Cover -- Preface -- Contents -- Chapter 1 Laplace Transformation -- 1.1 Introduction -- 1.2 Laplace Transform of Some Useful Functions -- 1.3 Some Properties of Laplace Transform -- 1.4 Inverse Laplace Transform -- Chapter 2 Mathematical Modelling -- 2.1 Introduction -- 2.2 Basic Control System -- 2.3 Classification of Control Systems -- 2.4 Comparison Between the Open Loop and Closed Loop Control Systems -- 2.5 Thermal System -- 2.6 Fluid System -- 2.7 Transfer Function -- 2.7.1 Transfer Function of Linear System -- 2.8 Block Diagram Reduction Technique -- 2.8.1 Rules in Block Diagram Reduction Technique -- 2.8.2 Points to be Remembered while Doing the Block Diagram Reduction -- 2.9 Signal Flow Graph -- 2.9.1 Rules Followed in Construction of Signal Flow Graph -- 2.9.2 Construction of Signal Flow Graph -- 2.9.3 Mason's Gain Formula -- 2.9.4 Construction of Signal Flow Graph from a Transfer Function -- 2.9.5 Construction of Signal Flow Graph from Block Diagram -- 2.10 Physical Systems -- 2.11 Analogous Systems -- 2.12 Importance of Electrical Analog Systems -- Short Questions and Answers -- Objective Type Questions -- Exercise -- Chapter 3 Feedback Characteristic of Control System -- 3.1 Introduction -- 3.2 Feedback Characteristics of Control Systems -- 3.2.1 Reduction of Parameter Variation by Feedback -- 3.2.2 Effect of Feedback on Sensitivity -- 3.2.3 Control of System Dynamics by Feedback -- 3.2.4 Effects of Feedback on Disturbance Signal -- 3.2.5 The Effect of Feedback on Gain of the System -- 3.3 Effects of Feedback in Control System -- 3.4 Control System Components -- 3.4.1 Servomotors -- 3.4.1.1 DC Servomotors -- 3.4.1.2 AC Servomotors -- 3.4.2 Synchros -- 3.4.3 Potentiometers -- 3.4.4 Tachometers (Tacho Generators) -- 3.4.4.1. DC tachometer -- 3.4.4.2 AC tachometer -- 3.4.5 Magnetic Amplifier -- Short Questions and Answers.

Objective Type Questions -- Exercise -- Chapter 4 Time Response Analysis -- 4.1 Introduction -- 4.2 Time Response of Different Inputs -- 4.3 Steady State Error -- 4.4 Transient Response of the System -- 4.4.1 First Order System -- 4.4.1.1 Unit step input -- 4.4.1.2 Unit ramp input -- 4.4.1.3 Unit parabolic input -- 4.4.1.4 Unit impulse input -- 4.4.1.5 Applications of first order systems -- 4.5 Characteristic Equation of Control Systems -- 4.6 Transient Response of Second Order System -- 4.6.1 Analysis -- 4.6.2 Effect of Adding a Zero to a Second Order System -- 4.6.3 Application of Second Order System -- 4.7 Time Domain Specifications -- 4.7.1 Computation of Time Domain Specifications -- 4.8 Steady State Response -- 4.9 Steady State Error and Error Constants -- 4.10 Generalised Error Coefficients (OR) Dynamic Error Coefficients -- 4.11 Controllers -- Short Questions and Answers -- Objective Type Questions -- Exercise -- Chapter 5 Stability Analysis and Root Locus Technique -- 5.1 Concept of Stability -- 5.2 Routh and Hurwitz Stability Criterions -- 5.2.1 Causes for Instability -- 5.2.2 Absolute Stability and Relative Stability -- 5.2.3 Hurwitz Stability Criterion -- 5.2.4 Routh Stability Criterion -- 5.2.5 Difficulties and Remedies -- 5.2.6 Relative Stability -- 5.2.7 Disadvantages of Routh Criterion -- 5.3 Root Locus Technique -- 5.3.1 Basic Concept -- 5.4 The General Procedure for Determining the Root Loci From Loop Transfer Function -- 5.5 The Effects of Addition of Pole on Root Locus -- 5.5.1. Stability Analysis using Root Locus -- 5.6 Root Contours -- 5.7 Root Sensitivity -- Short Questions and Answers -- Objective Type Questions -- Exercise -- Chapter 6 Frequency Domain Analysis -- 6.1 Introduction -- 6.2 Frequency Domain Specifications -- 6.3 Correlation Between Time Domain and Frequency Domain Specifications -- 6.4 Bode Plots.

6.5 Relative Stability From Bode Plots -- 6.6 System Identification From the Bode Plot -- 6.7 Advantages of Frequency Domain Analysis -- Short Questions and Answers -- Objective Type Questions -- Exercise -- Chapter 7 Polar and Nyquist Plots -- 7.1 Polar Plots -- 7.1.1 Polar Plots for Typical Transfer Functions -- 7.1.2 Computation of Frequency (ω) at a Given Point on the Polar Plot -- 7.1.3 Procedure to Sketch the Polar Plot -- 7.1.4 Calculation of Gain Crossover Frequency and Phase Crossover Frequency -- 7.1.5 Calculation of Gain Margin and Phase Margin from Polar Plot -- 7.2 Inverse Polar Plot -- 7.3 Effect of Adding A Pole (OR) Zero to A Transfer Function on Its Polar Plot -- 7.4 Nyquist Plots -- 7.4.1 Procedure for Construction of Nyquist Plot -- 7.5 M Circle and N Circle -- Short Questions and Answers -- Objective Type Questions -- Exercise -- Chapter 8 Compensation -- 8.1 Introduction -- 8.2 What is a Compensator? -- 8.3 Modes of Connections of Compensators -- 8.3.1 Series Compensator -- 8.3.2 Parallel Compensation -- 8.3.3 Series-Parallel Compensation -- 8.4 Types of Compensator -- 8.5 Realization of Basic Electrical Compensators -- 8.5.1 Lead Compensator -- 8.5.2 Lag Compensator -- 8.5.3 Lag-lead Compensator -- 8.6 Comparison of Lead and Lag Compensation -- Short Questions and Answers -- Objective Type Questions -- Exercise -- Chapter 9 State Variable Analysis -- 9.1 Introduction -- 9.2 Advantages of State Variable Techniques -- 9.3 Basic Definitions Concerning State Variable Approach -- 9.4 State Variable Representation -- 9.5 State Equations -- 9.6 State Model of Linear System -- 9.7 Electrical System -- 9.7.1 Formulation of State Equations -- 9.8 Diagonalization (OR) Canonical Form (OR) Similar Transformation -- 9.9 State Variable Representation Using Phase Variables -- 9.10 Solution of State Equations.

9.10.1 Properties of State Transition Matrix -- 9.11 Derivation of Transfer Function From State Model -- 9.12 Caley-Hamilton Theorem -- 9.13 Controllability and Observability -- Short Questions and Answers -- Objective Type Questions -- Exercise -- Appendix -- Index.