Title :
Fractional-order sliding mode-extremum seeking control design with fractional-order PI sliding surface
Author :
Yin, Chun ; Cheng, Yuhua ; Zhong, Shou-ming ; Cao, Jiuwen ; Li, Zhuo
Author_Institution :
School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, P.R. China
Abstract :
This paper proposes a fractional-order sliding mode-extremum seeking controller (FO SM-ESC) for optimal search of unknown nonlinear systems. The proposed FO SM-ESC combines extremum seeking controller with FO sliding mode dynamics, in which FO proportional-integral (PI) sliding surface is adopted. FO SM-ESC can not only guarantee the output near the optimum point but also own a faster convergence speed and higher accuracy than integer-order (IO) SM-ESC with proportional (P) sliding surface. Fair comparisons of the FO/IO SM-ESC via simulation results show the effectiveness of the proposed control method.
Keywords :
Accuracy; Convergence; Nonlinear systems; Oscillators; Simulation; Stability analysis; Switches; Fractional order extremum seeking control; Fractional order proportional integral sliding surface; Tracking performance; Uncertain systems;
Conference_Titel :
Control Conference (CCC), 2015 34th Chinese
Conference_Location :
Hangzhou, China
DOI :
10.1109/ChiCC.2015.7259692
