EE 250

Control Systems




Modeling of physical systems: time-domain, frequency-domain and state-variable models; block diagram, signal flow graph; time and frequency response of first and second order systems; control system characteristics: stability, sensitivity, disturbance rejection and steady-state accuracy; stability analysis: Routh-Hurwitz test, relative stability, root locus, Bode and Nyquist plots; controller types: lag, lead, lag-lead, PID; controller design based on root-locus and frequency response plots; modern design techniques: canonical state-variable models, equivalence between frequency and time-domain representations, diagonalisation, controllability and observability, pole placement by state feedback, state feedback with integral control, observer and observer based state feedback control.


1.     N. S. Nise, Control Systems Engineering, 6th edition. Wiley, 2011.

2.     K. Ogata, Modern Control Engineering, 5th edition. Prentice Hall India, 2010.

3.     G. F. Franklin, J. D. Powell, and A. E. Emami-Naeini, Feedback Control of Dynamic Systems, 7th edition. Pearson, 2014.


1.     M. Gopal, Control Systems, 3rd edition. Tata McGraw-Hill, 2008.

2.     B. C. Kuo, Automatic Control Systems, 8th edition. Wiley, 2002.