NDLI: Indirect adaptive nonlinear control of discrete-time systems containing a deadzone

Content Provider	IEEE Xplore Digital Library
Author	Recker, D.A. Kokotovic, P.V.
Copyright Year	1993
Description	Author affiliation: Coordinated Sci. Lab., Illinois Univ., Urbana, IL, USA (Recker, D.A.)
Abstract	In this paper, we develop an indirect adaptive output feedback control result which applies to discrete-time systems containing a deadzone nonlinearity and linear dynamics. The deadzone nonlinearity is significant since it is common in systems containing hydraulic or pneumatic valves, electronic circuits, and temperature regulation circuits. A plant parametrization that is linear in a set of unknown parameters is first developed. This is accomplished by forcing the regional descriptions of the deadzone to be entirely contained in the definition of a regressor. This is convenient for estimation since adaptation for the parameters of the separate regions of the nonlinearities is automatically accommodated by the regressor. Unfortunately, this parametrization necessitates multiple estimates of the zeros of the plant. To overcome the difficulty of designing a feedback/feedforward controller given multiple estimates of the zeros, we implement a nonlinear "zero resolving" prefilter. This prefilter to the plant allows one to design a feedback/feedforward controller based on one set of zeros.<>
Starting Page	2647
Ending Page	2653
File Size	674097
Page Count	7
File Format	PDF
ISBN	0780312988
DOI	10.1109/CDC.1993.325676
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1993-12-15
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Programmable control Adaptive control Nonlinear control systems Control systems Output feedback Linear feedback control systems Valves Electronic circuits Temperature Automatic control
Content Type	Text
Resource Type	Article

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