Design and analysis of hybrid control schemes for sandwich nonlinear systems

Author

Taware, Avinash ; Tao, Gang

Author_Institution

Dept. of Electr. Eng., Virginia Univ., Charlottesville, VA, USA

Volume

3

fYear

2000

fDate

2000

Firstpage

1669

Abstract

This paper addresses an open control problem: control of sandwich nonlinear systems. Of interest are sandwiched nonsmooth nonlinearities between linear dynamic blocks. Several hybrid control schemes for control of such sandwich systems are presented. The proposed control schemes employ an inner-loop discrete-time feedback design and an outer-loop continuous-time feedback design, combined with a nonlinearity inverse, to cancel the effect of the sandwiched nonlinearity, for improving output tracking. Stability and tracking performance of the closed-loop control system are analyzed

Keywords

closed loop systems; control system analysis; control system synthesis; discrete time systems; feedback; inverse problems; nonlinear control systems; stability; tracking; closed-loop control system; hybrid control scheme analysis; hybrid control scheme design; inner-loop discrete-time feedback design; linear dynamic blocks; nonlinearity inverse; outer-loop continuous-time feedback design; output tracking; sandwich nonlinear systems; sandwiched nonsmooth nonlinearities; stability; tracking performance; Control system analysis; Control systems; Hydraulic actuators; Hysteresis; Linear feedback control systems; Linearity; Nonlinear control systems; Nonlinear systems; Pistons; Valves;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2000. Proceedings of the 2000

Conference_Location

Chicago, IL

ISSN

0743-1619

Print_ISBN

0-7803-5519-9

Type

conf

DOI

10.1109/ACC.2000.879485

Filename

879485