18EE651 Industrial Servo Control Systems syllabus for EE

Servos:

Introduction, Benefits of Servo Systems, Types of Servos - Evolution of Servo Drives, Classification of Drives, Components of Servos - Hydraulic/Electric Circuit Equations, Actuators- Electric, Actuators-Hydraulic,Amplifiers-Electric,Amplifiers-Hydraulic,Transducers (Feedback).

Machine Servo Drives:

Types of Drives, Feed Drive Performance.

Troubleshooting Techniques:

Techniques by Drive, Problems: Their Causes and Cures.

Machine Feed Drives:

Advances in Technology, Parameters for making Application Choices.

Application of Industrial Servo Drives:

Introduction ,Physical System Analogs, Quantities and Vectors, Differential Equations for Physical Systems, Electric Servo Motor Transfer Functions and Time Constants, Transport Lag Transfer Function, Hydraulic Servo Motor Characteristics, General Transfer Characteristics.

Generalized Control Theory:

Servo Block Diagrams, Frequency-Response Characteristics and Construction of Approximate (Bode) Frequency Charts, Nichols Charts, Servo Analysis Techniques, Servo Compensation.

Indexes of Performance:

Definition of Indexes of Performance for Servo Drives, Indexes of Performance for Electric and Hydraulic Drives.

Performance Criteria:

Percent Regulation, Servo System Responses.

Servo Plant Compensation Techniques:

Dead-Zone Nonlinearity, Change-in-Gain Nonlinearity, Structural Resonances, Frequency Selective Feedback, Feed forward Control.

Machine Considerations:

Machine feed drive Considerations, Ball Screw Mechanical Resonances and Reflected Inertias for Machine Drives.

Machine Considerations:

Drive Stiffness, Drive Resolution, Drive Acceleration, Drive Speed Considerations, Drive Ratio Considerations, Drive Thrust/Torque And Friction Considerations, Drive Duty Cycles.

Course Outcomes:

At the end of the course the student will be able to:

• Explain the evolution and classification of servos, with descriptions of servo drive actuators, amplifiers, feedback transducers, performance, and troubleshooting techniques.
• Discuss system analogs, vectors and transfer functions of differential equations.
• Discuss mathematical equations for electric servo motors, both DC and brushless DC servo motors.
• Represent servo drive components by their transfer function, to combine the servo drive building blocks into system block diagrams.
• Determine the frequency response techniques for proper servo compensation.
• Explain perform indices and performance criteria for servo systems and discuss the mechanical considerations of servo systems.

Question paper pattern:

• The question paper will have ten full questions carrying equal marks.
• Each full question will be for 20 marks.
• There will be two full questions (with a maximum of four sub- questions) from each module.
• Each full question will have sub- question covering all the topics under a module.
• The students will have to answer five full questions, selecting one full question from each module.

Textbook

1 Industrial Servo Control Systems Fundamentals and Applications George W. Younkin Marcel Dekker 1st Edition, 2003

Reference Books

1 Servo Motors and Industrial Control Theory Riazollah Firoozian Springer 2nd Edition, 2014

2 DC SERVOS Application and Design with MATLAB Stephen M. Tobin CRC 1st Edition, 2011