Title :
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
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;
Conference_Titel :
Intelligent Control and Automation, 2000. Proceedings of the 3rd World Congress on
Conference_Location :
Hefei
Print_ISBN :
0-7803-5995-X
DOI :
10.1109/WCICA.2000.862636
