ET-320: Electrical Control Systems

Course Information

Course, prefix, number, & title: ET-320 Electrical Control Systems

Hours (Class, recitation, Laboratory, studio): 3 class hours, 3 laboratory hours

Credits: 3

Pre-requisites (if any): ET-220

Co-requisites (if any): ET-560

Course Description in college catalog:

Servomechanism components, operational amplifiers, Laplace transforms, block diagram algebra, transfer functions, steady state and transient analysis of second order systems, proportional control and tach feedback, frequency response analysis, Bode plot, stability gain margin and phase margin, compensation techniques, digital to analog conversion, robotic applications.  Laboratory hours complement class work.

Textbook: Introduction to Feedback Control Systems, Emanuel and Leff (QCC Press-1979) PDF file on Blackboard - no cost textbook

Lab Manual: Control Systems Laboratory Manual, H. Namdar - online
Feedback Inc. 33-033 Control and Instrumentation Principles Course Content software

Academic programs for which this course serves as a requirement or an elective:

A.A.S. Electronic Engineering Technology

General Education Outcomes: Below is a listing of General Education Outcome(s) that this course supports.

  1. Use analytical reasoning to identify issues or problems and evaluate evidence in order to make informed decisions

  2. Reason quantitatively as required in various fields of interest and in everyday life

Course-specific student learning outcomes:

In order to pass ET-320, a passing grade must be obtained in both Lecture and Laboratory.

ET320 Course Goals:

  • To prepare students for a Bachelor’s Program in ET and give them a basic understanding of Feedback Control Systems for the workplace.
  • Students will identify Open and Closed-Loop Control Systems.
  • Describe the use of servo components in a system.
  • Students will define the gain of an Op-Amp, Potentiometer, Tachometer, gears, and a DC Motor.
  • Solve a differential equation using the classical method and the Laplace transform.
  • Students will identify the Forced Response and Transient Response of a system.
  • State the Transfer Function of components and block diagram of a system.
  • Students will demonstrate digital control system
  • Analyze a positional servomechanism control system.

Student Outcome (1) - an ability to apply knowledge, techniques, skills and modern tools of mathematics, science, engineering, and technology to solve well-defined engineering problems appropriate to the discipline;

  • Performance Indicator ETCT1-1 Apply engineering principles to analyze and design electrical, electronic, and computer circuits and systems including semiconductor devices, filters, and amplifiers
  • Performance Indicator ETCT1-5 Analyze systems in a mathematical environment at or above the level of algebra and trigonometry.

Student Outcome (4) - an ability to conduct standard tests, measurements, and experiments and to analyze and interpret the results;

  • Performance Indicator ETCT4-1 Verify system performance by taking measurements and interpreting results.
  • Performance Indicator ETCT4-3 Construct, test and validate electronic circuits from circuit schematics and logic diagrams.

Program-specific outcomes

(1) An ability to apply knowledge, techniques, skills and modern tools of mathematics, science, engineering, and technology to solve well-defined engineering problems appropriate to the discipline;

(2) An ability to design solutions for well-defined technical problems and assist with engineering design of systems, components, or processes appropriate to the discipline;

(3) An ability to conduct standard tests, measurements, and experiments and to analyze and interpret the results;

(4) An ability to function effectively as a member of a technical team;

(5) An ability to apply written, oral, and graphical communication in both technical and non-technical environments; and an ability to identify and use appropriate technical literature;

Other program outcomes (if applicable).

  1. Integrate knowledge and skills in the program of study

Supplemental Information

ET 320 Lecture Course Topics- Table of Week Numbers and Lecture Course Topics:

ET 320 Lecture Course Topics table of week Numbers and Lecture Course Topics
Week Lecture Topics
1 Introduction to Feedback Control Systems- Open and closed loop
2,3 System Components- Potentiometer, Operational Amplifier, DC Generator, Tachometer, DC Motor, Gears
4,5 Differential Equations, Classical Method, Laplace Transform, Partial Fractions
6 Transfer Functions of Components, Block Diagrams
7,8 Analysis of Second-order Servo System-Transient and Steady State, General Considerations for a Second-Order System
8 Midterm Examination
9, 10 Frequency-Response Analysis, Bode Plot, Compensation
11 Introduction to Robotics
12 Data Acquisition and Interface Components-D/A and A/D
13 Sample-and-Hold Circuit
14 Review examples and exercises.
15 Final Examination

ET 320 Lab Course Topics- Tables of Week Numbers and Lab Course Topics:

ET 320 Lab Course Topics table of Week Numbers and Lab Course Topics
Week Laboratory Experiment Number and Topics
1 Lab 1: Introduction to Laboratory equipment
2 Lab 2: Operational Amplifiers
3 Lab 3: Analogue Transducers
4 Lab 4: Motor and Brake Characteristics
5 Lab 5: Closed Loop Control
6 Lab 6: Stability and the Effect of loop gain
7 Lab 7: Velocity Feedback
8 Lab 8: System Time constant and Instability
9 Lab 9: Closed loop speed control
10 Lab 10: Integral Control
11 Lab 11: Introduction to Robotics
12 Lab 12: Designing and Building a Robot
13 Lab 13: Digital to Analog Converters
14 Lab 14: Analog to Digital Converters

Methods by which student learning will be assessed and evaluated; describe the types of methods to be employed; note whether certain methods are required for all sections:

  • Exams
  • Lab reports
  • Classwork
  • Homework
  • Oral presentation Project
  • Final Exam

Academic Integrity policy (department or College):
Academic honesty is expected of all students. Any violation of academic integrity is taken extremely seriously. All assignments and projects must be the original work of the student or teammates. Plagiarism will not be tolerated. Any questions regarding academic integrity should be brought to the attention of the instructor. The following is the Queensborough Community College Policy on Academic Integrity: "It is the official policy of the College that all acts or attempted acts that are violations of Academic Integrity be reported to the Office of Student Affairs. At the faculty member's discretion and with the concurrence of the student or students involved, some cases though reported to the Office of Student Affairs may be resolved within the confines of the course and department. The instructor has the authority to adjust the offender's grade as deemed appropriate, including assigning an F to the assignment or exercise or, in more serious cases, an F to the student for the entire course." Read the University's policy on Academic Integrity opens in a new window(PDF).

Any student who feels that he or she may need an accommodation based upon the impact of a disability should contact the office of Services for Students with Disabilities in Science Building, Room S-132, 718-631-6257, to coordinate reasonable accommodations for students with documented disabilities. You can visit the Services for Students with Disabilities website.

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