Discrete-time quasi-sliding-mode control strategies
Bartoszewicz, A.
Inst. of Autom. Control, Tech. Univ. Lodz;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Aug 1998
Volume: 45,
Issue: 4
On page(s): 633-637
ISSN: 0278-0046
References Cited: 10
CODEN: ITIED6
INSPEC Accession Number: 6000791
Digital Object Identifier: 10.1109/41.704892
Current Version Published: 2002-08-06
Abstract
In this paper, discrete-time quasi-sliding-mode control systems
are considered. A new definition describing the quasi-sliding mode as a
motion of the system, such that its state always remains in a certain
band around the sliding hyperplane, is introduced. Then, two novel
reaching laws satisfying conditions of the definition are proposed and
applied to the design of appropriate linear control strategies which
drive the state of the controlled system to a band around the sliding
hyperplane. Consequently, the undesirable chattering and high-frequency
switching between different values of the control signal are avoided.
The strategies, when compared with previously published results,
guarantee better robustness, faster error convergence, and improved
steady-state accuracy of the system. Furthermore, better performance of
the system is achieved using essentially reduced control effort
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