摘要
针对传统控制技术应用于反激变换器时控制精度低、超调大等问题,提出一种预测模糊PI控制策略。在对反激变换器进行频率响应分析、PI和PID补偿分析的基础上,进而分析变换器的非线性特性。基于模糊PI控制提高系统的控制精度,同时引入单值模型预测算法改进模糊PI控制器的输入,最大限度地减小相位滞后的影响。Simulink仿真验证结果表明,相比于PID控制模式,该系统的稳态误差控制在0.55%左右,动态调节时间为0.02 s,超调量几乎为零。仿真结果验证了控制策略的性能。
In allusion to the problems of low control accuracy and large overshoot during application of the traditional control technology to the flyback converter,a predictive fuzzy PI control strategy is proposed. On the basis of frequency response analysis,and PI and PID commpensation analysis of the flyback converter,the nonlinear characteristic of the converter is analyzed. The control accuracy of the system is improved based on fuzzy PI control. The single-value model prediction algorithm is introduced to improve the input of the fuzzy PI controller,so as to minimize the influence of phase lag. The verification results of the Simulink simulation show that in comparison with the PID control mode,the steady-state error of the system is controlled at about 0.55%,the dynamic adjustment time is 0.02s,and the overshoot is almost zero. The simulation results verified the performance of the control strategy.
作者
管雪梅
张卢军
樊粉霄
GUAN Xuemei;ZHANG Lujun;FAN Fenxiao(School of Mechanical and Electrical Engineering,Northeast Forestry University,Harbin 150040,China)
出处
《现代电子技术》
北大核心
2019年第2期9-13,共5页
Modern Electronics Technique
基金
哈尔滨创新人才研究基金(2013RBFQXJ138)
中央大学基础研究基金(2572015CB11)~~
作者简介
管雪梅(1980-),女,黑龙江哈尔滨人,副教授,硕士生导师,主要研究方向为开关电源智能控制;张卢军(1993-),男,江西吉安人,硕士研究生,主要研究方向为开关电源智能控制;樊粉霄(1991-),女,河北邢台人,硕士研究生,主要研究方向为开关电源智能控制。
