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JACIII Vol.11 No.10 pp. 1224-1231
doi: 10.20965/jaciii.2007.p1224
(2007)

Paper:

Robust Non-Overshoot Time Responses Using Cascade Sliding Mode-PID Control

Thanh H. Tran, Quang P. Ha, and Hung T. Nguyen

Faculty of Engineering, University of Technology, Sydney, PO Box 123, Broadway NSW 2007, Australia

Received:
October 30, 2006
Accepted:
August 5, 2007
Published:
December 20, 2007
Keywords:
sliding mode, cascade control, overshoot, robustness
Abstract

Overshoot is a serious problem in automatic control systems. This paper presents a new method for elimination of the step response overshoot in a conventional PID-controlled system and enhancement of its robustness by cascading a sliding mode controller in the outer loop. The idea is first to use the cascade control principle to model the under-damped system under PID control with a second-order system. Then, by making use of the sliding mode control outer loop, a robust, reduced-order response can be obtained to suppress the control overshoot. The proposed approach can also deal with time delay systems. Its validity is verified through simulation for some dynamic systems subject to highly nonlinear uncertainties, where overshoot remains an issue.

Cite this article as:
Thanh H. Tran, Quang P. Ha, and Hung T. Nguyen, “Robust Non-Overshoot Time Responses Using Cascade Sliding Mode-PID Control,” J. Adv. Comput. Intell. Intell. Inform., Vol.11, No.10, pp. 1224-1231, 2007.
Data files:
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