摘要
针对传统测量汽车动力总成惯量参数的繁琐操作,依据扭摆测惯量原理,设计了一个由称重传感器支撑的可升降的扭杆摆平台,利用三坐标仪建立动力总成坐标系,根据平台与总成上一些特征点的空间位置关系,求得任意姿态下动力总成坐标系各坐标轴与平台转轴的空间夹角,进而求得过动力总成质心惯量参数。标准块测试数据结果表明,利用该测量方法能够测得动力总成的惯性参数,且具有较高精度。
To avoid the tedious operations of traditional methods,the torsion bar platform with weight sensors was designed to measure auto powertrain inertia according to the inertia measurement theory of torsion pendulum.Firstly,the coordinates of auto powertrain were built with three dimensional coordinate measuring instruments;then the angles between auto powertrain coordinates＇ axles and the rotary axle of the torsion bar platform were obtained through the dimensional relationship of some characteristic points that was signed on the auto powertrain and the torsion bar platform;and finally the inertia parameters of auto powertrain were produced.The measuring data of standard piece indicated that the method is applicable for practical measurement with good accuracy and precision.
出处
《中国测试》
CAS
2011年第2期17-20,29,共5页
China Measurement & Test
关键词
汽车动力总成
转动惯量
扭杆摆
三坐标仪
称重平台
auto powertrain
moment of inertia
torsion pendulum
three dimensional coordinate instrument
platform of weight
