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| 一种基于FPGA的激光干涉低频振动校准方法 | |
| 引用本文： | 王朝,蔡晨光,杨明,孔明,郭天太,赵军. 一种基于FPGA的激光干涉低频振动校准方法[J]. 激光杂志, 2020, 41(2): 11-14. DOI: 10.14016/j.cnki.jgzz.2020.02.011 |
| 作者姓名： | 王朝 蔡晨光 杨明 孔明 郭天太 赵军 |
| 作者单位： | 中国计量大学计量测试工程学院,杭州310018;中国计量科学研究院,北京100029;北京化工大学,北京100029 |
| 摘 要： | 针对现有外差激光干涉法存在低频振动校准时采集及处理数据量大,导致处理系统内存不足或处理时间长等问题。基于FPGA的外差激光干涉仪输出S/PDIF信号解码提出了一种低频加速度计振动校准方法,其能够在减少数据处理量的同时保证校准精度。实验结果表明,该方法能够实现0. 1～10 Hz频率范围内的高精度灵敏度幅值与相位校准。 |
| 关 键 词： | 振动校准 外差激光干涉法 低频加速度计 FPGA S/PDIF |
A method of interferometer low-frequency vibration calibration based on FPGA |
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| WANG Zhao,CAI Chenguang,YANG Ming,KONG Ming,GUO Tiantai,ZHAO Jun. A method of interferometer low-frequency vibration calibration based on FPGA[J]. Laser Journal, 2020, 41(2): 11-14. DOI: 10.14016/j.cnki.jgzz.2020.02.011 | |
| Authors: | WANG Zhao CAI Chenguang YANG Ming KONG Ming GUO Tiantai ZHAO Jun |
| Affiliation: | (Collage of Metrology&Measurement Engineering,China Jiliang University,Hangzhou Zhejiang 310018,China;National Institute of Metrology,Beijing 100029,China;Beijing University of Chemical Technology,Beijing 100029,China) |
| Abstract: | The current heterodyne interferometry has the problems of large amount of sampling data,long processing time,and etc.In this study,a low-frequency accelerometer vibration calibration method is proposed based on FP・GA to decode the output S/PDIF signal of heterodyne interferometer,which can dramatically shorten the processing time while ensuring calibration accuracy.Experimental results demonstrate that the proposed method can achieve high-accuracy sensitivity magnitude and phase vibration calibration in frequency range from 0.1 to 10 Hz. |
| Keywords: | vibration calibration heterodyne interferometry low-frequency accelerometer FPGA S/PDIF |
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