| 基于激光多普勒原理的超高冲击加速度校准系统 |
| Ultra‐high shock acceleration calibration system based on laser Doppler principle |
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| 中文摘要: |
| 超高冲击加速度传感器在武器研制、航空航天等高过载测量中发挥了重要的作用，为解决超高冲击加速度的校准问题，基于激光绝对法，建立了超高冲击加速度校准系统。本文介绍了系统的组成和优化方案，设计了合适的解调程序和滤波算法，对原始多普勒信号进行解调，实现了冲击加速度峰值1 × 104 g ~ 2.5 × 105 g，脉宽20 ~ 50 μs范围内半正弦冲击波形的绝对复现。最后对影响测量结果的不确定分量进行评定，超高冲击加速度测量不确定度为8%，对2 × 105 g以上冲击加速度校准具有重要意义。 |
| 英文摘要: |
| Ultra-high shock acceleration sensor plays an important role in weapon development, aerospace and other high overload measurements. Based on the primary calibration by laser interferometry, an ultra-high shock acceleration calibration device is established to calibrate the high shock acceleration. The composition and design optimization of the system are introduced. A suitable demodulation program and filtering algorithm are designed to demodulate the original Doppler signal. In the range of peak shock acceleration of 1 × 104 g ~ 2.5 × 105 g and shock pulse width of 20 ~ 50 μs, the semi-sinusoidal shock waveform is absolutely reproduced. Finally, the uncertainty components affecting the measurement results are evaluated. The measurement uncertainty of ultra-high shock acceleration is 8%, which is of great significance for the calibration of shock acceleration above 2 × 105 g. |
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| 中文关键词: 高冲击 激光绝对法校准 多普勒信号解调 不确定度 |
| 英文关键词:high shock primary calibration by laser interferometry Doppler signal demodulation uncertainty |
| 基金项目: |
| DOI：10.11823/j.issn.1674-5795.2022.06.12 |
| 引用本文：刘格格, 吕东锴, 刘科, 廖舒琅, 王聪, 何斌.基于激光多普勒原理的超高冲击加速度校准系统[J].计测技术,2022,(6):. |
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