基于滤波器技术的加速度传感器测量位移的分析与设计

Analysis and Design of Displacement Measurement by Accelerometer Based on Filter Technology

阐述通过加速度传感器的输出值进行二次积分获取位移,由于存在零点漂移、系统噪声和实际初始值的误差,测量结果与现实有很大的偏差,通过硬件滤波器与软件卡尔曼滤波算法进行实时校准,使测量结果趋于实际状态。

The displacement is obtained by quadratic integration of the output value of the acceleration sensor.Due to the errors of zero drift,system noise and actual initial value,the measurement results have great deviation from the reality.Through the hardware filter and software Kalman filter algorithm for real-time calibration,the measurement results tend to the actual state.