具有侧隙补偿的汽车传动约束振动抑制方法

Restrained Vibration Suppression of Automobile Transmission with Backlash Compensation

为了补偿差速齿轮的齿轮侧隙,提出了一种汽车传动系统的振动抑制方法,以便在周期约束条件下保持系统的稳定性。首先,搭建了一个仅反映汽车传动基本结构的实验装置,以便专注于侧隙的影响。然后,为了处理控制周期约束,利用了采样数据控制理论,并通过频率加权函数构造了伺服系统。此外,还提出了一种简单的控制模式切换算法来补偿侧隙。最后,通过实验验证了该方法的有效性,并与传统离散逼近法进行了比较。结果表明,即使当控制周期延长到固有频率的5倍时,也可以获得较高的振动抑制性能,有效提高了驾驶性能。

In order to compensate the backlash of differential gears,a vibration suppression method of automobile transmission system is proposed to keep the stability of the system under periodic constraints.First of all,an experimental device is built,which only reflects the basic structure of automobile transmission,so as to focus on the influence of side clearance.Then,in order to deal with the control period constraint,the servo system is constructed by using the sampling data control theory and the frequency weighting function.In addition,a simple control mode switching algorithm is proposed to compensate for the side gap effect.Finally,the effectiveness of this method is verified by experiments and compared with the traditional discrete approximation method.The results show that even when the control period is extended to 5 times the natural frequency,this method can obtain higher vibration suppression performance and effectively improve the driving performance.