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G1094 Pages: 3

Derive an expression for the maximum percentage overshoot of a second order under damped
system.

PART B
Answer any two full questions, each carries 15 marks.
What are frequency domain specifications? Define any three.
A unity feedback control system has an open loop transfer function

G(s)=K(s+9)/ s(s+3)(s+5).Sketch the root locus.

What are Bode plots ? What are its advantages. How is stability determined from Bode plots.

Plot the Bode diagram for the following transfer function
‏ریہ‎ =KS?/ (10.25) (1+0.02S)

Determine the value of K for a gain cross over frequency of 20 rad/sec.

Draw the Nyquist plot for the system whose open loop transfer function is

க்‌

னன்‌ எவரம

. Determine the range of K for which the closed loop system is

stable.

The open loop transfer function of certain unity feedback control system is given by

G(s) = . It is desired to have the phase margin to be at least 33° and the velocity

s(s+4)(s+80)
error constant 19, = 30 per sec. Design a phase lag series compensator.

PART C
Answer any two full questions, each carries 20 marks.
Construct the state model for the system described by

‎ധി 3: + 2 [மம்‌‏ عل . برو[ 6 + برك + 7 + نز

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