Basic elements in control systems: – Open and closed loop systems – Electrical analogy of mechanical and thermal systems – Transfer function – AC and DC servomotors – Block diagram reduction techniques – Signal flow graphs.
Time response: – Time domain specifications – Types of test input – I and II order system response – Error coefficients – Generalized error series – Steady state error – Root locus construction- Effects of P, PI, PID modes of feedback control –Time response analysis.
Frequency response: – Bode plot – Polar plot – Determination of closed loop response from open loop response - Correlation between frequency domain and time domain specifications.
Characteristics equation – Routh Hurwitz criterion – Nyquist stability criterion- Performance criteria – Effect of Lag, lead and lag-lead compensation on frequency response-Design of Lag, lead and laglead compensator using bode plots.
Concept of state variables – State models for linear and time invariant Systems – Solution of state and output equation in controllable canonical form – Concepts of controllability and observability.
Reference Book:
1. Katsuhiko Ogata, “Modern Control Engineering”, Pearson, 2015. 2. Richard C.Dorf and Bishop, R.H., “Modern Control Systems”, Pearson Education,2009. 3. John J.D., Azzo Constantine, H. and Houpis Sttuart, N Sheldon, “Linear Control System Analysis and Design with MATLAB”, CRC Taylor& Francis Reprint 2009. 4. Rames C.Panda and T. Thyagarajan, “An Introduction to Process Modelling Identification and Control of Engineers”, Narosa Publishing House, 2017. 5. M.Gopal, “Control System: Principle and design”, McGraw Hill Education, 2012. 6. NPTEL Video Lecture Notes on “Control Engineering “by Prof. S. D. Agashe, IIT Bombay.
Text Book:
1. Nagarath, I.J. and Gopal, M., “Control Systems Engineering”, New Age International Publishers, 2017. 2. Benjamin C. Kuo, “Automatic Control Systems”, Wiley, 2014.
