03000EE304052002

B Pages: 2
Reg No.: Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
Sixth Semester B.Tech Degree Regular and Supplementary Examination July 2021
Course Code: EE304
Course Name: ADVANCED CONTROL THEORY
Max. Marks: 100 Duration: 3 Hours
PARTA
Answer all questions, each carries 5 marks. Marks

1 Sketch the realisation of a phase lead compensator and derive its transfer (5)

function.
2 Identify the dominant poles of the unity feedback system with open loop (5)

transfer function G(s) = ನಾರಿನ
3 Compute the solution to the state equation ೫ = 8 a x, x(0) = [|| (5)
4 Sketch the block schematic of a system controlled by a digital controller and (5)

list the additional components that appears in a system with digital controller.
5 Distinguish between inherent and intentional nonlinearities. Give examples (5)
6 Define describing function? What is the assumption that makes the application (5)

of describing function analysis?
7 List the characteristics that are observed in nonlinear system. (5)
8 Identify the equilibrium points for the system x, = ‏ريوع‎ छ = -0.522 - (5)

51712८1).

PART B
Answer any two full questions, each carries 10 marks.

9 Design a suitable compensator for the unity feedback system with transfer (10)

function G(s) = ಸ್‌ to satisfy the following specifications so that the

gain cross over frequency is approximately 1 rad/s. Velocity error constant

atleast 105 1. Phase margin greater than 40°
10 Design a suitable compensator for the system G(s) = ಷ್‌ to achieve an (10)

overshoot less than 20%, settling time less tnan 1.5s for unit step input.

Velocity error constant atleast 581.

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