摘要
重复控制是改善非线性负载下单相正弦波逆变电源输出电压波形的一种有效手段,但控制动态响应慢。模糊自整定比例积分(PI)控制则可以加快系统响应速度。为了提高逆变电源的动、静态性能,提出了将模糊自整定PI控制与重复控制相结合的单相逆变电源变结构控制方案。误差大时,采用模糊自整定PI控制,误差小时,采用重复控制。分析了变结构控制系统的结构及系统的设计方法,并进行了仿真研究。仿真结果表明,变结构控制策略使系统具有输出波形好、动态响应快等优点。并且控制策略具有在线计算和计算量小的特点,是一种实用的数字控制方案。
Repetitive control is an effective method to improve voltage waveform of sine wave inverter under no linear load. However, the dynamic response of repetitive control is slow. Fuzzy self - tuning proportion integral （PI） control can quicken the system speed. In order to improve both the transient and steady state responses of a single - phase inverter, a variable - structure control strategy is presented based on repetitive control and fuzzy self - tuning PI control in this paper. The proposed control strategy can run Fuzzy self - tuning PI controller or repetitive controller according to the error. The structure and the design method of the system are analysed . A simulation study of the system is made and the results verifies the feasibility of the proposed control strategy. And it is a simple and practical control method.
出处
《计算机仿真》
CSCD
北大核心
2009年第9期223-226,共4页
Computer Simulation
关键词
逆变电源
重复控制
模糊自整定比例积分控制
变结构控制
Inverter
Repetitive control
Fuzzy self - tuning proportion integral （ PI ） control
Variable - structurecontrol
