基于SG的Buck变换器自适应反步滑模控制器  

Adaptive Backstepping Sliding Mode Controller for Buck Converter by System Generator

作　　者：王艳[1] 陈进军[1] 纪志成[1] 

机构地区：[1]江南大学电气自动化研究所,无锡214122

出　　处：《南京航空航天大学学报》2008年第5期682-686,共5页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：国家博士后基金(20080431066)资助项目;江苏省博士后基金(0801001B)资助项目

摘　　要：针对Buck变换器的非线性特性,考虑在电感电流连续导通模式下的数学模型,采用自适应反步滑模法设计其闭环控制器,同时基于系统生成器(System generator,SG)提出了数字控制器的实现方法,并分析了其负载扰动和电源扰动特性,将仿真结果与PI控制方式相比较,结果表明了自适应反步滑模控制的优越性和SG设计开发的有效性,为FPGA实现Buck变换器的数字控制器提供了新的设计流程。Aimed at the nonlinear characteristics of buck converter, a closed loop controller by using adaptive backstepping sliding mode method is used in continuous current mode （CCM）. A design method for the digital controller by system generator （SG） is proposed. And the disturbances characteristics of the load and the power are also analyzed. Simulation results show that the adaptive backstepping sliding mode controller is superior to PI controller and the SG design method is effective. The research provides a novel design flow process of the digital controller for buck converter using FPGA.

关 键 词：变换器 连续导通模式 自适应反步滑模 系统生成器 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]