Method for correcting deviation of coordinate axis of inertial sensor

Abstract

The invention belongs to the field of sensors, and discloses a method for correcting the deviation of a coordinate axis of an inertial sensor. The method is mainly used for eliminating a sampling error caused by the deviation of the coordinate axis due to the wrong placement position of the inertial sensor which is placed on an objected to be measured. The method is simple, convenient and fast to use; the method does not need other devices, thus being low in cost; the method can be used for carrying out high-precision correction on the deviation of the coordinate axis of the inertial sensor.

Description

Technical field [0001] The invention belongs to the field of sensors, and particularly relates to a method for correcting the offset of the coordinate axis of an inertial sensor. Background technique [0002] Inertial sensors are sensors that detect and measure acceleration, tilt, shock, vibration, rotation, and motion with multiple degrees of freedom. Inertial sensors include accelerometers and angular velocity sensors (gyros) and their single, dual, and three-axis combinations. Most of the inertial sensors on the market now integrate three-axis accelerometers and three-axis gyroscopes. They are usually small, cheap, and easy to use, so they are widely used in data measurement, especially in the aerospace and wearable devices. Through the inertial sensor, the acceleration, angular velocity and attitude of the object can be measured. [0003] However, because the inertial sensor is small and exquisite, the coordinate axis is often offset during the manufacturing and welding proces...

AI Technical Summary

Problems solved by technology

[0003] However, due to the small size of the inertial sensor, the coordinate axis deviation often occurs during the production and welding process. When it is placed on the measured object, it often deviates from the ideal position due to factors such as the uneven surface of the measured object. Therefore, Correcting the coordinate axis of the inertial sensor is of great significance for improving the measurement accuracy

At present, the existing methods of correcting the coordinate axis of the sensor often require additional equipment, and most of them are corrected for the coordinate offset of the sensor itself (that is, the deviation between the actual coordinate system and the marked coordinate system), while often ignoring the sensor The deviation from the coordinate axis of the measured object due to irregular placement when placed on the measured object

Images