石英振梁加速度计温度补偿方法研究  

Research on Temperature Compensation Method for Quartz Vibrating Beam Accelerometer

作　　者：李波[1] 焦舰 董鑫宇 李村[1] 白冰 赵玉龙[1] LI Bo;JIAO Jian;DONG Xinyu;LI Cun;BAI Bing;ZHAO Yulong(State Key Laboratory for Manufacturing Systems Engineering,Xi’an Jiaotong University,Xi’an 710049;Shanghai Inertial Engineering Technology Research Center,Shanghai Academy of Spaceflight Technology,Shanghai 201109)

机构地区：[1]西安交通大学精密微纳测试技术全国重点实验室,西安710049 [2]上海航天控制技术研究所上海惯性工程技术研究中心,上海201109

出　　处：《导航与控制》2024年第3期1-12,33,共13页Navigation and Control

基　　金：国家重点研发计划(编号:2021YFB3201500);上海航天科技创新基金(编号:SAST2023-056)。

摘　　要：针对石英振梁加速度计受工作环境温度变化产生温度漂移的问题,对比分析了基于VCR模型和BP神经网络模型的构建方法,通过数据样本验证了两种补偿算法的可行性。并搭建了加速度计性能测试系统,验证两种补偿方法的补偿效果。实验结果表明,两种补偿模型能显著提升加速度计的温度稳定性,零偏温度系数降低近两个数量级,标度因数温度系数降低了一个数量级。VCR模型温度补偿后,零偏温度系数为14.285μg/℃,标度因数温度系数为-4.2×10^(-6)/℃;BP模型温度补偿后,零偏温度系数为13.326μg/℃,标度因数温度系数为-8.808×10^(-6)/℃,VCR模型在石英振梁加速度计标度因数补偿方面展现出一定的优势。The construction methods based on VCR model and BP neural network model are compared and analyzed to address the problem of temperature drift caused by temperature changes in the working environment of quartz vibrating beam accelerometer.The feasibility of the two compensation algorithms is verified through data samples.And an accelerometer performance testing system is built to verify the compensation effects of the two compensation methods.The experimental results show that the two compensation models can significantly improve the temperature stability of the accelerometer,with a decrease of nearly two orders of magnitude in the zero bias temperature coefficient and a decrease of one order of magnitude in the scale factor temperature coefficient.After temperature compensation in the VCR model,the zero bias temperature coefficient is 14.285μg/℃,with a scaling factor temperature coefficient of-4.2×10^(-6)/℃.After temperature compensation in the BP model,the temperature deviation coefficient is 13.326μg/℃,with a scale factor temperature coefficient of-8.808×10^(-6)/℃,the VCR model has shown certain advantages in scale factor compensation of quartz vibrating beam accelerometer.

关 键 词：振梁加速度计 可变系数回归法 BP神经网络法 温度补偿 

分 类 号：TP24[自动化与计算机技术—检测技术与自动化装置]