Title :
Optimized fuzzy control for LED constant current driver design
Author :
Chen, Xiaoming ; Tao, JiLi ; Zhu, Yong ; Liu, Xiaoying
Author_Institution :
Ningbo Inst. of Technol., Zhejiang Univ., Ningbo, China
Abstract :
DC-DC boost converter in PWM switch mode is attractive for high power white LED constant current driver. The occurrence of uncertainty and coil magnetic saturation in DC-DC power converters makes their analysis and control difficult. A fuzzy logic controller (FLC) is then utilized to ensure current regulation over a wide range of parameters, which is perceived as an optimization problem. A robust controller is then obtained through evolutionary search. Extensive simulation results show the effectiveness of the proposed approach.
Keywords :
DC-DC power convertors; electric current control; fuzzy control; light emitting diodes; optimal control; optimisation; robust control; DC-DC boost converter; DC-DC power converters; PWM switch mode; coil magnetic saturation; fuzzy logic controller; high power white LED constant current driver; optimization problem; optimized fuzzy control; robust controller; uncertainty occurrence; Control systems; Converters; Driver circuits; Fuzzy logic; Light emitting diodes; Niobium; Uncertainty; constant current driver; fuzzy logic control; magnetic saturation; optimization; uncertainty;
Conference_Titel :
Fuzzy Systems and Knowledge Discovery (FSKD), 2010 Seventh International Conference on
Conference_Location :
Yantai, Shandong
Print_ISBN :
978-1-4244-5931-5
DOI :
10.1109/FSKD.2010.5569167
