摘要
针对未来微卫星、纳卫星及皮卫星平台的应用需求,介绍了一种基于巨磁阻抗(GMI)效应的微型化三轴磁强计。微型化三轴磁强计采用非线性非对角化巨磁阻抗效应原理制备敏感元件;采用相敏检波方式设计信号处理电路,并对磁强计电路进行了集成化芯片工艺的设计研发。研制的样机在±500mGs磁场下的输出为0～5V。0.1～10Hz频率范围内的噪声小于RMS 200pT;频谱密度噪声小于20pT/Hz^(1/2)@1Hz。
In order to meet the application requirements of microsatellite,nano-satellite and pico-satellite platforms in the future,a miniaturized three-axis magnetometer based on giant magneto-impedance(GMI)effect is introduced.The miniaturized triaxial magnetometer fabricates sensitive elements based on non-linear non-diagonal giant magneto-impedance effect,using phase-sensitive detection method to design signal processing circuit,and developing the circuit chip which integrates the circuit of the miniature magnetometer.The output of prototype is 0~5V during±0.5Gs magnetic field.The noise in 0.1~10Hz frequency range is less than RMS 200pT,and the spectrum density noise is less than 20pT/Hz@1Hz.
作者
王江涛
潘海林
张清
WANG Jiangtao;PAN Hailin;ZHANG Qing(School of Computer Science and Software Engineering,East China Normal University,Shanghai 200062)
出处
《飞控与探测》
2019年第2期59-63,共5页
Flight Control & Detection
关键词
磁强计
巨磁阻抗
集成芯片
GMI
magnetometer
giant magneto impedance
integrated chip
GMI
