转动惯量试验台的惯性参数测量  

Measurement of inertial parameters of rotating inertia rig

作　　者：王杨[1] 宋占帅 郭孔辉[1] 庄晔[1] WANG Yang;SONG Zhan-shuai;GUO Kong-hui;ZHUANG Ye(State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130022,China)

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室

出　　处：《吉林大学学报（工学版）》2019年第6期1795-1801,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家青年科学基金项目（51705186）;中国汽车产业创新联合发展基金项目（U1664257）;江西科技学院汽车服务工程及产业升级协同创新中心开放基金项目（16XTKFYB01）

摘　　要：为解决复杂机械系统的惯性参数不易获取的问题,在研究惯性参数计算多体动力学的基础上,分别建立了质心位置坐标解算的静力学方程和惯性参数解算的动力学方程。为消除摩擦力对辨识精度的影响,提出预调平台运动方向,利用同角度下正、负摩擦力相消的试验方法,并利用数据滤波和数据拟合对试验数据进行处理,剔除数据高频噪声和谐波噪声。最后,利用递推最小二乘法实现对质心位置坐标和惯性张量的辨识,通过试验验证了该方法的有效性。本试验台能对发动机及动力总成等汽车部件的惯性参数进行测试。To solve the problem of struggling to obtain the inertial parameters of complex mechanical systems,the static equations for solving the coordinates of the center of mass and the dynamic equations for solving the inertia parameters are established respectively on the basis of studying the computational dynamics of inertial parameters.In order to eliminate the influence of friction on identification accuracy,a series of experimental methods are proposed,including pre-adjusting the moving direction of the platform,eliminating the positive and negative friction forces at the same angle,processing the experimental data by data filtering and data fitting to eliminate the high frequency noise and harmonic noise of the data.Finally,the recursive least square method is used to identify the coordinates of the center of mass and inertia tensors,and the validity of the method is verified by experiments.The test platform can test the inertia parameters of automobile parts such as engine and powertrain.

关 键 词：车辆工程 惯性参数 参数辨识 计算方法 

分 类 号：U461[机械工程—车辆工程]