The Use of Characteristic Functions and Characteristic Values in Feedback Systems Analysis |
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| Authors: | A. G. J. MacFarlane |
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| Affiliation: | Department of Electrical Engineering and Electronics , University of Manchester Institute of Science and Technology , Manchester, England |
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| Abstract: | The role played by the concepts of characteristic values and characteristic functions in modern control theory is briefly outlined. It is then shown that, by introducing the idea of a characteristic transfer function, the classical stability theorem of Nyquist can be extended to the general multivariable feedback system. |
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