2D hall type combination switch rotation gear calibration method

Abstract

This invention relates to a method for calibrating the rotary gear position of a 2D Hall effect combination switch. The system comprises a host computer, a CAN bus testing device, a PLC controller, a torque sensor, a servo motor mechanism, a second incremental encoder, a combination switch MCU, a 2D Hall sensor, and a magnet. The PLC controller receives a start signal, and the CAN bus testing device reads the initial gear position Hall angle data of the rotary handle, determines its passability, and completes the initial gear position calibration. The servo motor mechanism drives the rotary handle to rotate to the target upward gear position, simultaneously acquiring torque and motor rotation angle to form a two-dimensional array. The combination switch MCU calculates the Hall magnetic field deviation angle and forms a two-dimensional array with the encoder rotation angle. The host computer determines the angle corresponding to the gear position torque point based on the array, matches the Hall magnetic field deviation angle, and writes it to the product to complete the upward rotation calibration. After the rotary handle resets, it rotates to the target downward gear position to complete the downward rotation calibration. This method achieves automated calibration and solves the problems of low gear position calibration accuracy and data asynchrony.

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