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高斯噪声和弱正弦信号驱动的时间差型磁通门传感器

杨波 卜雄洙 王新征 于靖

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高斯噪声和弱正弦信号驱动的时间差型磁通门传感器

杨波, 卜雄洙, 王新征, 于靖

A time-difference fluxgate with Gauss noise and weak sinusoidal signal excitation

Yang Bo, Bu Xiong-Zhu, Wang Xin-Zheng, Yu Jing
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  • 提出了一种利用高斯噪声和弱正弦信号共同驱动的新型时间差型磁通门传感器. 根据软磁材料双稳态特性及其Fokker-Planck方程推导了跃迁率的表达式. 利用数值仿真的方法,研究了跃迁率和外磁场、激励磁场、噪声强度之间的关系. 通过将周期变化的跃迁率信号转换为方波信号,建立了方波高低电平时间差与外磁场之间的关系,并推导了传感器灵敏度的表达式. 研究表明,在一定的偏置磁场下,传感器灵敏度与激励磁场的幅值以及频率成反比,量程和激励磁场的幅值成正比. 对所设计±10.7 A/m量程的传感器样机进行了测试,传感器最小灵敏度为9.8696 ms/(A/m),可用于准静态微弱磁场的检测.
    A novel time-difference fluxgate sensor with weak sinusoidal and Gauss noise excitation is presented in this paper. Expression of the transition rate is derived according to the bistable peculiarity and the Fokker-Planck equation of the soft magnetic material. Relationships among transition rate, external magnetic field, amplitude of the excitation field, and noise intensity are discussed through numerical simulation. By converting the periodic transition rate signal to the square signal, the time difference between the high level and the low level of the square signal can be related with the external magnetic field. And the expression of the sensor's sensitivity is derived. Simulation results show that the sensitivity is inversely proportional to the amplitude and frequency of the excitation magnetic field, and the measuring range is proportional to the amplitude of the excitation magnetic field. Experiments have been carried out on a fluxgate prototype with a measuring range of ±10.7 A/m. The minimum sensitivity could achieve 9.8696 ms/(A/m), and the novel time-difference fluxgate can be of great interest in the detection of quasi-static extremely weak magnetic field.
    • 基金项目: 江苏省普通高校研究生科研创新计划(批准号:cxzz11_0241)和机电工程与控制国防科技重点实验室基金(批准号:9140C360203120C36134)资助的课题.
    • Funds: Project supported by the Program for Graduate Student Innovation of the Higher Education Institutions of Jiangsu Province, China (Grant No. cxzz11_0241) and the Foundation of the National Defense Science and Technology Key Laboratory of Mechanical and Electrical Engineering and Control, China (Grant No. 9140C360203120C36134).
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    Bulsara A R, Seberino C, Gammaitoni L, Karlsson M F, Lundqvist B, Robinson J W C 2003 Phys. Rev. E 67 016120

    [2]

    Andò B, Baglio S, Bulsara A R, Sacco V 2005 IEEE Sensors J. 5 895

    [3]

    Wang Y, Wu S, Zhou Z, Cheng D, Pang N, Wan Y 2013 Sensors 13 11539

    [4]

    Andò B, Baglio S, Bulsara A R, Trigona C 2009 Sensors Actuat. A: Phys. 151 145

    [5]

    Andò B, Baglio S, Malfa S L, Bulsara, A R 2011 IEEE Instrumentation and Measurement Technology Conference Hangzhou, China, May 10-12, 2011 p1

    [6]

    Li H, Wang Y G 2014 Acta Phys. Sin. 63 120506 (in Chinese) [李欢, 王友国 2014 物理学报 63 120506]

    [7]

    Zhu G Q, Ding K, Zhang Y, Zhao Y 2010 Acta Phys. Sin. 59 3001 (in Chinese) [朱光起, 丁珂, 张宇, 赵远 2010 物理学报 59 3001]

    [8]

    Yang M, Li X L, Wu D J 2012 Acta Phys. Sin. 61 160502 (in Chinese) [杨明, 李香莲, 吴大进 2012 物理学报 61 160502]

    [9]

    Lu H, Cheng D F, Wang Y Z, Zhao L X 2012 Acta Electron. Sin. 40 1701 (in Chinese) [卢浩, 程德福, 王言章, 赵兰霞 2012 电子学报 40 1701]

    [10]

    Lyons D, Mahaffy J M, Palacios A, In V, Longhini P, Kho A 2010 Phys. Lett. A 374 2709

    [11]

    Dai Z C, Du L C, Mei D C 2010 Chin. Phys. B 19 080503

    [12]

    Ando B, Baglio S, Sacco V, Bulsara A R, In V 2008 IEEE Trans. Instrum. Meas. 57 19

    [13]

    Andò B, Baglio S, Bulsara A R, Sacco V 2005 IEEE Instru. Meas. Mag. 8 64

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    Hu G 1994 Stochastic Forces and Nonlinear Systems (Shanghai: Shanghai Scientific and Technological Education Publishing House) pp140-144 (in Chinese) [胡岗 1994 随机力与非线性系统 (上海: 上海科技教育出版社) 第140–144页]

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出版历程
  • 收稿日期:  2014-06-30
  • 修回日期:  2014-07-18
  • 刊出日期:  2014-10-05

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