Title :
DSP Based Control of Parallel DC-DC Boost Converters by Adaptive Fuzzy Sliding-Mode Control Scheme
Author :
Yin, Li-Peng ; Cheng, Chi-Cheng ; Chen, Chih-Yung ; Zheng, Ming-Sheng ; Chang, En-Chih
Author_Institution :
Dept. of Mech. & Electro-Mech. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan
Abstract :
An adaptive fuzzy sliding-mode (AFSM) control system is developed to control parallel DC-DC boost converters. The AFSM control system that combines a fuzzy adaptation technique with sliding mode control to enhance robustness and sliding performance in a class of uncertain multi-input multi-output (MIMO) nonlinear systems is proposed. Using an online adaptation scheme, a fuzzy sliding mode controller is used to approximate the equivalent control in neighborhood of the sliding manifold. The controller improves the dynamic performance of a parallel boost converter, the output voltage is robust against load disturbances and the output currents are very well equalized. Experimental results show that the proposed MIMO-AFSM control system is found to achieve favorable regulation performances even under load-resistance variations.
Keywords :
DC-DC power convertors; MIMO systems; adaptive control; digital signal processing chips; fuzzy control; load regulation; nonlinear control systems; robust control; uncertain systems; variable structure systems; DSP based control; adaptive fuzzy sliding mode control; load disturbance; load resistance variation; parallel DC-DC boost converter; regulation performance; robust control; uncertain multi-input multi-output nonlinear system; Control systems; Converters; Inductors; MIMO; Mathematical model; Robustness; Voltage control; boost converters; fuzzy sliding mode;
Conference_Titel :
Genetic and Evolutionary Computing (ICGEC), 2010 Fourth International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4244-8891-9
Electronic_ISBN :
978-0-7695-4281-2
DOI :
10.1109/ICGEC.2010.40
