馈能式电磁作动器设计及特性试验研究

Research of the Design and Character Test of Energy-regenerative Electromagnetic Actuator

以某型轮式车辆为对象,为实现减振及馈能的双重目的,设计了齿轮齿条式电磁作动器(Electromagnetic actuator,EA),建立了相应的数学模型,并对其惯性力的影响及阻尼特性进行了分析。加工了原理样机,并对其机械摩擦特性、电磁阻尼特性、主动出力特性及反馈电压特性进行试验测试,验证EA是否满足设计要求。结果表明,最大机械摩擦力285 N,满足设计限制需求;额定电流约束下,最大电磁阻尼力约1100 N,具备较好的阻尼调节能力;最大主动出力近1 000 N,略小于理论值;最大反馈电压近80 V,悬挂相对速度0. 1～0. 3 m/s,在最优馈能区间内,整车馈能功率近百瓦,具备良好的馈能能力。该EA满足设计需求,结构方案可行。

In order to realize the purpose of vibration control and energy-regenerative,take some wheel type vehicle as object,an Electromagnetic actuator(EA)of gear and rack type is designed,the relative math model is built and the analysis of the influence of inertia force and its character of damping is conducted.For the purpose of verifying whether the EA satisfies the design demands,the principle prototype is machined,and the experiment test of its character of mechanical friction,electromagnetic damping,active force and feedback voltage are conducted.The result indicates that the maximum mechanical friction force is 285 N,which satisfy the demand of design restrict.Under the restrain of rated current,the maximum electromagnetic damping force is about 1 100 N,which means a good damping adjust ability.The maximum active force is close to 1 000 N,a bit less than theoretical value,the maximum feedback voltage is about 80 V,during the optimal energyregenerative interval of suspension relative velocity of 0.1~0.3 m/s,energy-regenerative power is close to hundred Watt of whole vehicle,which is proved possess good ability of energy-regenerative.The EA satisfy the design demand,and the structure scheme is feasible.