为总结和分析汽车惯性参数测量技术的研究进展、发展趋势和提高测量精度,分析了惯性参数对汽车动力学特性的影响,进而从汽车惯性参数的辨识和试验台测量2个方面对汽车惯性参数测量技术进行综述;在辨识汽车惯性参数时,应当根据采用的汽车动力学(操纵、平顺或行驶)模型进行相关的试验,考虑输入和输出试验数据测量精度对辨识结果的影响;汽车惯性参数测量试验装置从传统的单参数测量装置发展到了多参数汽车惯性参数测量装置,主要采用复摆原理或力/运动原理进行测量。试验台的摩擦和支撑系统的刚度是影响测量精度的2个主要因素,采用系统动力学的方法建立汽车惯性参数测量试验台的摩擦和弹性补偿模型,对试验台摩擦和弹性的影响进行分析。结果表明:汽车惯性参数测量试验台开发过程中,采用轻量化设计和测量误差分析技术指导试验台的优化设计是十分必要的;提出的汽车惯性参数测量试验台的摩擦和弹性计算方法,提高了测量精度。
In order to review the development progress of the automobile inertial parameters measuring technique and improve measuring accuracy,the effect of inertial parameters on automobile system dynamics was analyzed first.Then both the approaches of inertial parameters estimation and measuring devices were studied.The experiments should be designed according to different automobile system dynamics models to estimate inertial parameters.The effects of input and output data accuracy on estimation results should be considered.The devices measuring automobile inertial parameters have developed from the single parameter measuring device to multiple parameters measuring device.The main principles include compound pendulum principle or force/motion principle.The device friction and the stiffness of support system were the two major factors affecting measuring accuracy.The system dynamics methods were used to establish the compensation model of the measuring devices friction and stiffness,and the effect on automobile inertial parameters measuring was analyzed.The result shows that it is necessary to adopt the lightweight design and error analysis technique to optimize the design of platform.The calcula-tion methods proposed to examine the effect of devices friction and stiffness on automobile inertial parameters measuring can improve measuring accuracy.14 figs,36refs.