Research on temperature compensation technology of 3D electr

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Electronic compass is widely used in attitude measurement because of its advantages of low cost, low power consumption, small size and easy interface with digital processor. It can be used not only for a variety of manned and unmanned land, air and water equipment platforms, but also for a variety of consumer electronics products. Three-dimensional digital compass based on three-axis accelerometer and three-axis magnetic sensor can realize magnetic north Angle measurement under different attitude by sensing gravity field and geomagnetic field.



Although the performance of accelerometers and magnetic sensors has been significantly improved with the advancement of microelectromechanical system technology, errors caused by inconsistent sensitivity coefficients, non-orthogonality, bias, and unique characteristics of magnetic sensors will still be introduced during sensor production and installation. Soft and hard magnetic interference errors cause the original output of the three-axis sensor to be inconsistent with the three components on the coordinate axes of the body coordinate system. Therefore, in order to obtain high-precision attitude information, digital compass still needs to be calibrated and compensated before use.

The full article: www.ericcointernational.com/application/research-on-temperature-compensation-technology-of-3d-electronic-compass.html

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