTEM IDENTIFICATION Broadly speaking, system identification is the art and science of using measurements obtained from a system to characterize the system. The characterization
More informationVibration Transducer Calibration System
1 Overview UCON is designed for calibrating sensitivity, frequency response characteristic and amplitude linearity of acceleration transducer. There are three basic operation modes for the calibration
More informationUTILIZING MODERN DIGITAL SIGNAL PROCESSING FOR IMPROVEMENT OF LARGE SCALE SHAKING TABLE PERFORMANCE
UTILIZING MODERN DIGITAL SIGNAL PROCESSING FOR IMPROVEMENT OF LARGE SCALE SHAKING TABLE PERFORMANCE Richard F. NOWAK 1, David A. KUSNER 2, Rodney L. LARSON 3 And Bradford K. THOEN 4 SUMMARY The modern
More informationm+p VibControl Sine Vibration Control
www.mpihome.com m+p VibControl Sine Vibration Control m+p VibControl is m+p international s proven software for carrying out a wide variety of vibration tests. Its Sine control mode is one of the basic
More informationAN5E Application Note
Metra utilizes for factory calibration a modern PC based calibration system. The calibration procedure is based on a transfer standard which is regularly sent to Physikalisch-Technische Bundesanstalt (PTB)
More informationMULTIPLE INPUT MULTIPLE OUTPUT (MIMO) VIBRATION CONTROL SYSTEM
MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) VIBRATION CONTROL SYSTEM WWW.CRYSTALINSTRUMENTS.COM MIMO Vibration Control Overview MIMO Testing has gained a huge momentum in the past decade with the development
More informationAGN 008 Vibration DESCRIPTION. Cummins Generator Technologies manufacture ac generators (alternators) to ensure compliance with BS 5000, Part 3.
Application Guidance Notes: Technical Information from Cummins Generator Technologies AGN 008 Vibration DESCRIPTION Cummins Generator Technologies manufacture ac generators (alternators) to ensure compliance
More informationSHOCK RESPONSE SPECTRUM SYNTHESIS VIA DAMPED SINUSOIDS Revision B
SHOCK RESPONSE SPECTRUM SYNTHESIS VIA DAMPED SINUSOIDS Revision B By Tom Irvine Email: tomirvine@aol.com April 5, 2012 Introduction Mechanical shock can cause electronic components to fail. Crystal oscillators
More informationEarthquake Resistance Test Specifications for Communications Equipment
Earthquake Resistance Test Specifications for Communications Equipment (Edition: March 2018) NTT DOCOMO, INC. All rights reserved. TABLE OF CONTENTS 1. INTRODUCTION...1 2. EQUIPMENT TO BE TESTED...1 3.
More informationModeling and Control of Mold Oscillation
ANNUAL REPORT UIUC, August 8, Modeling and Control of Mold Oscillation Vivek Natarajan (Ph.D. Student), Joseph Bentsman Department of Mechanical Science and Engineering University of Illinois at UrbanaChampaign
More informationMATHEMATICAL MODEL VALIDATION
CHAPTER 5: VALIDATION OF MATHEMATICAL MODEL 5-1 MATHEMATICAL MODEL VALIDATION 5.1 Preamble 5-2 5.2 Basic strut model validation 5-2 5.2.1 Passive characteristics 5-3 5.2.2 Workspace tests 5-3 5.3 SDOF
More informationDEPARTMENT OF DEFENSE TEST METHOD STANDARD METHOD 213, SHOCK (SPECIFIED PULSE)
INCH-POUND MIL-STD-202-213 18 April 2015 SUPERSEDING MIL-STD-202G w/change 2 (IN PART) 28 June 2013 (see 6.1) DEPARTMENT OF DEFENSE TEST METHOD STANDARD METHOD 213, SHOCK (SPECIFIED PULSE) AMSC N/A FSC
More informationAnthony Chu. Basic Accelerometer types There are two classes of accelerometer in general: AC-response DC-response
Engineer s Circle Choosing the Right Type of Accelerometers Anthony Chu As with most engineering activities, choosing the right tool may have serious implications on the measurement results. The information
More informationSummary. Seismic vibrators are the preferred sources for land seismic ( ) (1) Unfortunately, due to the mechanical and
Timothy Dean*, John Quigley, Scott MacDonald, and Colin Readman, WesternGeco. Summary Seismic vibrators are the preferred sources for land seismic surveys. Unfortunately, due to the mechanical and hydraulic
More informationModule 2: Lecture 4 Flight Control System
26 Guidance of Missiles/NPTEL/2012/D.Ghose Module 2: Lecture 4 Flight Control System eywords. Roll, Pitch, Yaw, Lateral Autopilot, Roll Autopilot, Gain Scheduling 3.2 Flight Control System The flight control
More information5. Transducers Definition and General Concept of Transducer Classification of Transducers
5.1. Definition and General Concept of Definition The transducer is a device which converts one form of energy into another form. Examples: Mechanical transducer and Electrical transducer Electrical A
More informationTactical grade MEMS accelerometer
Tactical grade MEMS accelerometer S.Gonseth 1, R.Brisson 1, D Balmain 1, M. Di-Gisi 1 1 SAFRAN COLIBRYS SA Av. des Sciences 13 1400 Yverdons-les-Bains Switzerland Inertial Sensors and Systems 2017 Karlsruhe,
More informationReal Time Hybrid Seismic Test System User s Manual. State University of New York at Buffalo (SUNY) US EQT
Real Time Hybrid Seismic Test System User s Manual l State University of New York at Buffalo (SUNY) US1.17858.EQT Copyright information Contact information Publication information 2003 MTS Systems Corporation.
More informationHow to implement SRS test without data measured?
How to implement SRS test without data measured? --according to MIL-STD-810G method 516.6 procedure I Purpose of Shock Test Shock tests are performed to: a. provide a degree of confidence that materiel
More informationSHAKER TABLE SEISMIC TESTING OF EQUIPMENT USING HISTORICAL STRONG MOTION DATA SCALED TO SATISFY A SHOCK RESPONSE SPECTRUM
SHAKER TABLE SEISMIC TESTING OF EQUIPMENT USING HISTORICAL STRONG MOTION DATA SCALED TO SATISFY A SHOCK RESPONSE SPECTRUM By Tom Irvine Email: tomirvine@aol.com May 6, 29. The purpose of this paper is
More informationEIA STANDARD TP-27B. Mechanical Shock (Specified Pulse) Test Procedure for Electrical Connectors EIA B ELECTRONIC INDUSTRIES ASSOCIATION
ANSI/-1996 Approved: April 17, 1996 EIA STANDARD TP-27B Mechanical Shock (Specified Pulse) Test Procedure for Electrical Connectors (Revision of EIA-364-27A) MAY 1996 ELECTRONIC INDUSTRIES ASSOCIATION
More informationTHE PULSAR SOFTWARE OVERVIEW
Page: 1 THE PULSAR SOFTWARE OVERVIEW The Pulsar software uses the latest and most advanced tools and techniques in software engineering, with extensive use being made of object-oriented design and programming
More informationQuartz Lock Loop (QLL) For Robust GNSS Operation in High Vibration Environments
Quartz Lock Loop (QLL) For Robust GNSS Operation in High Vibration Environments A Topcon white paper written by Doug Langen Topcon Positioning Systems, Inc. 7400 National Drive Livermore, CA 94550 USA
More information2015 HBM ncode Products User Group Meeting
Looking at Measured Data in the Frequency Domain Kurt Munson HBM-nCode Do Engineers Need Tools? 3 What is Vibration? http://dictionary.reference.com/browse/vibration 4 Some Statistics Amplitude PDF y Measure
More informationNew Long Stroke Vibration Shaker Design using Linear Motor Technology
New Long Stroke Vibration Shaker Design using Linear Motor Technology The Modal Shop, Inc. A PCB Group Company Patrick Timmons Calibration Systems Engineer Mark Schiefer Senior Scientist Long Stroke Shaker
More informationVibration Analysis on Rotating Shaft using MATLAB
IJSTE - International Journal of Science Technology & Engineering Volume 3 Issue 06 December 2016 ISSN (online): 2349-784X Vibration Analysis on Rotating Shaft using MATLAB K. Gopinath S. Periyasamy PG
More informationA New Solution for Shock and Vibration Calibration of Accelerometers
A New Solution for Shock and Vibration Calibration of Accelerometers Marco Peres The Modal Shop, Inc. Robert D. Sill PCB Piezotronics Inc. Shock and vibration phenomena are present around us in everything
More informationDevelopment of a Package for a Triaxial High-G Accelerometer Optimized for High Signal Fidelity
Development of a Package for a Triaxial High-G Accelerometer Optimized for High Signal Fidelity R. Langkemper* 1, R. Külls 1, J. Wilde 2, S. Schopferer 1 and S. Nau 1 1 Fraunhofer Institute for High-Speed
More informationTABLE 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 informationTEST EQUIPMENT CO., LTD
Electromagnetic Type High Frequency Vibration Tester (ES-3) Technical Specification Index 1 Application...page 2 2 Vibration System...page 2-5 2-1 Technical Parameters 2-2 Vibration Components Details
More informationModal Excitation. D. L. Brown University of Cincinnati Structural Dynamics Research Laboratory. M. A. Peres The Modal Shop, Inc Cincinnati, OH
Modal Excitation D. L. Brown University of Cincinnati Structural Dynamics Research Laboratory M. A. Peres The Modal Shop, Inc Cincinnati, OH IMAC-XXVI, Modal Excitation, #356, Feb 04, 2008, Intoduction
More informationFundamentals of Vibration Measurement and Analysis Explained
Fundamentals of Vibration Measurement and Analysis Explained Thanks to Peter Brown for this article. 1. Introduction: The advent of the microprocessor has enormously advanced the process of vibration data
More informationA 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 informationFatigue testing. Fatigue design
Fatigue testing Lecture at SP Technical Research Institute of Sweden April 14, 2008 Gunnar Kjell SP Building Technology and Mechanics E-mail: gunnar.kjell@sp.se Fatigue design Need for material data (Distribution
More informationCHOOSING THE RIGHT TYPE OF ACCELEROMETER
As with most engineering activities, choosing the right tool may have serious implications on the measurement results. The information below may help the readers make the proper accelerometer selection.
More informationSHAKER TABLE SEISMIC TESTING OF EQUIPMENT USING HISTORICAL STRONG MOTION DATA SCALED TO SATISFY A SHOCK RESPONSE SPECTRUM Revision C
SHAKER TABLE SEISMIC TESTING OF EQUIPMENT USING HISTORICAL STRONG MOTION DATA SCALED TO SATISFY A SHOCK RESPONSE SPECTRUM Revision C By Tom Irvine Email: tom@vibrationdata.com March 12, 2015 The purpose
More informationACTUATORS AND SENSORS. Joint actuating system. Servomotors. Sensors
ACTUATORS AND SENSORS Joint actuating system Servomotors Sensors JOINT ACTUATING SYSTEM Transmissions Joint motion low speeds high torques Spur gears change axis of rotation and/or translate application
More informationThe units of vibration depend on the vibrational parameter, as follows:
Vibration Measurement Vibration Definition Basically, vibration is oscillating motion of a particle or body about a fixed reference point. Such motion may be simple harmonic (sinusoidal) or complex (non-sinusoidal).
More informationSimulate and Stimulate
Simulate and Stimulate Creating a versatile 6 DoF vibration test system Team Corporation September 2002 Historical Testing Techniques and Limitations Vibration testing, whether employing a sinusoidal input,
More informationSTEREO IMPACT Solar Energetic Particles Package (SEP) Dynamic Test Plan
1 2 Jet Propulsion Laboratory 352G-WBT-0507 Interoffice Memorandum January 13, 2005 To: From: Subject: References: Distribution W. B. Tsoi STEREO IMPACT Solar Energetic Particles Package (SEP) Dynamic
More informationMechanical Spectrum Analyzer in Silicon using Micromachined Accelerometers with Time-Varying Electrostatic Feedback
IMTC 2003 Instrumentation and Measurement Technology Conference Vail, CO, USA, 20-22 May 2003 Mechanical Spectrum Analyzer in Silicon using Micromachined Accelerometers with Time-Varying Electrostatic
More informationReliability Testing of MWD Assemblies Developing a Standard
Reliability Testing of MWD Assemblies Developing a Standard I.A.D.D. Forum Thursday, September 29, 2016 Presented by: Bob Joyce Questions One Must Ask?? Why is there no standard or best practice? Can we
More informationPaul Schafbuch. Senior Research Engineer Fisher Controls International, Inc.
Paul Schafbuch Senior Research Engineer Fisher Controls International, Inc. Introduction Achieving optimal control system performance keys on selecting or specifying the proper flow characteristic. Therefore,
More informationResearch on the Transient Response and Measure Method of Engineering Vibration Sensors
Research on the Transient Response and Measure Method of Engineering Vibration Sensors Shu-lin MA & Feng GAO Institute of Engineering Mechanics, China Earthquake Administration, China SUMMARY: (0 pt) This
More informationMODEL MODIFICATION OF WIRA CENTER MEMBER BAR
MODEL MODIFICATION OF WIRA CENTER MEMBER BAR F.R.M. Romlay & M.S.M. Sani Faculty of Mechanical Engineering Kolej Universiti Kejuruteraan & Teknologi Malaysia (KUKTEM), Karung Berkunci 12 25000 Kuantan
More informationHardware Inputs. Hardware Outputs. PC Connection. Software
Hardware Inputs Analog channels - 4,8,16,32 or 64 synchronized Resolution - 24-bit, ADC Voltage ranges - ±10, ±1 or ±0.1 VPK Filtering - Anti-aliasing analog filtering 160 db/oct digital filtering Coupling
More informationInductive Sensors. Fig. 1: Geophone
Inductive Sensors A voltage is induced in the loop whenever it moves laterally. In this case, we assume it is confined to motion left and right in the figure, and that the flux at any moment is given by
More informationImproving the Performance of a Geophone through Capacitive Position Sensing and Feedback. Aaron Barzilai. Stanford University
Improving the Performance of a Geophone through Capacitive Position Sensing and Feedback Stanford University Tom VanZandt, Steve Manion, Tom Pike Jet Propulsion Laboratory Tom Kenny Stanford University
More informationsin(wt) y(t) Exciter Vibrating armature ENME599 1
ENME599 1 LAB #3: Kinematic Excitation (Forced Vibration) of a SDOF system Students must read the laboratory instruction manual prior to the lab session. The lab report must be submitted in the beginning
More informationMAGNETIC 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 informationRecent System Developments for Multi-Actuator Vibration Control
Recent System Developments for Multi-Actuator Vibration Control Marcos A. Underwood, Tu tuli Enterprises, San Jose, California Tony Keller, Spectral Dynamics Corporation, San Marcos, California This article
More informationMEAS Silicon MEMS Piezoresistive Accelerometer and its Benefits
MEAS Silicon MEMS Piezoresistive Accelerometer and its Benefits Piezoresistive Accelerometers 1. Bonded Strain Gage type (Gages bonded to metal seismic mass using epoxy) Undamped circa 1950 s Fluid (oil)
More informationPosition Control of a Hydraulic Servo System using PID Control
Position Control of a Hydraulic Servo System using PID Control ABSTRACT Dechrit Maneetham Mechatronics Engineering Program Rajamangala University of Technology Thanyaburi Pathumthani, THAIAND. (E-mail:Dechrit_m@hotmail.com)
More informationMIL-STD-202G VIBRATION, HIGH FREQUENCY
VIBRATION, HIGH FREQUENCY 1. PURPOSE. The high frequency vibration test is performed for the purpose of determining the effect on component parts of vibration in the frequency ranges of 10 to 500 hertz
More informationActive 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 informationMeasurement Techniques
Measurement Techniques Anders Sjöström Juan Negreira Montero Department of Construction Sciences. Division of Engineering Acoustics. Lund University Disposition Introduction Errors in Measurements Signals
More informationModel CAACS Commercial Automated Accelerometer Calibration System
Commercial Automated Accelerometer Calibration System Features > Vibration calibration 0.5 Hz to 40 khz > Shock calibration 20 g to 10,000 g > Calibration of different type of transducers, PE, IEPE, PR,
More informationDYNAMIC CHARACTERIZATION OF ORIFICE TYPE AEROSTATIC BEARING
DYNAMIC CHARACTERIZATION OF ORIFICE TYPE AEROSTATIC BEARING Varun. M 1, M. M. M. Patnaik 2, Arun Kumar. S 3, A. Sekar 4 1Varun. M, Student, M.Tech (Machine Design), K. S. Institute of Technology, Karnataka,
More informationPiezoelectric multilayer triaxial accelerometer
Piezoelectric multilayer triaxial accelerometer C. Mangeot 1, B. Andersen 1, and M. Havránek 2 1 Noliac Motion, 2 Noliac Systems Hejreskovvej 18, Kvistgaard, 3470, Denmark Version: 200705 The accelerometer
More informationThe 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 informationHybrid Shaker Technology for Wide-band Vibration Test Systems
Hybrid Shaker Technology for Wide-band Vibration Test Systems Mr. Katsuhiko Nakamura 1, Mr. Kazuyoshi Ueno 1 Dr. John Goodfellow 2 1 IMV Corporation, R&D Centre, 2-6-10 Take-jima, Nishi-yodogawa-ku, Osaka,
More information430. The Research System for Vibration Analysis in Domestic Installation Pipes
430. The Research System for Vibration Analysis in Domestic Installation Pipes R. Ramanauskas, D. Gailius, V. Augutis Kaunas University of Technology, Studentu str. 50, LT-51424, Kaunas, Lithuania e-mail:
More informationMEMS. Platform. Solutions for Microsystems. Characterization
MEMS Characterization Platform Solutions for Microsystems Characterization A new paradigm for MEMS characterization The MEMS Characterization Platform (MCP) is a new concept of laboratory instrumentation
More informationPROVEN VIBRATION TEST SYSTEMS World class supplier of affordable vibration test equipment.
Sentek Product Guide -2015 6/3/15 14:45 Page 2 PROVEN VIBRATION TEST SYSTEMS World class supplier of affordable vibration test equipment www.sentekdynamics.com Total Quality Culture Sentek Dynamics supplies
More informationThe rapid evolution of
Shock Testing Miniaturized Products by George Henderson, GHI Systems Smaller product designs mandate changes in test systems and analysis methods. Don t be shocked by the changes. Figure 1. Linear Shock
More informationMECE 3320 Measurements & Instrumentation. Data Acquisition
MECE 3320 Measurements & Instrumentation Data Acquisition Dr. Isaac Choutapalli Department of Mechanical Engineering University of Texas Pan American Sampling Concepts 1 f s t Sampling Rate f s 2 f m or
More informationELECTROMAGNETIC MULTIFUNCTIONAL STAND FOR MEMS APPLICATIONS
ELECTROMAGNETIC MULTIFUNCTIONAL STAND FOR MEMS APPLICATIONS 1 Cristian Necula, Gh. Gheorghe, 3 Viorel Gheorghe, 4 Daniel C. Comeaga, 5 Octavian Dontu 1,,3,4,5 Splaiul Independenței 313, Bucharest 06004,
More informationExploration of Uni-axial Shaketable Dynamics
CU-NEES-08-05 NEES at CU Boulder 01000110 01001000 01010100 The George E Brown, Jr. Network for Earthquake Engineering Simulation Exploration of Uni-axial Shaketable Dynamics By Ryan Doheny University
More informationOptical Correlator for Image Motion Compensation in the Focal Plane of a Satellite Camera
15 th IFAC Symposium on Automatic Control in Aerospace Bologna, September 6, 2001 Optical Correlator for Image Motion Compensation in the Focal Plane of a Satellite Camera K. Janschek, V. Tchernykh, -
More informationMS / Single axis analog accelerometer in TO8 30S.MS7XXX.J.05.11
MS7000.3 / Single axis analog accelerometer in TO8 30S.MS7XXX.J.05.11 Energy Mil/Aerospace Industrial Inertial Tilt Vibration Seismic Features ±2g and ±10g range Good bias stability (less than 0.1% of
More informationSRI VENKATESWARA COLLEGE OF ENGINEERING AND TECHNOLOGY
SRI VENKATESWARA COLLEGE OF ENGINEERING AND TECHNOLOGY DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING IC 6501 CONTROL SYSTEMS UNIT I - SYSTEMS AND THEIR REPRESETNTATION` TWO MARKS QUESTIONS WITH
More informationResonance Tube Lab 9
HB 03-30-01 Resonance Tube Lab 9 1 Resonance Tube Lab 9 Equipment SWS, complete resonance tube (tube, piston assembly, speaker stand, piston stand, mike with adaptors, channel), voltage sensor, 1.5 m leads
More informationA METHOD FOR OPTIMAL RECONSTRUCTION OF VELOCITY RESPONSE USING EXPERIMENTAL DISPLACEMENT AND ACCELERATION SIGNALS
ICSV14 Cairns Australia 9-12 July, 27 A METHOD FOR OPTIMAL RECONSTRUCTION OF VELOCITY RESPONSE USING EXPERIMENTAL DISPLACEMENT AND ACCELERATION SIGNALS Gareth J. Bennett 1 *, José Antunes 2, John A. Fitzpatrick
More informationIPC-TM-650 TEST METHODS MANUAL
SSOCITION CONNECTING ELECTRONICS INDUSTRIES 2215 Sanders Road Northbrook, IL 60062-6135 TEST METHODS MNUL Originating Task Group N/ 1.0 Scope 3.3 Fixturing 1.1 To determine the effect on the connector
More informationCOVENANT 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 informationAircraft modal testing at VZLÚ
Aircraft modal testing at VZLÚ 1- Introduction 2- Experimental 3- Software 4- Example of Tests 5- Conclusion 1- Introduction The modal test is designed to determine the modal parameters of a structure.
More informationAn Alternative to Pyrotechnic Testing For Shock Identification
An Alternative to Pyrotechnic Testing For Shock Identification J. J. Titulaer B. R. Allen J. R. Maly CSA Engineering, Inc. 2565 Leghorn Street Mountain View, CA 94043 ABSTRACT The ability to produce a
More information2 Study of an embarked vibro-impact system: experimental analysis
2 Study of an embarked vibro-impact system: experimental analysis This chapter presents and discusses the experimental part of the thesis. Two test rigs were built at the Dynamics and Vibrations laboratory
More informationDo all accelerometers behave the same? Meggitt-Endevco, Anthony Chu
Do all accelerometers behave the same? Meggitt-Endevco, Anthony Chu A leader in design and manufacturing of accelerometers & pressure transducers, Meggitt Endevco strives to deliver product innovations
More informationSETUP I: CORD. Continuous Systems
Lab #8 Continuous Systems Name: Date: Section / Group: SETUP I: CORD This part of the laboratory is mainly exploratory in nature. By using your hand to force the cord close to one of its ends, you should
More information2B34 DEVELOPMENT OF A HYDRAULIC PARALLEL LINK TYPE OF FORCE DISPLAY
2B34 DEVELOPMENT OF A HYDRAULIC PARALLEL LINK TYPE OF FORCE DISPLAY -Improvement of Manipulability Using Disturbance Observer and its Application to a Master-slave System- Shigeki KUDOMI*, Hironao YAMADA**
More informationPRODUCT & PACKAGE SHOCK TESTING. Herb Schueneman Chairman, WESTPAK, Inc.
PRODUCT & PACKAGE SHOCK TESTING Herb Schueneman Chairman, WESTPAK, Inc. May 2016 PRODUCT & PACKAGE SHOCK TESTING Herb Schueneman Chairman, WESTPAK, Inc. May 2016 What s This All About? Why, how, and when
More informationStructural Dynamics Measurements Mark H. Richardson Vibrant Technology, Inc. Jamestown, CA 95327
Structural Dynamics Measurements Mark H. Richardson Vibrant Technology, Inc. Jamestown, CA 95327 Introduction In this paper, the term structural dynamics measurements will more specifically mean the measurement
More informationModel CAACS Commercial Automated Accelerometer Calibration System
Commercial Automated Accelerometer Calibration System Features > Vibration calibration 0.5 Hz to 40 khz > Shock calibration 20 g to 10,000 g > Calibration of different type of transducers, PE, IEPE, PR,
More informationPROVEN VIBRATION TEST SYSTEMS
PROVEN VIBRATION TEST SYSTEMS World class supplier of affordable vibration test equipment www.sentekdynamics.eu Total Quality Culture Sentek Dynamics supplies vibration test equipment to reproduce real-world
More informationSensors. Chapter 3. Storey: Electrical & Electronic Systems Pearson Education Limited 2004 OHT 3.1
Sensors Chapter 3 Introduction Describing Sensor Performance Temperature Sensors Light Sensors Force Sensors Displacement Sensors Motion Sensors Sound Sensors Sensor Interfacing Storey: Electrical & Electronic
More informationSolution of Pipeline Vibration Problems By New Field-Measurement Technique
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 1974 Solution of Pipeline Vibration Problems By New Field-Measurement Technique Michael
More informationPredicting and measuring non-linear behaviour at spacecraft level NAFEMS France Conference
Predicting and measuring non-linear behaviour at spacecraft level NAFEMS France Conference June the 8th, 2011 Laurent SOULA (ASTRIUM Satellite France) Alfred Newerla (ESTEC) Agenda Purpose of the study
More information3.0 Apparatus. 3.1 Excitation System
3.0 Apparatus The individual hardware components required for the GVT (Ground Vibration Test) are broken into four categories: excitation system, test-structure system, measurement system, and data acquisition
More informationTools for Shake Table Users. Ozgur Ozcelik, Ph.D. Research Scientist University of California, San Diego December 13, 2018
NHERI@UCSD: Tools for Shake Table Users Ozgur Ozcelik, Ph.D. Research Scientist University of California, San Diego December 3, 28 NHERI @ UCSD Workshop, 3-4 December, 28 Outline Shake table simulation
More informationUsing rapid control prototyping for flexible environmental testing of vehicle and aerospace components
Computational Methods and Experimental Measurements XII 269 Using rapid control prototyping for flexible environmental testing of vehicle and aerospace components F. Deuble, G. Ferraris, F. Hölig & C.
More information