【摘要】 本文给出了一种磁流体加速度传感器的结构,分析了加速度传感器的频率特性,基于最小势能原理对所设计的磁流体加速度传感器进行了有限元动态建模,并得到系统的磁机械耦合动态模型,在此基础上得到了固有频率、静态灵敏度、阻尼比等特征参量,并以此为根据确定加速度传感器的结构参数。最后给出了实验结果,实验结果与理论预测基本相符。更多还原

【Abstract】 This paper presents the structure of magnetic fluid acceleration sensor and analyses the frequency characteristic of the sensor.The finite element dynamic model of the sensor is established based on minimum potential energy principle and the dynamic equation of the system is obtained,then some characteristic parameters such as resonance frequency,static sensitivity and damping ratio are given.The structure parameters of the acceleration sensor are determined based on these characteristic parameters.Finally the experiment result is given,which is consistent with that predicted by the theoretical model.更多还原