Motor control method and device, motor and power tool

Abstract

The present disclosure relates to a motor control method and device, a motor and a power tool. The method includes: acquiring a Kth input rotor angle and a first output rotor angle corresponding to the K-1th input rotor angle, where K≥1 and is Integer; obtain the angle difference according to the Kth input rotor angle and the first output rotor angle; adjust the angle difference to obtain the angle increment; obtain the Kth input rotor according to the angle increment The second output rotor angle corresponding to the angle; and the magnetic field steering control of the motor is performed according to the second output rotor angle. The embodiment of the present disclosure can obtain a smoother angle output, reduce the noise when the motor is running, and obtain a more stable torque output, so that the motor runs stably and has high efficiency.

Description

technical field

[0001] The present disclosure relates to the technical field of control, and in particular, to a motor control method and device, a motor and an electric tool. Background technique

[0002] Hall sensors can detect magnetic fields and their changes, and can be used in various fields related to magnetic fields. Hall sensors are based on the Hall effect and have many advantages. Their structure is firm, small in size, light in weight, long in life, easy in installation, low in power consumption, high in frequency (up to 1MHZ), resistant to vibration and not afraid of dust , oil pollution, water vapor and salt spray pollution or corrosion, etc., play an important role in the motor.

[0003] However, the current angle estimation technology based on the Hall sensor has the phenomenon of sudden change in the estimated angle and unevenness, which makes the motor run unstable and has low efficiency. SUMMARY OF THE INVENTION

[0004] According to an aspect of the p...

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