Digital Control Engineering

Recent developments in LSI Technology and the consequent availability of inexpensive microprocessors, Memory chips and analog-to-digital converters have made it possible to use computers as integral part of control systems. This book presents control theory that is relevant to the analysis and design of computer-controlled systems.

Among its features, the book:

1. Contains appendices that summarize the relevant background material;
2. Summarizes the theoretical and practical aspects of a Large class of transform-domain and state-space design algorithms;
3. Describes the background to many current approaches to self-tuning control;
4. Includes a computer-aided-design package;
5. Discusses basic characteristics of stepping motors and their associated drives;
6. Presents important Hardware and Software aspects of implementation of digital control Algorithms using microprocessors;
7. Includes three case studies on microprocessor-based control.

Technologykeyword/Research-Publications" Title="Research-Publications">Research Publicationssor in the Department of Electrical Engineering at the Indian Institute of Technology Delhi. For a short term, he was appointed as Honorary Visiting Professor in the Control Engineering Centre of the City University, London. The author/joint author of Modern Control System Theory (1984) and Control Systems Engineering, 2nd Edition (1981). Dr. Gopal has been Teaching courses in Control and System Engineering for the past seventeen years.

Dr. Gopal has a large number of Research publications to his credit. He has guided many research projects leading to the award of Ph.D. degree and his current research interests are in the areas of computer-aided-design and digital control. He received his B.E. (Hons.), M.E., and Ph.D. degrees in 1968, 1970 and 1976.

Preface

Chapter I : SAMPLING AND RECONSTRUCTION :
1. Introduction
2. Sampled-Data Control Systems
3. Digital-to-Analog Conversion
4. Analog-to-Digital Conversion
5. Sarapte-and-Hold Operations
6. Frequency-Domain Considerations in Sampling and Reconstruction
7. Concluding Comments
A 1.1. The Fourier Transform

Chapter II : TRANSFORM ANALYSIS OF SAMPLED-DATA SYSTEMS :
1. Introduction
2. Linear Difference Equations
3. The Pulse Response
4. The z-Transform
5. The Pulse Transfer Function
6. Block Diagram Analysis of Sampled-Data Systems
7. z-Domain Equivalents to s-Domain Compensators
8. Stability Analysis
9. Systems with Dead-Time
10. Concluding Comments
A 2.1. Short Table of Transform Pairs
Problems

Chapter III : TRANSFORM DESIGN OF DIGITAL CONTROLS :
1. Introduction
2. Design Example : Position Servo
3. Design Specifications
4. Design on the w-Plane
5. Design on the w'-Plane
6. The Digital PID Controller
7. Design on the z-Plane
8. Multivariable Controllers
9. Concluding Comments
A 3.1. Bode Plots
Problems

Chapter IV: STATE SPACE ANALYSIS OF SAMPLED-DATA SYSTEMS :
1. Introduction
2. Discrete-Time State Equations
3. Similarity Transformations
4. The Cayley-Hamilton Theorem
5. Realization of Pulse Transfer Functions
6. State Equations for Sampled-Data Systems
7. Design Example-Mixing Tank
8. Concepts of Controllability and Observability
9. Lyapunov Stability Analysis
10. Systems with Dead-Time
11. Concluding Comments
A 4.1. Selected Results from Linear Algebra
Problems

Chapter V : DESIGN OF DIGITAL CONTROLS USING STATE SPACE CONCEPTS :
1. Introduction
2. Formulation of the Optimal Control Problem
3. Optimal State Regulator
4. Use of State Regulator Results to Solve Other Optimal Control Problems
5. Eigenvalue Assignment by State Feedback
6. State Observers
7. Stochastic Optimal State Estimation
8. Concluding Comments
A 5.1. Stochastic Processes and Linear Systems
Problems

Chapter VI : SELF-TUNING CONTROL :
1. Introduction
2. The Identification Problem
3. The Principle of Least Squares
4. Recursive Least Squares Algorithm
5. Minimum-Variance Prediction
6. Minimum-Variance Control
7. Self-Tuning Regulators
8. Concluding Comments
Problems

Chapter VII : MECHANIZATION OF CONTROL Algorithms USING MICROPROCESSORS :
1. Introduction
2. General Description of Microcontrollers
3. Digital Quantization
4. Microprocessor-Based Position Control System-A Case Study
5. Concluding Comments
A 7.1. Intel 8085 CPU
A 7.2. Support Chips

Chapter VIII : MICROPROCESSOR-BASED Temperature CONTROL SYSTEM-A CASE Study :
1. Introduction
2. The Process Model
3. The Control Algorithm
4. Hardware Mechanization
5. System Software
6. Concluding Comments
A 8.1. Support Chips

Chapter IX : STEPPING MOTORS AND THMR INTERFACING TO MICROPROCESSORS :
1. In-reduction
2. Constructional Features of Stepping Motors
3. Important Parameters of Stepping Motors
4. Operational Features of Stepping Motors
5. Stepping Motor Drive Circuits
6. Interfacing of Stepping Motors to Micron, occssors
7. Microprocessor Control of a Manipulator Arm (Robot1)-A Case Study
8. Concluding Comments
A 9.1. Support Chips

Reference