J Shanghai Jiaotong Univ Sci ›› 2024, Vol. 29 ›› Issue (2): 280-289.doi: 10.1007/s12204-022-2524-4

• Energy and Power Engineering • Previous Articles     Next Articles

Active Magnetic Compensation Based on Parametric Resonance Magnetometer


GUO Yang1 (郭阳), LI Shaoliang2 (李绍良), HUANG Yiming1 (黄艺明), LUO Manruo1 (骆曼箬), LIU Hua1* (刘华)   

  1. (1. School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 2. Shanghai Institute of Spaceflight Control Technology; Shanghai Key Laboratory of Space Intelligent Control Technology; Shanghai Engineer Research Center of Inertia, Shanghai 201109, China)
  2. (1. 上海交通大学 电子信息与电气工程学院,上海200240;2. 上海航天控制技术研究所;上海市空间智能控制技术重点实验室;上海惯性工程技术研究中心,上海201109)
  • Accepted:2021-11-22 Online:2024-03-28 Published:2024-03-28

Abstract: Based on the parametric resonance magnetometer (PRM) theory, this paper establishes an experimental system of PRM. The experimental results are consistent with the theoretical predictions. A PRM has been developed with sensitivity of 0.5 pT/Hz1/2, which can detect the magnitude of residual magnetic field; furthermore, a proportion-integration-differentiation (PID) closed-loop magnetic compensation system of the residual magnetic field also has been realized. Compared with open-loop compensation, the PID closed-loop compensation reduces the average value of the residual magnetic field in the z-axis direction from 0.024 4 nT to −0.002 3 nT, and the mean-square error from 0.208 3 nT to 0.069 1 nT. In the same way, the average value of the residual magnetic field in the y-axis direction is reduced from 0.081 6 nT to −0.004 2 nT, and the mean-square error from 0.131 6 nT to 0.046 1 nT. The magnitude of residual magnetic fields in both directions is decreased to the order of picotesla (pT). In addition, based on the signal waveforms of the magnetometer, a method of verifying the effect of magnetic compensation is proposed.

Key words: magnetometer, parametric resonance, nuclear magnetic resonance gyroscope, magnetic compensation, proportion-integration-differentiation (PID)

摘要: 基于参数共振磁强计理论,建立了参数共振磁强计实验系统。实验结果与理论预测一致。研制了一种灵敏度为0.5 pT/Hz1/2的参数共振磁强计,可以检测残余磁场的大小;此外,还实现了剩余磁场的比例-积分-微分(PID)闭环磁补偿系统。与开环补偿相比,PID闭环补偿使z轴方向残余磁场的平均值从0.0244 nT减小到- 0.0023 nT,均方误差从0.2083 nT减小到0.0691 nT。同样,y轴方向的剩余磁场平均值从0.0816 nT减小到- 0.0042 nT,均方误差从0.1316 nT减小到0.0461 nT。两个方向的剩余磁场大小都减小到pT数量级。此外,根据磁强计的信号波形,提出了一种验证磁补偿效果的方法。

关键词: 磁强计,参数共振,核磁共振陀螺仪,磁补偿,比例-积分-微分(PID)

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