GTU BE/B.Tech 2019 Winter Question Papers || Gujarat Technological University
Subject Name: Advance Control Theory
Date: 29/11/2019
Time: 02:30 PM TO 05:00 PM
Total Marks: 70
Subject Code: 2181705
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER- VIII (New) EXAMINATION — WINTER 2019Subject Name: Advance Control Theory
Date: 29/11/2019
Time: 02:30 PM TO 05:00 PM
Total Marks: 70
--- Content provided by FirstRanker.com ---
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
| Q.1 | (a) Describe Discretization of continuous time system. | 03 |
| (b) Draw and explain the block diagram of linear time-invariant discrete time control system in state space. | 04 | |
| (c) What is nonlinear system? Classify various types of nonlinearities | 07 | |
| OR | ||
| Q.2 | (a) Explain the describing function analysis method. | 03 |
| (b) Explain phase plane method & construction of phase trajectories. | 04 | |
| (c) Define local stability, asymptotically stable, asymptotically stable at large and limit cycles for nonlinear system | 07 | |
| OR | ||
| Q.3 | (a) Consider the system described by --- Content provided by FirstRanker.com --- Y (k)-0.6y(k-1)-0.81y(k-2)+0.67y(k-3)-0.12y(k-4)=x(k)Where x(k) is the input and y(k) is the output of the system. Determine the stability of the system. | 03 |
| (b) Write a short note on fuzzification. | 04 | |
| (c) Comment on membership function and its types. Explain in details applications of fuzzy logic to control systems. | 07 | |
| OR | ||
| Q.4 | (a) Brief about stability in the z-domain. | 03 |
| (b) How the PID controller can be implemented with a digital system? | 04 | |
| (c) Define singular point. Explain in detail Derive describing function for a relay with dead zone. | 07 | |
| OR | ||
| Q.4 | (a) Explain relative gain array formultivariable system. | 03 |
| (b) Obtain the phase trajectory for the system shown below having relay with dead zone non linearity. Compare and comment with respect to the phase trajectory obtained with dead zone nonlinearity absent in the same system. This download link is referred from the post: GTU BE/B.Tech 2019 Winter Question Papers || Gujarat Technological University --- Content provided by FirstRanker.com --- |