What's the difference between two command?
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Hello,
In general, the command of nyquist plot is nyquist(sys,omega), but an example of textbook the command of nyquist is nyquist(A,B,K,0,1,w), where (A,B : matrices from state space equation, K : control gain, w : frequency range).
What's the difference between the two commands?
1 Commento
Dyuman Joshi
il 27 Gen 2024
Could you please share the example where that particular syntax is used?
Risposte (1)
Paul
il 27 Gen 2024
That's the old, obsolete form of nyquist() that was used for state space models before the Control System Toolbox introduced lti objects like ss and tf.
f = which('nyquist','-all')
dbtype(f{1},'35:58')
4 Commenti
Sam Chak
il 27 Gen 2024
The original Nyquist code was written in 1985.
% J.N. Little 10-11-85
% Revised ACWG 8-15-89, CMT 7-9-90, ACWG 2-12-91, 6-21-92,
% AFP 2-23-93, 10-1-94
% Copyright 1986-2003 The MathWorks, Inc.
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