Title :
Adaptive Fuzzy Sliding-Mode Control for Variable Displacement Hydraulic Servo System
Author :
Chiang, Mao-Hsiung ; Lee, Lian-Wang ; Liu, Hsien-Hsush
Author_Institution :
Nat. Taiwan Univ., Taipei
Abstract :
The variable displacement hydraulic servo system performs specific characteristics on non-linearity and time-varying. An exact model-based controller is difficult to be realized. In this study, the design method and experimental implementation of an adaptive fuzzy sliding-mode controller (AFSMC) are presented, which has on-line learning ability for dealing with the system time-varying and non-linear uncertainty behaviors for adjusting the control rule parameters. The tuning algorithms are derived in the sense of the Lyapunov stability theorem; thus, the stability of the system can be guaranteed. The experimental results show that the AFSMC can perform excellent position control and path control for the variable displacement hydraulic servo system.
Keywords :
Lyapunov methods; adaptive control; control system synthesis; displacement control; fuzzy control; hydraulic control equipment; nonlinear control systems; servomechanisms; time-varying systems; uncertain systems; variable structure systems; Lyapunov stability theorem;; adaptive fuzzy sliding-mode control; nonlinear uncertainty behaviors; on-line learning ability; path control; position control; time-varying uncertainty behaviors; variable displacement hydraulic servo system; Adaptive control; Control systems; Design methodology; Fuzzy control; Fuzzy systems; Nonlinear control systems; Programmable control; Servomechanisms; Sliding mode control; Time varying systems;
Conference_Titel :
Fuzzy Systems Conference, 2007. FUZZ-IEEE 2007. IEEE International
Conference_Location :
London
Print_ISBN :
1-4244-1209-9
Electronic_ISBN :
1098-7584
DOI :
10.1109/FUZZY.2007.4295434