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.
出处
《计测技术》
2012年第5期13-17,共5页
Metrology & Measurement Technology
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
pendulous accelerometer
zero offset
scale factor
identification for temperature mode
temperature compensation
