Answered: (f) More than two unstable open-loop…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Question

Each item below describes key characteristics of a particular system (that is, a plant transfer function).

For each system, describe the effect of proportional control on the stability of the closed-loop system.

Specifically, 1) what can you say for small gains, and 2) what for large gains? (E.g., stable, unstable, inconclusive.) Provide a short explanation of your answers, with sketches as necessary.

(f)
More than two unstable open-loop poles, DC gain is 1.25, with following Nyquist plot:
2
-1
-2
-3
-2
-1
0
1
2
Re{L(io)
{(o)u

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