Jawaharlal Nehru Technological University Anantapur 2010-1st Sem B.Tech Code :R7411304 1 IV (R07) Regular s, ember/ember ADAPTIVE CONTROL SYSTEMS - Question Paper

Code :R7411304 1
IV B.Tech I semester (R07) Regular Examinations, November/December 2010
ADAPTIVE CONTROL SYSTEMS
(Electronics & Control Engineering)
Time: three hours Max Marks: 80
ans any 5 ques.

1. (a) What is an adaptive controller? discuss any 2 applications of adaptive controllers.
(b) discuss clearly about the formulation of adaptive control issue. Compare feedback
control with adaptive control.
2. (a) State the theorem which stipulates conditions for estimating parameters in lowest square
estimate method . Also discuss the signi¯cance of recursive lowest square RLS estimation.
(b) discuss the subsequent modeling methods:
i. FIR model.
ii. Continuous transfer function models.
3. (a) Draw the °ow chart and discuss indirect self Tuning regulator a (SIR) algorithm .State
how this can be used for continuous time systems .
(b) Derive the relations for model subsequent design . State the causality conditions.
4. (a) elaborate the sub optional control strategies for stochastic adaptive control? discuss any
one of them.
(b) explain how the analysis of parametric adaption algorithm carried out in a stochastic
environment.
5. (a) discuss lyapunor stability also discuss positive de¯nite and identical de¯nite functions.
(b) discuss the methods for constructing lyapunor functions.
6. discuss the design procedure for minimum variance control in adaptive control system design.
7. Consider the system G(s) = G1(s)G2(s)
G1(s) = b
s+a ;G2(s) = c
s+d
Where `a' and `b' are unknown parameters and `c' and `d' are known. Construct discrete-time
direct and indirect self-Turing algorithms for the partially known system.
8. write short notes on:
(a) small gain theorem
(b) Adaptive system using lyspunav design
(c) kalman's method

Earning:   Approval pending.