High-rotating-speed DC brushless motor control system and control method thereof

Abstract

The invention discloses a high-rotating-speed DC brushless motor control system which comprises the components of an annular circuit board, a rectifying module, a controller, an inverter module and three Hall sensors, wherein the rectifying module, the controller and the inverter module are arranged on the circuit board, and the Hall sensors are distributed on the circuit board. The circuit boardis fixedly connected with the stator of the DC brushless motor, and furthermore a central through hole matches the rotor of the DC brushless motor. The stator, the rotor and the circuit board are coaxially arranged. The Hall sensors are in communication connection with the controller. According to the high-rotating-speed DC brushless motor control system, a power supply is connected with the controller through the rectifying module; The controller is connected with the DC brushless motor through the inverter module. The three Hall sensors are parallelly connected between the controller and theDC brushless motor. The Hall sensor acquires the current position signal of the DC brushless motor and performing feedback to the controller.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a high-speed DC brushless motor control system and control method. Background technique [0002] The speed of the high-speed brushless DC motor is thousands of revolutions or even more than 10,000 revolutions per minute. When the rotor of the high-speed brushless DC motor starts from a static state, increases the speed and runs stably, it is necessary to introduce a motor control system to operate it. Full control can improve its operating efficiency and reduce the risk of misoperation. The existing control system cannot accurately control the brushless DC motor at high speed. [0003] However, the existing control methods for low-speed DC brushless motors have great limitations in high-speed DC brushless motors, which pose hidden dangers to the stable operation of the motor. Contents of the invention [0004] The object of the present invention is to provide a high-spee...

AI Technical Summary

Problems solved by technology

[0002] The speed of the high-speed brushless DC motor is thousands of revolutions or even more than 10,000 revolutions per minute. When the rotor of the high-speed brushless DC motor starts from a static state, increases the speed and runs stably, it is necessary to introduce a motor control system to operate it. Full control can improve its operating efficiency and reduce the risk of misoperation. The existing control system cannot accurately control the DC brushless motor at high speed

[0003] However, the existing control methods for low-speed brushless DC motors have great limitations in high-speed brushless DC motors, which pose hidden dangers to the stable operation of the motor

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