基于MEMS传感器的运动轨迹误差补偿研究

Research on motion trajectory error compensation based on MEMS sensor

为了针对运动轨迹检测时MEMS传感器存在误差较大的问题,主要对姿态传感器的误差模型进行分析探究,并在基于MEMS传感器Hi229um为核心的运动轨迹检测系统上进行实验对比。对姿态传感器中的加速度计采用数据预处理补偿和积累误差补偿的方法。通过实验测试表明,补偿后的加速度误差在3%以内,具有良好的稳定性,且在运动过程中,运动轴的误差在3%~5%以内,具有良好的运动特性。

In order to solve the problem of large error of MEMS sensor in motion trajectory detection,the error model of attitude sensor is analyzed,and experimental comparison is made on the motion trajectory detection system based on MEMS sensor hi229um.In this paper,the method of data pre-processing compensation and accumulated error compensation is used for the accelerometer in attitude sensor.The experimental results show that the compensated acceleration error is less than 3%,which has good stability,and the error of motion axis is less than 3%~5%,which has good motion characteristics.