电动式主动馈能悬架综合性能的协调性优化

Coordinate Optimization for Synthetical Performance of Electrical Energy-Regenerative Active Suspension

针对永磁直流无刷电动机结合滚珠丝杠结构的电动式主动馈能悬架,建立了车辆悬架和控制电路模型,基于电动馈能悬架可回收路面振动能量的特性,进行了馈能悬架动力学性能和馈能效果的协调性分析.利用MATLAB/Simulink软件仿真,分析电机常数k值对悬架动力学性能和馈能效果的影响,并采用功能系数法对k值进行优化,在保证电动悬架馈能效果的同时,显著改善其动力学性能.

Aiming at energy-regenerative active suspension whose motor actuator is composed of a permanent-magnet direct-current motor, a ball screw and a nut, the suspension model and the control circuit model were set up separately. Based on the characteristic that the electrical energy-regenerative suspension can reclaim the road＇s vibration energy, the coordinate analysis for its dynamic performance and energy- regenerative effect was conducted. Through the simulation using MATLAB/Simulink software, the influ- ence that motor constant k exerted on the dynamic performance and energy-regenerative effect was ana- lyzed. Then, the k value was optimized through the function coefficient method, which can guarantee the energy-regenerative effect of the electrical suspension and improve its dynamic performance as well.