# Jawaharlal Nehru Technological University Anantapur 2010-1st Sem B.Tech Code :R7411304 3 IV (R07) Regular s, ember/ember ADAPTIVE CONTROL SYSTEMS - Question Paper

Wednesday, 29 May 2013 07:40Web

Code :R7411304 3

IV B.Tech I semester (R0

**7)**Regular Examinations, November/December 2010

ADAPTIVE CONTROL SYSTEMS

(Electronics & Control Engineering)

**Time:**three hours

**Max Marks**: 80

ans any 5 ques.

All ques. carry equal marks

**1.**

**(**discuss the term adaptiv

**a)****e.**What is the need for adaptive control? discuss with a simple

example.

**(**explain 2 degrees of freedom control of a system applied to a system with parameter

**b)**variation.

**2.**

**(**discuss how recursive lowest squares (RLS) method is used to model the system with FIR

**a)**¯lter.

**(**Write a short note on transfer function modeling of discrete and continuous systems.

**b)****3.**

**(**What is robust high gain feedback control? discuss the steps involved in designing robust

**a)**high-gain control.

**(**Consider a system with the transfer function G(s) = k

**b)**s+1 where the gain `k' may change

in the range 0.1 to

**10.**Design a servo using soas principle so that the closed loop transfer

function is G(s) = 1

s2+s+1 independent of the process gain.

**4.**

**(**discuss indirect LQG-STR algorithm based spectral factorization.

**a)****(**discuss about indirect LQG-STR algorithm based on the ricalti formula.

**b)****5.**Consider the ¯rst order system y(k+

**1)**= ay(k)+ u(k), when `a' is an open loop pol

**e.**define

lyapunov's design to ¯nd the control legal regulations and adaptive legal regulations in order that the pole of `@' is moved

to a new desired position `@m'.

**6.**Consider the process G(s) = 1

s(s+@) where `@' is unknown parameter. Determine a controller

that con provide the closed loop system Gm(s) = w2

s2+2±ws+w2 : Determine MRAS based on gradient

theory.

**7.**

**(**discuss 2 kinds zeigler Nichols of tuning of PI/PID controllers.

**a)****(**A process is tested with a relay in closed loop. The ultimate gain for exhibiting the

**b)**oscillation 25 and the ultimate frequency is 5khz. Determine the parameters of PID

controller to be used with the system.

**8.**Write short notes on:

**(**Gain scheduling

**a)****(**Auto tuning based on relay feed back

**b)****(**Robust high gain feed back control

**c)****(**Dual control.

**d)**Earning: Approval pending. |