工程科学学报2017，Vol.39Issue(12)：1898-1906,9.DOI:10.13374/j.issn2095-9389.2017.12.017
基于二步法的多芯电缆非侵入式电流测量校正方法
Calibration method for the noninvasive current measurement of multicore cables based on two-step estimation
宋宪 1张勇军 1宁贝飞 1汪伟2
作者信息
- 1. 北京科技大学工程技术研究院, 北京100083
- 2. 清华大学机械工程系,北京100084
- 折叠
摘要
Abstract
The noninvasive measurement of multicore cables using space magnetic field analysis has characteristics of weak signal intensity, high sensitivity, and vulnerability to environmental or elemental interference. To calibrate the hard iron bias, soft iron bias, and scale factor of magnetoresistance sensors based on noninvasive measurements for multicore cables, a two-step estimation-based cal-ibration method was proposed. This method establishes the error-related linear matrix equations through the nonlinear transformation of the sensor output signal and undertakes nonlinear regression calculation after solving the equations, thus implementing dynamic error correction for the measurement of multicore cable current. Results show that this method can simultaneously calibrate linear and partial nonlinear errors of noninvasive current measurement devices for multicore cables.关键词
非侵入式测量/多芯电缆/二步法/校正Key words
noninvasive measurement/multicore cable/two-step method/calibration分类
信息技术与安全科学引用本文复制引用
宋宪,张勇军,宁贝飞,汪伟..基于二步法的多芯电缆非侵入式电流测量校正方法[J].工程科学学报,2017,39(12):1898-1906,9.
