EE2253 CONTROL SYSTEMS Lecture Notes for Common to EEE, EIE & ICE Departments - by R.Anirudhan

EE2253 CONTROL SYSTEMS Lecture Notes for Common to EEE, EIE & ICE Departments


EE2253 Lecture Notes

Syllabus :

UNIT I SYSTEMS AND THEIR REPRESENTATION
Basic elements in control systems – Open and closed loop systems – Electrical analogy of
mechanical and thermal systems – Transfer function – Synchros – AC and DC servomotors – Block
diagram reduction techniques – Signal flow graphs.

UNIT II TIME RESPONSE
Time response – Time domain specifications – Types of test input – I and II order system response –
Error coefficients – Generalized error series – Steady state error – P, PI, PID modes of feed back
control.

UNIT III FREQUENCY RESPONSE
Frequency response – Bode plot – Polar plot – Determination of closed loop response from open
loop response – Correlation between frequency domain and time domain specifications.

UNIT IV STABILITY OF CONTROL SYSTEM
Characteristics equation – Location of roots in S plane for stability – Routh Hurwitz criterion – Root
locus construction – Effect of pole, zero addition – Gain margin and phase margin – Nyquist stability
criterion.

UNIT V COMPENSATOR DESIGN
Performance criteria – Lag, lead and lag-lead networks – Compensator design using bode plots.



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