摘要
弹载惯导系统通常应用于温度变化剧烈的环境,为了降低环境温度对其组件MEMS加速度计测量的影响,该文对加速度计在不同温度下的输出进行了分析。而后对加速度计零偏和标度因数进行温度建模,通过温变实验建立了加速度计温度补偿模型。利用此模型对加速度计在不同温度下的输出进行补偿。补偿结果表明,所建立的温度补偿模型可以有效地补偿加速度计温度测量误差,测量误差可降低到10^(-2)g^10^(-3)g,为其应用于后续惯性导航解算奠定一定的基础。
Missile inertial navigation system is usually applied in the environmental with severe temperature change,in order to reduce the influence of environmental temperature on the measurement of MEMS accelerometer,firstly,the output of the accelerometer at different temperatures is analyzed in this paper,then the temperature model of zero bias and scale factor of accelerometer is established,finally,accelerometer temperature compensating model is estab- lished through the temperature experiment. The output of accelerometer at different temperatures is compensated by using this model,the compensation results show that the model can effectively compensates the temperature error of accelerometer,the measurement error can be reduced to 10^-2g-10^-3 g,and it lay a foundation for the application to the following inertial navigation solution.
出处
《自动化与仪表》
2016年第4期64-67,共4页
Automation & Instrumentation
基金
山西省自然科学基金项目(2014011021-5)
关键词
微机电系统加速度计
误差
温度建模
温度补偿
micro-electro-mechanical system（MEMS）accelerometer
error
temperature modeling
temperature compensation
