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Why is the no encirclement about(-1+jo)?

Why is the no encirclement about(-1+jo)?

Introductory Circuit Analysis (13th Edition)
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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Why is the no encirclement about(-1+jo)?
Given data: Explain how the Nyquist stability criterion can be used to determine the stability of a closed-loop feedback system. Formulate the criterion for system with no right-half plane open-loop poles. Q4 (a) Continued overleaf Page 4 of 10 Step 2 Z70 Unstable system N= P-z (ACW) anticlock wise If Nyquist contowr is elockwise c) P=O Pen loop Right half Plane (ii) ZE closed loop Right half Plane N= No. 0# encisecle ment about (-1+jo) if P=0 N=-z (ACW) + no no. Of encioclem ent is in clock wise." then I2%3DD)Stable closed System N=Z
Transcribed Image Text:Given data: Explain how the Nyquist stability criterion can be used to determine the stability of a closed-loop feedback system. Formulate the criterion for system with no right-half plane open-loop poles. Q4 (a) Continued overleaf Page 4 of 10 Step 2 Z70 Unstable system N= P-z (ACW) anticlock wise If Nyquist contowr is elockwise c) P=O Pen loop Right half Plane (ii) ZE closed loop Right half Plane N= No. 0# encisecle ment about (-1+jo) if P=0 N=-z (ACW) + no no. Of encioclem ent is in clock wise." then I2%3DD)Stable closed System N=Z
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