扭摆法测量导弹转动惯量的误差分析

通过扭摆测量导弹转动惯量的方法,分析了周期测量误差、系统阻尼、摆动体周期以及被测件和摆动体共摆周期对转动惯量测量精度的影响,得出转动惯量测量误差和周期测量误差、摆动体摆动周期、被测件和摆动体共摆周期之间的关系,给出了在典型的测量精度要求,不同的周期测量误差情况下,摆动体转动惯量和被测件转动惯量之间的最大比值.试验结果表明,在阻尼较小时,为了提高试件的测量精度,必须尽量减小摆动体的空转转动惯量.

Error Analysis for Measurement of Missile's Movement Inertia with Torsion Pendulum

By measuring missile movement inertia with torsion pendulum,the influences of periodic measurement error,systemic damp,period of swing object and corporative period of the measured object and swinging object were analyzed.The relation among measurement error of movement inertia,measurement period,the period of swing object,corporative period of tested object and swing object was proved.The maximal ratio between movement inertia for swinging object and the measured object under conditions of different errors...