基于扭摆法的弹体转动惯量测量系统及误差分析

Error Analysis of an Inspecting System Based on Torsion Pendulum for Measuring the Rotational Inertia of Projectile

介绍了一种用于测量弹体转动惯量的系统,该测量系统利用扭摆机构、光电传感器提取摆动周期信息,由计算机组成的测量系统进行数据处理。阐述了系统的工作原理,推导了所需的计算公式,分析了产生测量误差的因素,进行了定量精度分析,并给出综合结论。

A system for measuring the rotational inertia of various projectiles is introduced. In this measuring system,a double suspension structure is adopted ,and an optoelectronic sensor is used to extract the information of the periods of torsion oscillation of the measured projectile. In this paper,the working principle of the system is expounded,tbe relevant formulae are derived ,and the main factors affecting precision are discussed. The measuring precision of the instrument is analyzed quantitatively, and a synthetical conclusion is given.