论文部分内容阅读
为减小车体弹性振动,保护车下悬吊设备,研究了车体和车下悬吊设备的耦合振动关系,优化车辆动力学性能。考虑车体的弹性结构,建立车体与车下悬吊设备的刚柔耦合动力学仿真模型,对比分析了车下悬吊系统在被动控制方案和基于天棚阻尼的半主动控制方案下对车体弹性振动的影响,并分析了合理参数匹配的重要性。此外,以车下设备的质量为例研究了对半主动控制效果的影响。研究结果表明:在合理的参数匹配下,半主动控制方案能够有效降低车体的弹性振动;当车下设备质量较大时,半主动控制方案优于被动控制,且在一定范围内随质量增大减振效果更加明显。
In order to reduce the elastic vibration of the vehicle body and protect the under-vehicle suspension equipment, the coupling vibration between the vehicle body and the under-vehicle suspension equipment is studied to optimize the vehicle dynamic performance. Considering the elastic structure of the vehicle body, a rigid-flexible coupling dynamic simulation model of the vehicle body and the under-vehicle suspension equipment is established. The dynamic response of the vehicle under the passive control scheme and the canopy-based semi-active control scheme is compared and analyzed. The influence of elastic vibration, and analyzes the importance of reasonable parameter matching. In addition, the effect of the semi-active control effect is studied by taking the quality of the equipment under the vehicle as an example. The results show that the semi-active control scheme can effectively reduce the elastic vibration of vehicle body under the reasonable parameter matching. When the quality of the equipment under the vehicle is high, the semi-active control scheme is better than the passive control scheme, and with the increase of mass within a certain range Large damping effect is more obvious.