Abstract：In this paper, the electromagnetic induction principle of B-probe is analyzed, and it is pointed out that there is a certain error in measuring the time when armature passes through its position using B-probe. The principle of measuring the velocity of armature in the bore of electromagnetic railgun by B-probe and laser is introduced respectively. The system of laser measuring armature position with fast response and high precision is built. A comparative experiment of measuring armature velocity by B-probe and laser is designed. Some experimental data are obtained. The signal waveform of laser measuring armature passing through is analyzed. The uncertainty error of armature velocity measured by laser is analyzed and calculated. Based on the armature velocity measured by laser, the precision of armature velocity measured by B-probe is calculated, and the precision of armature velocity measured by B-probe is obtained. Through the experimental research and analysis, it has a certain reference value in engineering application.
李菊香, 曹斌, 范志国, 国伟, 陈彦辉. B探针测速及基于激光方法的精度研究[J]. 电工技术学报, 2020, 35(zk2): 327-332.
Li Juxiang, Cao Bin, Fan Zhiguo, Guo Wei, Chen Yanhui. Research on Speed Measurement by B-Probe and Precision Based on Laser Method. Transactions of China Electrotechnical Society, 2020, 35(zk2): 327-332.
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2020, Vol. 35 
