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《Journal of Dalian Maritime University》 2008-02
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Gain adaptive sliding mode variable structure control in electro-hydraulic servo system

HUANG Yuan-feng a,LIU Yuan b,TAN Hong-hua a (a.School of Electrical and Electronic Engineering;b.School of Mechanical Engineering,Wuhan Institute of Technology,Wuhan 430073,China)  
To compensate effectively such elements as the nonlinearity,uncertainty and unmodeled dynamics in electro-hydraulic servo system,a mathematic model of the system was turned into an equivalent linear model including an item of identification error which called 2nd uncertainty of adaptive dynamic recurrent fuzzy neural networks(ADRFNN).The gain adaptive sliding mode variable structure control(GASMC)was used to synthesize the control effort.Experimental results show that the high identification accuracy online by ADRFNN and the adaptive function of the gain with correction item in the GASMC make the system possess strong robustness and high steady accuracy,meanwhile the chattering phenomenon of the control effort is suppressed effectively.
【Fund】: 湖北省自然科学基金资助项目(2006ABA279)
【CateGory Index】: TP273
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