MCCCD Program Description

Servo Systems

Course: ELC214

First Term: 2008 Spring

Lecture 3 Credit(s) 3 Period(s) 3 Load
Subject Type: Occupational
Load Formula: S

Description: Introduction to Servo Systems usages and applications of servos, types of transducers used in servo systems, driver systems including motors, power amplifiers, and control amplifiers; rotary and velocity control systems; and resolvers, optical encoders, linear variable differential transformers, and linear position servo systems

MCCCD Official Course Competencies
1. Compare and contrast open-loop systems with closed-loop control systems. (I) 2. Define terms associated with open and closed loop systems. (II) 3. Explain the operation, and construction of linear and rotary potentiometers. (III) 4. Define the terms associated with potentiometers. (IV) 5. Calculate sensitivity for linear and rotary potentiometers. (V) 6. Compare and contrast the alternating current (AC) and the direct current (DC) tachometer generator. (VI) 7. Calculate output verses speed. (VII) 8. Describe the operation of encoder and resolver that provide an output position. (VIII) 9. Define the terms associated with encoder and resolver devices. (IX) 10. Compare and contrast absolute with incremental encoders. (X) 11. Discuss the advantages and disadvantages of using resolvers to optical encoders. (XI) 12. Explain the operation of a direct current (DC) servo motor. (XII) 13. Compare and contrast the characteristics of power and control amplifiers. (XIII) 14. Define the terms associated with gain of open and closed loop control systems. (XIV) 15. Calculate gains associated with open and closed loop control systems. (XV)
MCCCD Official Course Competencies must be coordinated with the content outline so that each major point in the outline serves one or more competencies. MCCCD faculty retains authority in determining the pedagogical approach, methodology, content sequencing, and assessment metrics for student work. Please see individual course syllabi for additional information, including specific course requirements.

MCCCD Official Course Outline
I. Control systems A. open-loop B. closed-loop II. Terms for open and closed loop systems A. proportional B. comparator C. error signal D. servomechanism E. automatic F. manual G. feedback III. Linear and rotary potentiometers A. operation B. construction IV. Terms for linear and rotary potentiometers A. sensitivity B. excitation C. displacement D. slider V. Calculate sensitivity A. linear B. rotary VI. Tachometer generator A. alternating current (AC) B. direct current (DC) VII. Calculate A. output v. speed VIII. Operation A. optical encoder B. resolver IX. Terms associated with optical encoder and resolver. A. incremental B. absolute X. Incremental and absolute. A. compare B. contrast XI. Advantages and disadvantages. A. resolvers B. optical encoder XII. Direct current motors. A. operation B. permanent magnet C. function of the brushers D. linear speed verses torque curve E. starting torque F. specifications XIII. Characteristics of amplifiers. A. control B. power XIV. Terms associated with gain of an open and closed loop control system. A. signal form B. gain C. polarity D. forward path E. feedback path XV. Calculate gains A. gain B. control amplifier gain C. power amplifier gain D. motor gain E. system gain (open loop) F. feedback gain G. loop velocity gain (closed loop)

MCCCD Governing Board Approval Date: 11/27/2007

All information published is subject to change without notice. Every effort has been made to ensure the accuracy of information presented, but based on the dynamic nature of the curricular process, course and program information is subject to change in order to reflect the most current information available.