基于相关向量机的石英加速度计温度误差补偿方法  

RVM-based temperature error compensation method for quartz accelerometer

作　　者：宁云晖 赵凤昊 王凯 李硕 尚岳 NING Yun-hui;ZHAO Feng-hao;WANG Kai;LI Shuo;SHANG Yue(Naval Academy,Beijing 100161,China;Tianjin Institute of Nautical Instruments,Tianjin 300131,China)

机构地区：[1]海军研究院,北京100161 [2]天津航海仪器研究所,天津300131

出　　处：《舰船科学技术》2023年第21期171-176,共6页Ship Science and Technology

摘　　要：加速度计测量误差决定了惯导系统中位置、姿态、速度等导航信息精度。针对环境温度变化对加速度计测量精度的影响展开讨论,分析了工作温度与测量误差间的关系;提出一种基于相关向量机(Relevance vector machine, RVM)的加速度计温度误差建模及补偿方法,能够实现温补模型参数的准确与快速解算。结果表明,补偿后的加速度计在10℃~50℃的温度范围内测量误差减小了50%以上,提高了其对环境温度变化的适应能力。The accuracy of the position,attitude,and speed in navigation system is largely determined by the accuracy of accelerometer.Discussion was made in this paper,which is about the relationship between the errors and the temperature.Furthermore,a relevance vector machine based modeling and compensation method was proposed,which could compensate the temperature errors accuracy and rapidly.The result of verification experiment shows that,the measurement error of the accelerometer reduced by 50%at a temperature period of 10℃~50℃,whichcouldimprovetheadaptability tothetemperat-ure variations.

关 键 词：加速度计 温度误差补偿 相关向量机 

分 类 号：U666.12[交通运输工程—船舶及航道工程]