碰撞試驗(yàn)系統(tǒng)中加速度傳感器特性仿真研究

Numerical simulation of accelerometer sensor characteristics of an impact testing system

摘要: 航天器對(duì)接機(jī)構(gòu)緩沖能力的強(qiáng)弱直接決定了航天器所受沖擊的大小,，因此對(duì)緩沖機(jī)構(gòu)的性能進(jìn)行測(cè)試/試驗(yàn)具有重要的意義。文章以赫茲彈簧阻尼理論為依據(jù),，通過(guò)仿真計(jì)算,，分析了質(zhì)量、速度對(duì)碰撞過(guò)程的影響,；得到了加速度的頻率特性,；確定了碰撞試驗(yàn)系統(tǒng)中加速度傳感器的選擇原則。

Abstract: The impact on a spacecraft depends directly on the buffer ability of the spacecraft’s docking mechanism, therefore, it is important to test the performance of the buffering mechanism. In this paper, the effect of the mass and initial velocity on the impact period is studied by numerical simulations based on the Hertz contact model; furthermore, the frequency characteristics of the acceleration of this impact testing system are obtained, as the basis in choosing the accelerometer sensor for the impact testing system.