Title :
Output feedback variable structure controllers and state estimators for uncertain/nonlinear dynamic systems
Author :
Zak, S.H. ; Hui, S.
Author_Institution :
Sch. of Electr. Eng., Purdue Univ., West Lafayette, IN, USA
fDate :
1/1/1993 12:00:00 AM
Abstract :
A new class of output feedback variable structure controllers and state estimators (observers) for uncertain/nonlinear dynamic systems with bounded uncertainties and/or nonlinearities are proposed. No statistical information about the uncertain elements is assumed. A variable structure systems (VSS) approach together with the geometric approach to the analysis and synthesis of system zeros are employed in the synthesis of the proposed output feedback controllers and state estimators. The role of system zeros in the output feedback stabilisation and state estimation, using the VSS approach, is discussed. Numerical examples included illustrate the feasibility of the proposed stabilisation and state estimation schemes.
Keywords :
State estimation; control system analysis; control system synthesis; feedback; nonlinear control systems; poles and zeros; stability; state estimation; variable structure systems; bounded uncertainties; nonlinearities; output feedback variable structure controllers; stabilisation; stability; state estimators; system zeros; uncertain/nonlinear dynamic systems; variable structure systems;
Journal_Title :
Control Theory and Applications, IEE Proceedings D