摘要
磁调谐器件激励电路主要通过采样电流形成恒流源,从而获得稳定磁场,但是此方法容易出现器件频率漂移。针对现有技术存在的问题,提出一种基于磁反馈的磁调谐器件激励电路,通过采用磁传感电路检测磁场的感应电压形成反馈回路,将应力、温度、磁滞等因素的影响纳入闭环控制,从而减小甚至消除磁调谐器件的频率漂移,同时可减小器件的温升,提高可靠性。
The current magnetic tuning device excitation circuit mainly forms a constant current source by sampling the current to obtain a stable magnetic field,but this method is prone to the frequency drift of the device.This paper proposes a magnetic feedback-based excitation circuit for magnetic sensing circuit to detect the induced voltage of the magnetic field to form a feedback loop and incorporates the effects of stress,temperature and hysteresis into closed-loop control.So as to reduce or even eliminate the frequency drift of the magnetotuned device,and at the same time reduce the temperature rise of the device and improve reliability.
作者
吴江
赵勇
马金龙
李晟
王玲巧
WU Jiang;ZHAO Yong;MA Jin-long;LI Sheng;WANG Ling-qiao(Southwest Institute of Applied Magnetics,Mianyang 621000,China;Northwest Industries Group Co,Ltd,Xi’an 710043,China)
出处
《磁性材料及器件》
CAS
2023年第3期35-38,共4页
Journal of Magnetic Materials and Devices
关键词
磁调谐器件
激励电路
频率漂移
磁反馈
电路
magnetic tuning device
excitationcircuit
frequencydrift
magneticfeedback
circuit
