二重动力吸振器在汽车振动控制中的应用

Application of Double Dynamic Vibration Absorber in Automobile Vibration Control

传统动力吸振器结构简单,减振性能好,在汽车振动控制领域得到广泛应用。但是,因传动动力吸振器参数不可变,减振频带窄,当激振频率发生偏移时有可能加剧被控对象振动。为解决这一问题,文章提出了二重动力吸振器。依据二重吸振器模型,推导了二重吸振器的解析解,分析其减振性能。仿真结果表明,与传统动力吸振器相比,二重动力吸振器在振动控制中的工作性能更稳定。

The traditional dynamic vibration absorber is widely used in the field of automobile vibration control because of its simple structure and good vibration damping performance.However,due to the invariable parameters of the transmission power vibration absorber and the narrow vibration damping frequency band,when the excitation frequency shifts,the vibration of the controlled object may increase.To solve this problem,this paper proposes a dual dynamic shock absorber.Based on the model of the dual vibration absorber,the analytical solution of the dual vibration absorber is derived,and the vibration damping performance is analyzed.The simulation results show that,compared with the traditional dynamic vibration absorber,the dual dynamic vibration absorber has more stable performance in vibration control.