Control Systems

Contain

Unit I : Basics of Control Systems

• Introduction
• Types of Control Systems : Open loop & Closed loop
• Feed back Control System
• Effect of Feed Back
• Modeling of Simple Electrical & Mechanical Systems Using Differential Equations
• Concept of Transfer Function
• Characteristics Equation, Poles and Zeros 
• Block Diagram Algebra
• Control system Components : A.C. & D.C. Servomotors , Stepper Motor 

Unit II : Time Domain Analysis

• Type and Order of the Control Systems
• Types of Standard Inputs
• Response of First Order System to Step, Ramp and Parabolic Inputs
• Response of Second Order System to Step Input
• Time Domain Specifications of Second Order Systems
• Steady State Error and Error Coefficients
• Effects of addition of Poles and Zeros 

Unit III : Stability

• Concept of Stability
• Absolute ,Relative
• Marginal and Unstable Stability analysis in S Plane
• Dominant Poles and Zeros
• Routh-Hurwitz Criterion
• Concept of Root Locus 

Unit IV : Frequency Domain Analysis 

• Need of Frequency Domain Analysis
• Correlation between Time & Frequency Domain
• Frequency Domain Specifications , Bandwidth
• Bode Plot
• Construction of Bode Plot
• Gain and Phase Margin
• Determination of Relative Stability
• Nyquist Stability Criterion
• Relative Stability Using Nyquist Criterion 

Unit V : State Space Analysis

Advantages of State Space Analysis over Classical Control Concept of State , State Variables and State Model , State Space Representation using State Model, State Transition Matrix and its properties, Solution of State Equations for LTI System , Concept of Controllability and Observability 

Unit VI : Digital Control Systems

Introduction, Advantages over analog control system, Sampled Data Control System, Transfer Function of Digital Control System, Step Response (First & Second Order Systems only), Introduction to Digital PID Controller, Introduction to PLC: Block schematic, PLC addressing, any one application of PLC using Ladder diagram. Concept of Offset ,P, PI , PD and PID Characteristics 

Books

Text Books : 

1. Katsuhiko Ogata, Modern Control Engineering, Fifth Edition, PHI Learning Private Limited, New Delhi, 2010 

2. I.J. Nagrath , M.Gopal, Control Systems Engineering, Fifth Edition, New Age International Publishers, New Delhi, 2007 

Reference Books : 

1. Curtis D Johnson, Process Control Instrumentation Technology, Eighth Edition, PHI Private Limited, New Delhi, 2011 

2. Richard C. Drof , Robert N. Bishop, Modern Control Systems, Addison Wesley Publishing Company, 2001 

3. B.C.Kuo, Digital Control Systems, Second Edition, Oxford University Press, New York, 1992