摘要
针对Boost变换器的强非线性,传统控制方法不易取得良好的控制效果,设计了Boost变换器PWM模糊滑模变结构控制器。该控制器结合PWM调制、模糊推理和滑模变结构控制三者的优点,通过在线模糊逻辑推理调整滑模变结构控制的切换面参数,从而使系统状态点的滑模运动保持稳定,逐渐趋向平衡点,提高滑模变结构控制器的控制效果。通过Matlab仿真比较,该控制器较好地解决了系统抖振问题,具有良好的动态性和较强的鲁棒性。
Targeting the strong non-lineafity of boost converter,the traditional control methods are difficult to obtain good controlling effects.In this paper,a fuzzy sliding mode variable structure PWM controller of boost converter is designed.The controller provides all the advantages of PWM modulation,fuzzy logical control and sliding mode variable structure control by a good combination of the three,and switches online the surface parameters of the fuzzy sliding mode variable structure control,so as to ensure a stable sliding mode action and enhance the controlling effects of the controller.By a comparison with the Matlab simulation,the controller is proved efficient to solve the chattering problem and has good dynamic performance and strong robustness.
出处
《西南科技大学学报》
CAS
2013年第2期78-83,91,共7页
Journal of Southwest University of Science and Technology
基金
重庆市高校优秀成果转化项目(kjzh10219)
关键词
模糊控制
模变结构控制
PWM
等效控制
MATLAB仿真
Fuzzy control
Sliding mode variable structural control
PWM
Equivalent control
Matlab simulation
