摘要
温度误差在电容式加速度微传感器总误差中占有很大的比重,因此温度补偿的好坏直接影响着传感器的测量精度。文中在分析SD1221加速度传感器受温度影响变化规律基础上,提出了一次线性预测修正方法,得到该补偿方法的硬件实现电路,并对采用该补偿电路前后的误差进行了测试与比较。实际测试表明:该方法可以有效降低温度变化的影响,简化修正过程,满足宽温度范围使用要求。
Temperature error was in a large proportion of the total error for micro-capacitive acceleration sensor, so temperature compensation quality had a direct impact on the measurement accuracy of the sensor. Based on the analysis of changes affected by temperature for acceleration sensor SD1221, a linear forecast amendment method was put forward, and the hardware implementation circuit of the compensation method was obtained. The tests and comparisons before and after compensation were made. The actual tests show that the method can reduce the impact of temperature changes effectively, simplify the amendment process and meet the requirements of a wide temperature range.
出处
《仪表技术与传感器》
CSCD
北大核心
2009年第6期93-94,97,共3页
Instrument Technique and Sensor
关键词
SD1221
温度补偿
预测修正
SD1221
temperature compensation
forecast amendments
