Title: Importance of Extending Nyquist Servomechanism Analysis to Include Transient Response
Abstract: This article stresses the importance of extending the Nyquist servomechanism analysis to include the transient response and points out one method of obtaining the transient response from the conventional frequency response data which is usually the end point of the Nyquist analysis. The basis for the present of t humb (phase and gain margins) used when only frequency data are considered is reviewed briefly by comparing the characteristics of a simple feedback servomechanism with those of a linear second-order system. I t is shown that , although these rules are pointed toward obtaining a good transient response by considering the system frequency characteristics, they are often inadequate. Once this is realized, the value of actually obtaining the transient response is apparent. The method outlined for obtaining the transient response to a given input consists of representing the input as a Fourier series, operating on the series with the system transfer function, and summing the resulting series. Response to a step input is given as an example, and the necessary procedure for carrying out the analysis is given and discussed.
Publication Year: 1951
Publication Date: 1951-01-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 6
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