COURSE INFORMATION. Course Prefix/Number: EET 231. Lecture Hours/Week: 3.0 Lab Hours/Week: 3.0 Credit Hours/Semester: 4.0

Size: px

Start display at page:

Download "COURSE INFORMATION. Course Prefix/Number: EET 231. Lecture Hours/Week: 3.0 Lab Hours/Week: 3.0 Credit Hours/Semester: 4.0"

Laurence Blake
5 years ago
Views:

1 COURSE INFORMATION Course Prefix/Number: EET 231 Course Title: Industrial Electronics Lecture Hours/Week: 3.0 Lab Hours/Week: 3.0 Credit Hours/Semester: 4.0 VA Statement/Distance Learning Attendance Textbook Information Student Code and Grievance Policy Attendance Statement (Page 51) COURSE DESCRIPTION This course is a survey of topics related to industrial application of electronic devices and circuits. The course covers switches, DC and AC motor controls, sensors and transducers, open and closed-loop control circuits, and voltage converting interfaces. Circuits are constructed and tested. COURSE COMPETENCIES Upon successful completion of this course, the student should be competent to perform the following tasks Module 1: Introduction/Logic Gates/Instrumentation Amplifier Describe the characteristics of the open and closed loop systems Describe the characteristics of the following types of control circuits Time driven Process control o Batch o Sequential Control o Direct digital Control o Distributed Control o Continuous o Motion Control o Numerical Control Identify the parts of open and closed loop systems Describe feedback control Describe feed forward control Identify the following terms o Lag time o Dead time o Signal conditioning Transfer function (TF) Ground loop o Single point ground Current loop EET of 8 Revised 12/2015

2 List the characteristics of an ideal and practical op-amp. Determine the output of the following op-amp configurations o Inverting amplifier o Non-inverting amplifier o Summing amplifier o Difference amplifier Module 2: Sensors/Transducers/Switches Temperature/Humidity Define the three scales most commonly used to measure temperature. Describe the construction and operation of the following temperature detection devices: o Bimetallic Thermometer o Filled Thermal System o Resistance Temperature Detectors (RTDs) o Thermocouples Explain how intermediate metals can affect the operation of a thermocouple. Explain the effect of connecting thermocouples in series and in parallel to measure State how to determine the polarity of a thermocouple temperature. Describe the importance of reference junction compensation when using a thermocouple to measure temperature. Explain the purpose of using an "ice bath" when checking the operation of a thermocouple. Describe the operation of the following humidity sensors o Hygrometers o Hair Sorption Resistance Capacitive o Psychrometers o Microwave absorption Pressure/force o Define the relationship between pressure, force, and area. o Describe the relationship between atmospheric pressure, absolute pressure vacuum pressure, and gauge pressure. o Describe the units commonly used to measure pressure. o Given a list of pressure units, Convert the pressure units from one form to another. o Explain hydrostatic pressure measurement. o Describe the construction and operation of the following pressure measuring devices Manometers. Elastic deformation devices to include: Bourdon Tube Diaphragm (Capsule) Bellows Capacitance Strain Gauge LVDT s o Describe how elastic deformation sensors can be used to provide remote indication and control. o Describe the effect a water leg (reference) has on pressure measurements. o Flow/velocity/acceleration/jerk EET of 8 Revised 12/2015

3 o Describe the characteristics and physical properties associated with fluids and fluid flow. o Describe the relationship between pressure and flow with respect to fluid flow through a restriction. o Define the terms Laminar Flow and Turbulent flow o Define the terms Flow Rate and Total Flow. o Describe five restrictor type (non-linear) devices used to measure flow to include the following: Orifice Plate Venturi Tube Flow Nozzle Pitot Tube Elbow Tap o Describe four linear type devices used to measure flow to include the following: Rotameter Magnetic Flowmeter Turbine Flowmeter Ultrasonic Flowmeter o Describe how the following types of flow meters are used to measure flow Doppler Capacitive Piezoelectric Accelerometers Tachometers Potentiometers Cantilever Heat transfer Describe the function of a square root extractor in a flow measuring system. Level o Describe the characteristics of liquids that affect liquid level measurement. o Define the term Specific Gravity and describe its effect on liquid level measurements. o Describe the relationship between pressure and level with respect to liquid level measurements. o Describe the operation of conductivity, capacitance, and ultrasonic probes used for level measurement. o Describe the operation of a Bubbler System used to measure level. o Describe the operation of displacer level measuring device. o Explain the operation of differential pressure level measurement devices. o Describe the operation of a differential pressure type level measurement for the following: Open Tank Closed/Pressurized Tank Position o Magnetism o Light Module 3: Motors Generators State how AC and DC generators are different. Explain three methods of excitation used on AC generators. EET of 8 Revised 12/2015

4 Explain how three-phase power is generated. State how AC generators are rated. Discuss the synchronization of a generator to another generator. Discuss how voltage and speed are controlled on generators that are NOT paralleled with other generators. Discuss how voltage and speed are controlled on generators that ARE paralleled with other generators List the three requirements for inducing a voltage Discuss Faraday's Law of Electromagnetic Induction State the function of a Generator Explain the operation of AC generators Explain the purpose of the commutator and brushes on a DC generator DC Motors State the purpose of the brushes, stator and rotor of a DC Motor Explain the basic operating principles of DC Motors. Describe what speed and torque characteristics are associated with DC Motors. Identify how counter EMF (CEMF) effects DC motor operation. Explain why starting resistors are needed on large DC Motors. State the effects of operating a DC Motor with no load applied. Identify the advantages and disadvantages of DC Motors. Describe how to reverse the rotation of a DC Motor. Identify brush problems and brush maintenance practices in DC Motors. Explain how to identify commutator problems in DC Motors. Disassemble and assemble a DC Motor in accordance with requirements of the lab exercise Measure current, speed, insulation resistance, and winding resistance on a DC Motor in accordance with the lab exercise. Identify applications of DC Motors. AC Motors Single Phase State the purpose of the stator and rotor of an AC motor Describe the operation of a single-phase induction motor. Explain why most single-phase induction motors require starting assist devices. Define the term slip as it relates to induction motors. Describe the following types of single-phase motors including their integral parts: o Shaded-Pole Induction Motor o Split-Phase Induction Motors o Wound Rotor o Capacitor Start/Capacitor Run Explain how to reverse rotational direction of the following single-phase motors: o Shaded-Pole Induction Motor o Split-Phase Induction Motor o Wound Rotor o Capacitor Start/Capacitor Run State the resultant failure for each of the following motor problems: o Shorted or open capacitor o Centrifugal switch stuck open o Centrifugal switch stuck closed Given a motor nameplate wiring diagram, Determine the following: EET of 8 Revised 12/2015

5 o Voltage and Amperage Ratings o Low voltage Connections o High Voltage Connections Disassemble and assemble a Single-Phase AC Motor in accordance with requirements of the Lab Exercise. Measure current, speed, insulation resistance, and winding resistance on a Single-Phase AC Motor in accordance with the Lab Exercise. Identify applications of single-phase AC Motors. AC Motors Three Phase Explain the basic operating principles of three-phase AC motors. Explain why a three-phase motor self-starts. Define Synchronous Speed. Explain why starting current is higher than running current on a three-phase motor Describe the operation of the following three-phase motors and the characteristics of each. o Squirrel Cage Induction Motor o Synchronous Motor Describe the term single-phasing and how to recognize this condition Define the term Breakdown Torque. Discuss the advantages of using three-phase motors vs. single-phase motors. Explain how direction of rotation is reversed in a three-phase motor. State when and how the phase rotation meter should be used in three-phase motor applications. Explain the term wye configuration in reference to three-phase motor applications. Explain the term delta configuration in reference to three-phase motor applications Demonstrate the ability to measure current, insulation resistance, and winding resistance on a Three-Phase AC Motor in accordance with the appropriate plant procedure and lab. Identify applications of three-phase AC Motors. Stepper Motors Explain the basic operating principles of stepper motors. Identify applications of Stepper Motors. Describe the operation of the following stepper motors: o Permanent Magnet o Variable Reluctance o Hybrid Discuss the advantages and disadvantages of each of the stepper motors. Define the following terms: o Holding torque o Détente torque o Residual torque o Bipolar o Step angle o Multi stack steppers o Step rate o Unipolar Universal Motors Describe the operation of a Universal Motor EET of 8 Revised 12/2015

6 State the purpose of brushes in the Universal Motor Discuss the purpose of the compensating winding Compare the torque characteristics of the universal motor running under DC to those of the motor running under AC Identify applications of Universal Motors. MINIMAL STANDARDS/PERFORMANCE OBJECTIVES Module 1: Introduction/Logic Gates/Instrumentation Amplifier Given parts and instructions, the student must build, test and demonstrate an Instrumentation Amplifier (IA) using common operational amplifiers within 80% of expected values. Given parts and instructions, the student must build, test and demonstrate an IA circuit using an integrated IA with 100% accuracy. Given lectures and notes, the student must attain the competencies listed in above with 80% accuracy. Module 2: Sensors/Transducers/Switches Given an IC Op Amp and various types of transducers, construct circuits utilizing the sensors and Op Amp working with an 80% accuracy Given a heat source, determine the temperature using a thermocouple and a DVM. Module 3: Motors Given a dissectible motor, assemble and disassemble a DC Motor with 100% accuracy. Given instruction and components, construct a powered DC motor, measure current, speed, voltage, power and winding resistance with 90 % accuracy. Given a motor nameplate wiring diagram, determine the following: o Voltage and Amperage Ratings o Low voltage Connections High Voltage Connections Given a dissectible motor, disassemble and assemble a Single-Phase AC Motor with 100% accuracy. Given instruction and components, construct a powered single phase AC motor, measure current, speed, voltage, power and winding resistance with 90% accuracy. Given instruction and components construct a powered three-phase AC motor, measure current, speed, voltage, and power with 90% accuracy. Given instruction and components, construct a powered universal motor, measure current, speed, voltage, and power with 90% accuracy. Given instruction and components, construct a powered Stepper motor that will work with 100% accuracy. COURSE REQUIREMENTS Students are responsible for attaining competencies through completion of the following course requirements: Academic Integrity The policies stated in the York Technical College Handbook will be enforced. Any student violating these policies will be subject to academic discipline. EET of 8 Revised 12/2015

7 METHOD OF INSTRUCTION This course may be offered in either a traditional or a hybrid format. In the traditional format, this course consists of 48 hours of in-class lecture and 48 hours of laboratory time each for each course. The class instruction includes lectures, discussions, problem-solving sessions, and tests. The lectures are administered using the chalkboard, PowerPoint, and video tapes. The discussions consist of student-student and student-instructor dialogue. The problemsolving sessions consist of students working problems on the chalkboard or at their desks while the instructor checks their work. The laboratory experiments follow and complement the class lectures. The students are given instructions before the laboratory begins so they can perform the experiment. In the hybrid format, the students will be responsible for the basic material by reading the text book, by reviewing the online notes and PowerPoint s. Labs will follow the traditional format. In the hybrid format, the students should spend at least two hours per week accessing the on-line learning material. STUDENTS ARE EXPECTED TO PARTICIPATE IN CLASS DISCUSSIONS, SOLVE PROBLEMS, COMPLETE: 1) ASSIGNED HOMEWORK, 2) COMPUTER PROGRAMS, 3) SIMULATIONS, 4) LAB EXPERIMENTS AND 5) REPORTS. Laboratory Requirements Laboratory experiment worksheets will be handed out each week, completed by the student, and submitted by the next laboratory period. All data taken during the experiment and observations noted by the student will be part of the laboratory report. Any questions will be answered and a hard copy of all computer simulations will be attached to the laboratory report prior to submission. EVALUATION STRATEGIES/GRADING The following scale will be the standard: Grade Range A B C D F Below 60 Final grades will be determined as follows: Each module will have equal weight and contribute 25% toward the final grade. Grades for each module will be determined as follows: Major Tests (minimum of 1)... 50% Laboratory (minimum of 1)... 25% Instructor Options... 15% Affective Skills... 10% Attendance at 95% or more of the classes and labs. Dependability (No tardiness). Acceptable student conduct as defined in the College Catalog. The instructor options will be discussed with the students during the first week of class. These EET of 8 Revised 12/2015

8 options may include homework, spot quizzes, projects, or written reports. Students are expected to "conduct themselves with dignity and to maintain high standards of responsible citizenship." (York Technical College Catalog, Student Life Section, "Student Conduct"). Points will be deducted for disruptive behavior that violates the principles of acceptable conduct. ENTRY LEVEL SKILLS The student must be able to build and test a basic electronic circuit starting with a schematic diagram. PREREQUISITE EET 111 or equivalent with minimum grade of C CO-REQUISITE EET 112 or equivalent, MAT 110 DISABILITIES STATEMENT Any student who feels s/he may need an accommodation based on the impact of a disability should contact the Special Resources Office (SRO) at in the 300 area of Student Services. The SRO coordinates reasonable accommodations for students with documented disabilities. EET of 8 Revised 12/2015

5. Transducers Definition and General Concept of Transducer Classification of Transducers

5. 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