基于加速度计的数字倾角仪误差建模与分析*

基于加速度计的数字倾角仪在实际应用过程中，其精度在很大程度上受加速度计测量误差的影响。为了提高倾角仪的测量精度，需要对传感器本身引入的误差进行建模和分析，根据加速度计倾角仪的测量原理，得出其误差源为加速度计传感器测量误差。在对传感器的测量误差建立数学模型的基础上，通过仿真分析及实验进行验证。该误差模型不仅给出了倾角仪测量的俯仰角及滚转角的最小误差范围，还可以为传感器选型及后续的误差分析和补偿提供理论参考，具有一定的实用价值。

Modeling and Analysis of Digital Accelerometer Inclinometer's Error*

In the application of inclinometers, its accuracy is influenced by the measuring error of accelerometer. To improve the measuring precision of the inclinometer, the error of sensors itself is modeled and analyzed. According to the principle of the accelerometer inclinometer, the error source is the measure error of sensors. Then, measure error mathematic models are established, and the models are verified by simulation analysis and experiments. The models not only give the smallest error range of measured pitch and roll, but also provide theoretical reference for sensor selection and error analysis and compensation. It has certain practical values.