论文部分内容阅读
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 summarize and analyze the research progress, development trend and measurement accuracy of the automobile inertial parameter measurement technology, the influence of the inertia parameter on the dynamic characteristics of the automobile is analyzed. From the two aspects of the automobile inertia parameter identification and the test bench measurement, In order to identify the inertia parameters of the vehicle, relevant tests should be carried out according to the vehicle dynamics (steering, smoothing or running) model adopted, the influence of the measurement accuracy of the input and output test data on the identification results, the measurement of the vehicle inertial parameters Test device from the traditional single parameter measurement device developed to a multi-parameter vehicle inertial parameter measurement device, the main complex complex pendulum principle or force / movement principle of measurement. The friction of the test bench and the stiffness of the support system are the two main factors that affect the measurement accuracy. The friction and elasticity compensation models of the inertial parameter measurement test rig are established by the method of system dynamics. The friction and elasticity of the test rig are analyzed. The results show that it is necessary to guide the optimization design of the test rig by adopting lightweight design and measurement error analysis technology during the development of automobile inertial parameter measurement test rig. The proposed method for calculating the friction and elasticity of the test rig for inertial parameter measurement improves the measurement accuracy.