加速度计的冲击摆校准法

The Calculations about Ballistic Pendulums

本文介绍了有关冲击摆(单摆与复摆)的计算方法、产生加速度的原理、加速度的调整与测量方法及其误差分析。冲击摆是在工厂条件下校准加速度计的一种装置,对于低于5000m/s2的冲击加速度,其稳定性和精确度都很好,若加速度波形为半正弦波,其综合测量误差优于5%。

This paper describes the calculations about mathematical (simple) and physical (compound) pendulum, the principle of produced acceleration, the adjusting and measuring methods and the error analysis methods of acceleration. The ballistic pendulum is a calibration unit of piezoelectrical accelerometers in factory conditions. For the shock accelerations less than 5000 m/s2, its stability and accuracy are all very good. If the form of acceleration is a half-sine wave form, its synthetic error of measurement is better than 5%.