基于滑模变结构控制的LED驱动电源研究  

Study of LED Power Supply Based on Sliding Mode Variable Structure Control

作　　者：汤守至[1] 肖辉[1] 郭凤群[1] 

机构地区：[1]同济大学电子与信息工程学院,上海201804

出　　处：《照明工程学报》2013年第5期94-98,共5页China Illuminating Engineering Journal

摘　　要：本文从LED工作特性出发,在分析LED驱动电源及其控制方式应用现状的基础上,提出了一种应用于LED照明系统恒流电源的滑模变结构控制(SMC)方法,通过选择合适的滑模面函数及控制参数,实现了对LED负载的恒流控制。本文采用MATLAB软件进行建模与仿真,将滑模变结构控制方法与常规的PI控制方法进行对比研究。仿真结果证明了滑模变结构控制方法在LED驱动电源设计中的有效性与优越性。This paper is built up based upon LED＇s working characteristics. By analyzing the application status of the LED power supply and its control methods, a new LED constant current power supply which based on the sliding mode variable structure control （SMC） method is proposed. In the paper, the LED power supply based on the SMC method achieves the constant current control of LED loads by choosing a set of suitable control parameters and sliding mode plane function. The simulation of a suitable model using MATLAB is given in this paper; meanwhile, the comparison between the new SMC method and the conventional PI control method is shown. The simulation results prove the effectiveness and the superiority of the SMC method in the design of LED power supply.

关 键 词：LED 驱动电源 恒流 滑模变结构控制 

分 类 号：TM923.34[电气工程—电力电子与电力传动]