Title :
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
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;
Conference_Titel :
American Control Conference, 2000. Proceedings of the 2000
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-5519-9
DOI :
10.1109/ACC.2000.879485
