NDLI: Fuzzy robust sliding mode control of a class of uncertain systems

Content Provider	Springer Nature Link
Author	Ren, Li tong Xie, Shou sheng Miao, Zhuo guang Tian, Hu sen Peng, Jing bo
Copyright Year	2016
Abstract	Aiming at a class of systems under parameter perturbations and unknown external disturbances, a method of fuzzy robust sliding mode control was proposed. Firstly, an integral sliding mode surface containing state feedback item was designed based on robust H $_{∞}$ control theory. The robust state feedback control was utilized to substitute for the equivalent control of the traditional sliding mode control. Thus the robustness of systems sliding mode motion was improved even the initial states were unknown. Furthermore, when the upper bound of disturbance was unknown, the switching control logic was difficult to design, and the drawbacks of chattering in sliding mode control should also be considered simultaneously. To solve the above-mentioned problems, the fuzzy nonlinear method was applied to approximate the switching control term. Based on the Lyapunov stability theory, the parameter adaptive law which could guarantee the system stability was devised. The proposed control strategy could reduce the system chattering effectively. And the control input would not switch sharply, which improved the practicality of the sliding mode controller. Finally, simulation was conducted on system with parameter perturbations and unknown external disturbances. The result shows that the proposed method could enhance the approaching motion performance effectively. The chattering phenomenon is weakened, and the system possesses stronger robustness against parameter perturbations and external disturbances.
Starting Page	2296
Ending Page	2304
Page Count	9
File Format	PDF
ISSN	20952899
Journal	Journal of Central South University of Technology
Volume Number	23
Issue Number	9
e-ISSN	22275223
Language	English
Publisher	Central South University
Publisher Date	2016-09-30
Publisher Place	Changsha
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	uncertain systems robust control fuzzy sliding mode control chattering Engineering Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys Engineering

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