越野车辆机动性研究  

Mobility of off-road vehicle

作　　者：韩愈[1,2] 孟广伟[1] 黄朝胜 门玉琢[3] 

机构地区：[1]吉林大学机械科学与工程学院,长春130025 [2]中国第一汽车股份有限公司技术中心,长春130011 [3]长春工程学院机电工程学院,长春130012

出　　处：《振动与冲击》2015年第2期96-100,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金(51378075)

摘　　要：为研究越野车辆行驶在不平路段机动性问题,通过偏频试验识别车辆部分特征参数,测量试验车辆悬架位移,计算行驶路段路面不平度,监测驾驶员座椅Z加速度在不平试验路段时序信号,据人体疲劳特性计算人体吸入功率,并建立"人体-车身-车轮"三自由度振动模型;用傅里叶逆变换生成不平路段的时序信号作为仿真输入,利用Simulink仿真试验车辆驾驶员座椅Z向加速度在不平路段的时序信号;提出人体吸入功率为6 W时对应的车速作为评判越野车在不平路段的机动性能。The problem of mobility of off-road vehicle on roughness roads was studied.The vehicle model parameters were identified by using frequency offset tests.The road roughness was estimated by testing the suspension displacement.The driver seat＇s vertical acceleration time series signal on roughness roads was detected.The absorbed power was calculated based on human tolerance limit.The ‘human-vehicle body-wheel＇three-degree-of-freedom vibration model was built.The road roughness time series signals were worked out by the inverse Fourier transform,and then were used as the input of the simulation.On the other hand,the driver seat＇s vertical acceleration signal on roughness roads was simulated by utilizing the Simulink software.The speed at absorbed power of six-Watt was suggested to indicate the mobility of the off-road vehicle passing through roughness roads.

关 键 词：车辆机动性 路面不平度 偏频试验 动力学仿真 

分 类 号：U467.6[机械工程—车辆工程]