Automatic tuning of simple regulators with specifications on phase and amplitude margins. (English) Zbl 0543.93039

Åström, K. J.; Hägglund, T.

Automatica 20, 645-651 (1984).

Summary: The paper describes procedures for automatic tuning of regulators of the PID type to specifications on phase and amplitude margins. The key idea is a simple method for estimating the critical gain and the critical frequency. The procedure will automatically generate the appropriate test signal. The method is not sensitive to modelling errors and disturbances. It may be used for automatic tuning of simple regulators as well as initialization of more complicated adaptive regulators.

MSC:

93C40	Adaptive control/observation systems
34C05	Topological structure of integral curves, singular points, limit cycles of ordinary differential equations
93B30	System identification
93B35	Sensitivity (robustness)
93B40	Computational methods in systems theory (MSC2010)
93C10	Nonlinear systems in control theory

Keywords:

describing function; automatic tuning; adaptive regulators

References:

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