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JACIII Vol.24 No.1 pp. 12-25
doi: 10.20965/jaciii.2020.p0012
(2020)

Paper:

Observer-Based Piecewise Multi-Linear Controller Designs for Nonlinear Systems Using Feedback and Observer Linearizations

Tadanari Taniguchi* and Michio Sugeno**

*Tokai University
4-1-1 Kitakaname, Hiratsuka, Kanagawa 259-1292, Japan

**Tokyo Institute of Technology
4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan

Received:
June 14, 2019
Accepted:
August 20, 2019
Published:
January 20, 2020
Keywords:
observer-based controller, piecewise multi-linear model, feedback linearization, observer linearization problem
Abstract

This paper proposes observer-based piecewise multi-linear controllers for nonlinear systems using feedback and observer linearizations. The piecewise model is a nonlinear approximation and fully parametric. Feedback linearizations are applied to stabilize the piecewise multi-linear control system. Furthermore, observer linearizations are more conservative in modeling errors compared with feedback linearizations. In this paper, we propose robust observer designs for piecewise multi-linear systems. Moreover, we design piecewise multi-linear controllers that combine the robust observer with various performance such as a regulator and tracking controller. These design methods realize a separation principle that allows an observer and a regulator to be designed separately. Examples are demonstrated through computer simulation to confirm the feasibility of our proposals.

Cite this article as:
T. Taniguchi and M. Sugeno, “Observer-Based Piecewise Multi-Linear Controller Designs for Nonlinear Systems Using Feedback and Observer Linearizations,” J. Adv. Comput. Intell. Intell. Inform., Vol.24, No.1, pp. 12-25, 2020.
Data files:
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Last updated on Feb. 17, 2020