A simplified discrete time variable structure control design with alleviation of switching effort

Author

Huang, Y.J. ; Kang Way, Hang

Author_Institution

Inst. of Electr. Eng., Yuan Ze Univ., Chungli, Taiwan

Volume

4

fYear

2000

fDate

2000

Firstpage

3026

Abstract

A sliding mode control method is presented for discrete-time systems. The switching surface is defined by using only output and its delayed signals. In the sliding mode, the closed-loop eigenvalues are proved to be within the unit circle in the z-plane. Therefore, the stability of the control system is guaranteed and robust output performance is ensured with the presented switching surface design. In special cases, a transformation can be made to convert the control system into a form of system with time-delayed inputs. It is verified that the proposed discrete control method indeed assures the robustness against system uncertainties and disturbances

Keywords

closed loop systems; control system synthesis; discrete time systems; eigenvalues and eigenfunctions; robust control; variable structure systems; closed-loop eigenvalues; disturbances; robustness; simplified discrete time variable structure control design; sliding mode control method; switching effort; switching surface; time-delayed inputs; uncertainties; Control design; Control systems; Delay systems; Design methodology; Eigenvalues and eigenfunctions; Open loop systems; Robust control; Robust stability; Sliding mode control; Uncertainty;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Control and Automation, 2000. Proceedings of the 3rd World Congress on

Conference_Location

Hefei

Print_ISBN

0-7803-5995-X

Type

conf

DOI

10.1109/WCICA.2000.862636

Filename

862636