悬丝支承型加速度计静态温度模型辨识及温度补偿方法研究  

Study of the Identification for the Static Temperature Model and the Method for Compensating Temperature of Pendulous Accelerometer

作　　者：李园晴[1,2] 傅山[1] 庞秀枝[2] 

机构地区：[1]上海交通大学,上海200240 [2]中国空空导弹研究院,河南洛阳471009

出　　处：《计测技术》2012年第5期13-17,共5页Metrology & Measurement Technology

摘　　要：为了消除环境温度变化对悬丝支承型加速度计精度的影响,采用最小二乘法拟合建立了-50～68℃温度范围内加速度计模型系数零偏K0和标度因数K1的温度模型。由TMS320F2812 DSP和测温模块LM47172组成的硬件系统,根据温度模型对加速度计输出进行补偿后,加速度计输出的拟合均方根误差保持在10-4g数量级以内,比未采用温度补偿时提高了一个数量级,补偿效果明显。To eliminate the impact of temperature on accelerometer,by using the method of least square fitting,the static temperature model of the accelerometer within-50~ ＋68℃ has been established.The hardware system is composed of DSP（TMS320F2812） and temperature module（LM47172）.After temperature compensation with the above model by the system,the magnitude of output change is 10-4g,which is better than that without temperature compensation,and the stability of the accelerometer output has a significant improvement.

关 键 词：悬丝支承型加速度计 零偏 标度因数 温度模型辨识 温度补偿 

分 类 号：TB934[一般工业技术—计量学] TB942[机械工程—测试计量技术及仪器]