Buck变换器的幂次函数指数趋近律滑模算法研究

Buck Converter Sliding Mode Algorithm Based on Power Function Exponential Reaching Law

在指数趋近律的基础上,设计一种新型的幂次函数指数趋近律。利用幂次函数的智能特性,使轨迹的运动速度与轨迹和滑模面的距离相关联,实现自适应调节,克服了指数趋近律在穿越滑模面时的剧烈切换,抑制了抖振现象。将此幂次函数指数趋近律应用于Buck变换器,并给出具体的Matlab/Simulink仿真模块,仿真验证了此方法的有效性。

A new kind of power function exponential reaching law was designed based on exponential reaching law. The intelligence features of the exponential function were used to associate the speed of the trajectory with the distance of velocity to the sliding mode surface, and adaptive adjustment was implemented. The reaching law could suppress the chattering of the exponential reaching law when it crossing through a sliding mode surface. The power function exponential reaching law was applied to the Buck converter. A specific Matlab/Simulink module was presented, and the simulation verified the effectiveness of this method.