摘要
针对当前各种电子设备不断发展对电源管理芯片的精度、速度等要求越来越高的趋势,提出一种基于模糊逻辑的反计算法抗饱和双环PID(AWF-DPID)控制策略,实现同步Buck变换器的恒压限流功能。在双环PID(DPID)的基础上,设计一个二维模糊控制器,实时调整电压环输出参数,在电压环输出设计一个反算法抗积分饱和模块,从而调节Buck变换器的脉冲宽度,更高效精准地实现控制。变换器在10 kHz的频率下工作,给出变换器参数通过软件对不同控制策略进行仿真。结果表明,在实现恒压限流的相同控制目标下,AWF-DPID控制较其他控制响应更迅速、超调量更小稳态误差更小并且纹波系数更小;变输出指令下电压跟随性最好,有良好的动态特性。
In view of the increasing requirements for the accuracy and speed of power management chips with the continuous development of various electronic devices,an anti-windup anti-saturation double-loop PID(AWF-DPID)control strategy based on fuzzy logic is proposed to realize the constant voltage current limiting function of synchronous buck converter.On the basis of double-loop PID(DPID),a two-dimensional fuzzy controller is designed to adjust the voltage loop output parameters in real time,and an anti-windup anti-integral saturation module is designed at the voltage loop output,so as to adjust the pulse width of the buck converter and realize the control more efficiently and accurately.The converter operates at a frequency of 10 kHz,and the converter parameters are given and different control strategies are simulated by software.The results show that under the same control goal of achieving constant voltage current limiting,AWF-DPID control responds faster and overshoot is smaller than other controls.Smaller steady-state error and smaller ripple coefficient;The voltage following is the best under the variable output command and has good dynamic characteristics.
作者
张磊
马家庆
吴钦木
何志琴
陈昌盛
覃涛
ZHANG Lei;MA Jiaqing;WU Qinmu;HE Zhiqin;CHEN Changsheng;QIN Tao(The Electrical Engineering College,Guizhou University,Guiyang 550025,China)
出处
《组合机床与自动化加工技术》
北大核心
2024年第7期103-108,共6页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金资助项目(62163006)
贵州省科技计划项目(黔科合支撑[2021]一般442,[2022]一般264,[2023]一般096,[2023]一般179)。
