Title :
Deadzones and noise in parameter-adaptive stabilization
Author_Institution :
Centre for Syst. & Control Eng., Exeter Univ., UK
Abstract :
The problem of noise sensitivity in universal parameter-adaptive control schemes subject to bounded noise on the output channel is addressed. The solution procedure is completely defined for the single input single output (SISO) case with output feedback for uniform rank minimum phase systems and the simplest controller form generated by Byrnes and Willems. Given a bound on the output noise, it is shown how a differential inequality approximation to the I/O dynamics and a modified control scheme incorporating a deadzone to inhibit adaptation when the noise dominates the measured data can be used to guarantee L 2-type stability of the resultant output response to a well defined ball centered on the origin
Keywords :
adaptive control; feedback; sensitivity analysis; stability; L2-type stability; bounded noise; deadzone; differential inequality approximation; noise sensitivity; output feedback; output response; parameter-adaptive stabilization; single input single output; uniform rank minimum phase systems; Adaptive control; Control engineering; Control systems; Convergence; Noise measurement; Noise reduction; Output feedback; Pollution measurement; Programmable control; Stability;
Conference_Titel :
Decision and Control, 1992., Proceedings of the 31st IEEE Conference on
Conference_Location :
Tucson, AZ
Print_ISBN :
0-7803-0872-7
DOI :
10.1109/CDC.1992.371226
