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This paper deals with the problem of robust tracking control with adaptation mechanism. A linear time-invariant system with time-varying ellipsoidal uncertainty is considered. The proposed controller affinely depends on the estimations of parameters, which are adjusted on-line according to the error between the state trajectory of the plant and that of target model. The application of this approach...
This paper discusses the adaptive robust guaranteed cost tracking control problem of linear systems, with time-varying uncertainties. The bounds of varying uncertainty ellipsoidal are obtained by set membership identification method. The proposed adaptive robust controller consists of a constant gain determined by the nominal system and a variable gain tuned by the designed adaptive laws. The application...
This paper discusses the yaw control of small-size unmanned helicopter. The yaw dynamics of helicopter involve input nonlinearity, time-varying parameters and the couplings between main and tail rotor. With respect to such a complicated dynamics, the normal PID control is difficult to realize good tracking performance while maintaining stability and robustness simultaneously. In this paper, a valid...
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