高精度石英振梁加速度计挠性支承设计研究

分析了石英振梁加速度计的工作原理和结构设计,确定出挠性支承的结构形式.根据力学原理给出了挠性支承的设计计算公式,并依据挠性支承的结构设计原则,确定了加速度计基本结构参数.利用有限元分析软件对该加速度计建模并进行整体的位移分布、应力特性等有限元力学分析,软件仿真结果与理论计算的摆片端部位移相差小于3%,支承在极限范围内不会断裂,证明了所建立的支承力学模型正确,这为优化结构设计提供了理论依据和方法.

Design for high-precision quartz vibrating-beam accelerometer flexure hinge

The accelerometer's principle and design were analyzed. The structure of flexure hinge was determined. The calculating formulas for designing the flexure hinge were deduced based on the mechanical principle, and the accelerometer's structural parameters were given based on the structure design principle. Using finite element analysis software, the accelerometer's model was established, and its mechanical characteristics were analyzed, including its displacement distribution and the strain, etc. The differences of pendulum-end's displacement between simulation results and calculated results are less than 3%, and the flexure hinge doesn't fracture within the limit. This proves that the theoretic models are correct and reliable, and they provide a basis for the optimization of the structure design.