Optimization on the Position Distribution and Attitude of Electromagnetic Emission Magnetic Probe Array

doi:10.3969/j.issn.1000-1093.2020.12.005

Abstract

Abstract: A calculation method for position distribution and installation attitude of magnetic probe array is proposed to obtain the armature velocity at any time in the interior ballistics of electromagnetic launch system accurately. The position distribution of magnetic probe array is determined by Douglas-Peucker algorithm. A mathematical model is established for the induced voltage of magnetic probe and the physical parameters such as installation position, track current, armature speed and displacement, and the influence of the attitude of magnetic probe on the speed measurement accuracy is studied. The installation method of the armature magnetic probe is adopted. The influences of installation mode, installation height and installation depth of magnetic probe array on the measurement accuracy of magnetic probe array were studied. The results show that the theoretical relative error of exit velocity of armature measured by the magnetic probe array is within 2‰, and the theoretical relative error of the internal ballistic armature velocity curve is within 5‰. The installation position and attitude of the magnetic probe array are tested and verified. The improved magnetic probe array has high measurement accuracy. When the armature exit velocity is 700-800 m/s, the measured average relative error of magnetic probe is 2.25%.

Key words: electromagneticemission, magneticprobearray, positiondistribution, spaceattitude, velocitymeasurementerror

CLC Number:

TJ866

WANG Zhenchun, ZHANG Yuting, BAO Zhiyong， LIU Fucai, ZHAN Zaiji. Optimization on the Position Distribution and Attitude of Electromagnetic Emission Magnetic Probe Array[J]. Acta Armamentarii, 2020, 41(12): 2408-2416.

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