Nyquist Analysis

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Nyquist Analysis
1010605 Nyquist Analysis
INTRODUCTION Nyquist analysis, a frequency response method, is essentially a graphical procedure for determining absolute and relative stability of closed-loop control systems. Information about stability is available directly from a graph of the open-loop frequency response function GH(ω), once the feedback system has been put into canonical form. Nyquist methods are applicable to both continuous and discrete-time control systems, and the methodological development for Nyquist analysis is presented here for both types of systems, with some emphasis given to continuous syst…
Joseph J. DiStefano, III, PhD; Allen R. Stubberud, PhD; Ivan J. Williams, PhD: Schaum's Outline of Feedback and Control Systems, Second Edition. Nyquist Analysis, Chapter (McGraw-Hill Professional, 2014), AccessEngineering Export