摘要
针对传统扭振减振器不能满足现代汽车对于减振降噪的需要,提出了一种基于正负刚度并联半主动控制扭振减振器,论述了其结构形式与减振机理。基于半主动扭振减振器弹性元件刚度表达式,建立了半主动扭振减振器非线性动力学模型。通过对系统的相平面图和幅频特性曲线的绘制,证明了减振器在整个工作频带内都具有稳定性。在怠速工况和五档工况下对半主动扭振减振器进行了减振仿真计算,通过对比减振器主、被动端的角加速度响应,证实了该减振器具有良好的扭振减振效果。
Because the traditional torsional damper can not meet the needs of the vibration and noise reduction, the concept of semi-active control of torsional vibration damper based on combined positive and negative stiffness is derived, and its working principle is discussed. By establishing stiffness expression of semi-active control of torsional vibration damper, its nonlinear dynamic model is established. By drawing the system＇s phase plane and amplitude-frequency characteristic curve, it is proved that damper have stability within the entire operating band. Conducting simulation for the damper on the idle condition and the fifth speed condition, it is confirmed that the torsional vibration control effect of the damper is better by contrast angular acceleration response of damper active and passive end.
出处
《机械设计与制造》
北大核心
2014年第12期5-8,共4页
Machinery Design & Manufacture
基金
国家自然科学基金(51375047)
关键词
扭振减振器
负刚度
非线性
稳定性
动力学特性
Torsional Damper
Negative Stiffness
Nonlinear
Stability
Dynamic Characteristic
