AERONAUTICAL ENGINEERING


LINEAR SYSTEM ANALYSIS AND CONTROL


UNIT-I       INTRODUCTION & SYSTEM MODELLING                                        

Introduction, History of control systems, Needs and types of Mathematical models, Definitions of different control techniques - "Robust, Adaptive, Optimal &Intelligent control system", Transfer function, State variable Modelling, Conversation between state space and transfer function, Nonlinearities, Linearization.

UNIT-II          TIME DOMAIN ANALYSIS                                                            

Standard test signals, Time response of first order systems- Characteristic equation of feedback control systems, Transient response of second order systems - Time domain specifications - Steady state errors and error constants-effects of PD, PI systems. Concepts of stability - Routh's stability criterion - Root locus technique.

UNIT-III        FREQUENCY RESPONSE ANALYSIS                   

                                 

Introduction, Frequency domain specifications and transfer function from the Bode diagram - Phase margin and gain margin - Stability analysis from Bode Plots, Nyquist plot stability analysis.

UNIT-IV        CONTROL DESIGN TECHNIQUE                                                    

Compensation techniques - Lag, Lead, and Lead-Lag controllers design in time domain, PID controllers.

UNIT-V        STATE SPACE ANALYSIS:                                                                      

Concepts of state, state variables and state models, derivation of state models from block diagrams, diagonalization - solving the time invariant state equations - State transition matrix and its properties - Concepts of controllability and observability, feedback, Pole placement.