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DOI: |
Received:November 23, 2005Revised:October 16, 2006 |
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Nonsmooth finite-time control of uncertain second-order nonlinear systems |
Shuanghe YU;Zi MA;Xiaohui YANG |
(Automation Research Center, Dalian Maritime
University,Dalian Liaoning 116026, China) |
Abstract: |
Nonsmooth finite-time stabilizing control laws have been developed
for the double integrator system. The objective of this paper is to
further explore the finite-time tracking control problem of a
general form of uncertain second-order affine nonlinear system with
the new forms of terminal sliding mode (TSM). Discontinuous and
continuous finite-time controllers are also developed respectively
without the singularity problem. Complete robustness can be acquired
with the former, and enhanced robustness compared with the
conventional boundary layer method can be expressed as explicit
bounded function with the latter. Simulation results on the
stabilizing and tracking problems are presented to demonstrate the
effectiveness of the control algorithms. |
Key words: Nonsmooth Finite-time stability Terminal sliding mode |