一种适用于单轴MEMS倾角仪的快速标定方法及实现

A Fast Calibration Method and Realization for Single-Axis MEMS Inclinometer

针对单轴倾角仪核心元件MEMS加速度计零点电压和标度因数在反复上电后会发生改变,且在外场环境下,不能通过转台对其进行修正的问题,本文根据MEMS加速度计的安装误差、输出模型推导了单轴倾角仪的标定模型,提出了一种适用于单轴倾角仪的快速标定方法,并利用实验室研制的MEMS单轴倾角仪及LABVIEW软件编写的上位机对该方法进行了试验验证。实验表明,该快速标定方法可快速、准确地修正MEMS加速度计零点和标度因数的漂移,从而保证倾角仪的测量精度,具有良好的工程实践意义。

Aiming at the problem that The zero voltage and scale factor will change when the MEMS accelerometer of single-axis inclinometer proceed Repeated power on,can not correct zero voltage and scale factor by turntablein the field environment.this paper derives the calibration model of the single-axis inclinometeraccording to the installation error of the MEMS accelerometer and the output model,and on this basis,a rapid calibration method for single-axis inclinometer is proposed,and the experimental method was used to verify the method by using the MEMS single-axis inclinometer developed by the laboratory and the upper computer prepared by Lab VIEW software,experiments show that The rapid calibration method can quickly and accurately correct the drift of the MEMS accelerometer zero and scale factorto ensure the accuracy of the inclinometer and has good engineering practice significance.