The invention relates to a vehicle semi-active suspension vibration reduction control method. According to the method, a small-range negative stiffness characteristic curve is designed at a suspension balance point, a two-degree-of-freedom quarter vehicle suspension system model is established, a differential equation expression of the two-degree-of-freedom quarter vehicle suspension system model is listed, and damping of a suspension variable damper is controlled to suppress vehicle vibration. Due to the fact that the balance point of the vehicle suspension is connected with the spring with the negative stiffness in parallel, the area, close to the balance point, of the spring system after parallel connection has the certain negative stiffness characteristic. At the moment, the suspension system has positive and negative stiffness values in a limited variation range in an area near a vibration balance point. Therefore, vibration transmitted from the road surface to the vehicle body can be better restrained, and the riding comfort of the vehicle is obviously improved.
本申请涉及一种车辆半主动悬架减振控制方法,该方法在悬架平衡点设计小范围负刚度特性曲线,建立二自由度四分之一车辆悬架系统模型,列出其微分方程表达式,对悬架可变阻尼器的阻尼进行控制来对车辆振动进行抑制。由于在车辆悬架的平衡点处并联一个具有负刚度的弹簧,使得并联后的弹簧系统在平衡点处附近的区域具有一定的负刚度特性。此时悬架系统在振动平衡点附近的区域具有有限变化范围的正负刚度值。从而能够更好的抑制路面传递给车身的振动,明显提高车辆乘坐的舒适性。
Vibration reduction control method for vehicle semi-active suspension and vehicle semi-active suspension
一种车辆半主动悬架减振控制方法及车辆半主动悬架
2023-03-31
Patent
Electronic Resource
Chinese
IPC: | B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge |
A class of semi-active suspension schemes for vehicle vibration control
Tema Archive | 1994
|A class of semi-active suspension schemes for vehicle vibration control
Online Contents | 1994
|Reduction of vibration in tractor using semi-active suspension
Automotive engineering | 2002
|Semi-active suspension improves rail vehicle ride
IET Digital Library Archive | 1994
|