A novel reaching law approach of quasi-sliding-mode control for uncertain discrete-time systems

A novel discrete-time reaching law was proposed for uncertain discrete-time system, which contained process noise and measurement noise. The proposed method reserves all the advantages of discrete-time reaching law, which not only decreases the band width of sliding mode and strengthens the system r...

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Bibliographic Details
Published inJournal of Central South University Vol. 19; no. 9; pp. 2514 - 2519
Main Authors Yuan, Lei, Shen, Jian-qing, Xiao, Fei, Wang, Heng-li
Format Journal Article
LanguageEnglish
Published Heidelberg Central South University 01.09.2012
Subjects
Engineering
Metallic Materials
quasi-sliding-mode control
discrete-time reaching law
discrete-time system
Kalman filter
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Summary:A novel discrete-time reaching law was proposed for uncertain discrete-time system, which contained process noise and measurement noise. The proposed method reserves all the advantages of discrete-time reaching law, which not only decreases the band width of sliding mode and strengthens the system robustness, but also improves the dynamic performance and stability capability of the system. Moreover, a discrete-time sliding mode control strategy based on Kalman filter method was designed, and Kalman filter was employed to eliminate the influence of system noise. Simulation results show that there is no chattering phenomenon in the output of controller and the state variables of controlled system, and the proposed algorithm is also feasible and has strong robustness to external disturbances.
ISSN:2095-2899
2227-5223
DOI:10.1007/s11771-012-1304-y