Title :
Closed-loop estimation of robustness margins by the relay method
Author :
Longchamp, Roland ; Piguet, Y.
Author_Institution :
Inst. d´´Autom., Ecole Polytech. Federale de Lausanne, Switzerland
Abstract :
In this paper, two relay experiments are carried out on the closed-loop system to estimate both the phase and amplitude margins. Other key quantities, such as the delay margin, can also be obtained from these experiments at no extra cost. Use of the proposed methods for automatic tuning and adaptive control is discussed
Keywords :
adaptive control; closed loop systems; delays; frequency estimation; limit cycles; phase estimation; relay control; stability; transfer functions; adaptive control; amplitude margins; automatic tuning; closed-loop system; delay margin; limit cycles; phase margins; relay method; robustness margins; transfer function; Amplitude estimation; Automatic control; Frequency; Limit-cycles; Open loop systems; Phase estimation; Relays; Robustness; Transfer functions; Tuning;
Conference_Titel :
American Control Conference, Proceedings of the 1995
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2445-5
DOI :
10.1109/ACC.1995.532336
