摘要
设计了一种能测量倾角或加速度的新型磁性液体惯性传感器,该传感器采用霍尔元件作为转换元件,将惯性质量块受加速度作用而引起的变化磁场转化为电压信号。采用有限元软件分析得到回复力、霍尔元件处磁场均与惯性质量块位移呈线性关系;结合力与加速度在一定范围内的比例关系和霍尔元件输出特性曲线,得到传感器输出电压与加速度在一定范围内的线性关系。对传感器进行了静态和动态实验研究,实验结果表明传感器的静态输出特性曲线与理论值基本一致,固有频率与理论值基本相符,验证了设计方案的合理性。
A new type of magnetic liquid inertial sensor was designed, which can measure inclination or acceleration.The sen- sor,which used Hall element as conversion component, converted the changing magnet field caused by the mass＇s moving because of acceleration into voltage signal.It was analyzed that both the restoring force and the magnetic field at the hall element were in a linear relationship with the inertia mass block＇s displacement by finite element software.The linear relationship between the output voltage and the acceleration of the sensor was obtained by the relation of the force and the acceleration and the output characteris- tic curve of Hall element.Results of the sensor of static and dynamic experiments show that the sensor＇s output characteristic curve and the theoretical value are basically identical. The inherent frequency is consistent with the theoretical value approximately. It verifies the rationality of design scheme.
出处
《仪表技术与传感器》
CSCD
北大核心
2017年第2期23-26,共4页
Instrument Technique and Sensor
基金
河北省自然科学基金(E2015202241)
