电液式阻尼器对履带车辆平顺性影响研究

Research on the Influence of Electric Hydraulic Damper on the Ride Comfort of Tracked Vehicle

将天棚控制算法应用于履带车悬挂系统,对四分之一车模型做了含有弹簧、被动阻尼器和半主动阻尼器的三元素并联简化.推导出四分之一车的半主动控制算法数学模型,对半主动悬挂和被动悬挂做了仿真对比,探究了改变可调最值阻尼系数对车辆平顺性改变的影响.搭建了半主动臂的单轮悬架试验系统.仿真结果及单轮悬架试验结果均表明:半主动悬挂能够明显地降低车身的加速度、速度以及动行程,提高行驶平顺性,同时增大电液式阻尼器阻尼系数的极值差对提高车辆的平顺性有正向促进作用,而增大最大阻尼系数对平顺性的改善更加明显.

The ceiling control algorithm is applied to the suspension system of tracked vehicle,and the quarter vehicle model is simplified by three elements including spring,passive damper and semi-active damper.The mathematical model of semi-active control algorithm for quarter vehicle model is deduced.The semi-active suspension and passive suspension are simulated and compared,and the influence of changing the adjustable maximum damping on the change of vehicle ride comfort is explored.The single wheel suspension test system of semi-active arm is built.The simulation results and single wheel suspension test results show that the semi-active suspension can significantly reduce the acceleration,speed and dynamic travel of the vehicle body,and improve the ride comfort.At the same time,increasing the extreme difference of the electro-hydraulic damper damping has a positive effective on improving the ride comfort of the vehicle,and increasing the maximum damping has a more obvious effect on improving the ride comfort.