An instability indicator for expert control
- 1 August 1986
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Control Systems Magazine
- Vol. 6 (4), 14-17
- https://doi.org/10.1109/mcs.1986.1105105
Abstract
An instability indicator is proposed for use in supervisory/expert control systems. The indicator-which consists of a trend indicator, a rectifier, and a smoother-observes the plant output. The trend indicator generates the difference between two time averages of different final horizons and is implemented as a pair of discrete moving-average or first-order exponential filters. The rectifier is an absolute value or square operation, while the smoother is a moving-average or exponential filter, with a longer horizon/time constant. The instability alarm is triggered on the basis of the amplitude of the indicator output.Keywords
This publication has 2 references indexed in Scilit:
- Adaptive systems, lack of persistency of excitation and bursting phenomenaAutomatica, 1985
- Theory and applications of adaptive control—A surveyAutomatica, 1983