石英挠性加速度计力矩器仿真建模与优化设计  

Simulation modeling and optimization design of torque converter for quartz flexible accelerometer

作　　者：许哲 徐啸 韩志强 陈崇 陈泓玮 XU Zhe;XU Xiao;HAN Zhiqiang;CHEN Chong;CHEN Hongwei(Shanghai Institute of Mechanical and Electrical Engineering,Shang Hai 201109,China)

机构地区：[1]上海机电工程研究所,上海201109

出　　处：《中国惯性技术学报》2024年第5期492-498,510,共8页Journal of Chinese Inertial Technology

基　　金：国防科技技术领域基金(2022-JCJQ-JJ-1022)。

摘　　要：石英挠性加速度计中磁场性能直接影响加速度计输出精度,而力矩器是影响加速度计内部磁场的关键。因此,以石英挠性加速度计中力矩器为研究对象,采用等效磁路方法建立含补偿环元件的力矩器工作气隙磁场数学模型,以此为基础分析工作气隙磁场均匀性和磁场强度等性能,并采用多参数优化方法对力矩器系统进行整体优化。仿真结果表明,优化模型有效提升力矩器工作气隙磁场均匀性,磁场轴向极差ΔB_(R)由386.3396 mT缩小至108.2755 mT,端点极差ΔB_(D)由217.8894 mT缩小至2.1934 mT,线圈位置气隙轴向磁场几乎保持对称,从而降低加速度计输出非线性,验证了优化方案的可行性。The magnetic field performance of quartz flexible accelerometer directly affects the output accuracy of the accelerometer,and the torque converter is the key to affect the internal magnetic field of the accelerometer.Therefore,taking the torque converter of quartz flexible accelerometer as the research object,the mathematical model of the working air gap magnetic field of the torque converter with compensating ring components are established by using equivalent magnetic circuit method.Based on this,the properties of the working air gap magnetic field uniformity and magnetic field strength are analyzed,and the multi-parameter optimization method is used to optimize the whole torque generator system.The simulation results show that the optimization model improves the uniformity of the air gap magnetic field of the torque converter effectively.The axial rangeΔB_(R) is decreased from 386.3396 mT to 108.2755 mT,and the end-point rangeΔB_(D) is decreased from 217.8894 mT to 2.1934 mT.The axial magnetic field of the air gap at the coil position is almost symmetrical.Thus,the nonlinear output of the accelerometer is reduced,which verifies the feasibility of the optimization scheme.

关 键 词：石英挠性加速度计 力矩器 等效磁路 磁场均匀性 多参数优化 

分 类 号：U666.12[交通运输工程—船舶及航道工程]