轿车AMT执行机构室内振动疲劳试验方法

Indoor vibration fatigue test method for a car AMT actuator

AMT执行机构的振动疲劳可靠性是AMT最重要的性能之一。针对轿车AMT建立了其道路载荷谱采集方法,通过合理布置传感器,在襄阳汽车试验场采集了AMT及其执行机构振动载荷谱,并对载荷谱进行了预处理和重复性检验,获取了AMT执行机构振动载荷谱期望响应信号。基于远程参数控制思想,提出了时域和频域误差加权的期望响应信号模拟迭代算法,并对AMT执行机构振动载荷谱期望响应信号进行了模拟迭代,获取了高精度的模拟迭代响应谱,精确再现了AMT执行机构振动情况,建立了轿车AMT执行机构室内振动疲劳试验方法,为室内准确高效考核轿车AMT执行机构振动疲劳可靠性提供了一种行之有效的手段和方法。

The vibration fatigue reliability of a car AMT actuator is one of the most important performances of AMT. Aiming at a car AMT, the collecting method of road load spectrum was established, and sensors were installed reasonably, then vibration load spectra of AMT and its actuator were collected in Xiangyang Proving Ground. Through pretreatment and repeatability inspection of load spectra, the expected response signal for the actuator's vibration load spectrum was obtained. Based on remote parameter control (RPC), the expected response signal simulation iteration algorithm with time-frequency domain errors weighted was put forward. With the algorithm, the expected response signal of the actuator was iterated and simulated, and the precise simulated response spectrum was obtained, the vibration situation of the car AMT actuator was reproduced in door. At last, indoor vibration fatigue test method for a car AMT actuator was established, it provided an accurate and efficient method for fatigue reliability assessment of a car AMT actuator.