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Optimal tuning for PI controller. (English) Zbl 0941.93021
A method is presented for tuning PI controllers based on constraining the Nyquist locus of the loop transfer function to lie to the right of a vertical line in the left half complex plane. The process is assumed to be stable in open loop. An integral error criterion is used for optimization, apparently because of computational convenience. The method requires a frequency domain representation of the process.
Reviewer: E.Boje (Durban)
MSC:
93B51Design techniques in systems theory
93C80Frequency-response methods
93B52Feedback control