Solutions for MEMS sensor fusion

摘要

Sensor fusion solves key motion sensing performance issues of 6-axis modules consisting of a 3-axis accelerometer and a 3-axis gyroscope or a 3-axis accelerometer and a 3-axis magnetic sensor. 1) A 6-axis inertial module with an accelerometer and a gyroscope loses its absolute orientation as the gyro drifts over time, requiring calibration to restore accurate heading reference. 2) A 6-axis module with accelerometer and magnetometer is prone to data corruption in the presence of ferrous materials in the environment....