| 激光外差干涉技术在固体发动机振动中的应用 |
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| 引用本文： | 霍雷,曾晓东,刘兵.激光外差干涉技术在固体发动机振动中的应用[J].固体火箭技术,2012,35(1):139-142. |
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| 作者姓名： | 霍雷 曾晓东 刘兵 |
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| 作者单位： | 1. 西安电子科技大学技术物理学院,西安,710071
2. 中国航天科技集团公司四院401所,西安,710025 |
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| 摘 要： | 利用激光外差干涉技术对工作中固体火箭发动机的振动频率及强度进行了研究。在实验室环境下建立一套激光外差干涉系统,对某型号发动机进行振动测量实验。实验表明,激光外差干涉测振系统测量带宽7.8 Hz,测量标准偏差小于5.6×10-8,振镜实验测量结果与振源频率相吻合,系统探测信号强度和物体振幅呈线性关系。激光外差干涉技术在发动机振动测量过程中具有一定的应用价值。
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| 关 键 词： | 固体火箭发动机 外差干涉 振动测量 频谱分析 |
Application of laser heterodyne interferometer in solid rocket motor vibration |
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| HUO Lei
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ZENG Xiao-dong
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LIU Bing.Application of laser heterodyne interferometer in solid rocket motor vibration[J].Journal of Solid Rocket Technology,2012,35(1):139-142. |
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| Authors: | HUO Lei ZENG Xiao-dong LIU Bing |
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| Institution: | 1.School of Technology Physics,Xidian University,Xi’an 710071,China; 2.The 401st Institute of the Fourth Academy of CASC,Xi’an 710025,China) |
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| Abstract: | The vibration frequency and intensity of the solid rocket motor in operation were studied by laser heterodyne interferometer.For experiment vibration system of engine model,a laser heterodyne interferometer system in laboratory condition was established.Experiments show that the measurement bandwidth of laser heterodynes interferometer vibration system is 7.8 Hz,and measurement standard deviation is less than 5.6×10-8.Glass vibration experimental results coincide with the local oscillator frequency,and signal strength exhibits a linear relationship with the amplitude of the system.Laser heterodyne interferometry is applicable in engine vibration measurement process. |
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| Keywords: | solid rocket motor heterodyne interference vibration measurement spectrum analysis |
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