论文部分内容阅读
针对传统弹簧式重力仪对水平向干扰敏感、体积大的缺点,提出了一种基于空间十字形挠性支撑结构的相对重力敏感器,并论述了该结构的工作原理。重点就空间十字型摆组件和力矩器进行分析:基于Euler-Bernoulli梁理论建立静力平衡稳定态结构模型;基于动力学方程建立振动系统动态模型;基于磁场分析设计力矩器;并利用有限元方法分别进行仿真验证。分析结果表明:该设计结构合理、性能良好、理论分辨率为3.7μGal,样机分辨率为4.1μGal,满足重力加速度的测量要求。
Aiming at the shortcomings of traditional spring gravimeter sensitive to horizontal interference and large volume, a relative gravity sensor based on space cruciform flexible support structure is proposed, and the working principle of this structure is discussed. In this paper, we focus on the analysis of the space cruciform assembly and the torque converter. The static equilibrium steady state model is established based on the Euler-Bernoulli beam theory. The dynamic model of the vibration system is established based on the dynamic equations. The torque converter is designed based on the magnetic field analysis. Respectively, to verify the simulation. The analysis results show that the design has a reasonable structure and good performance. The theoretical resolution is 3.7μGal and the prototype resolution is 4.1μGal, which meets the measurement requirements of gravitational acceleration.