Direct current motor, starting control method and device thereof, air conditioner and storage medium

Abstract

The invention provides a direct current motor and a starting control method and device thereof, an air conditioner and a storage medium, and the method comprises the steps: detecting that a controller of the direct current motor is powered on, and obtaining an initial duty ratio corresponding to the direct current motor pre-stored in the controller; when the initial duty ratio is zero, performing self-learning on the initial duty ratio to obtain a target duty ratio; and controlling the direct current motor to start according to the target duty ratio. According to the method, when the initial duty ratio is zero, self-learning is performed on the initial duty ratio, the target duty ratio, namely the optimal starting voltage of the direct-current motor, is obtained, and when the direct-current motor starting instruction is received, the direct-current motor is controlled to be started according to the target duty ratio, so that the starting voltage is prevented from being too large or too small; the problems of overlarge starting jitter of the direct current motor, overshoot of the rotating speed and delay of motor starting caused by replacement of the motor and the controller are solved, and the problem that the motor and the controller cannot be well controlled due to replacement of the motor and the controller is solved, so that the stability and the reliability during starting of the direct current motor are improved.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, and in particular, to a direct current motor and a start-up control method and device thereof, an air conditioner and a storage medium. Background technique [0002] At present, there are many starting methods for DC motors, but most of them are started with a fixed duty cycle. If a fixed duty cycle is used to start, there may be a problem that the starting voltage is not the optimal starting voltage. If the starting voltage is too high, the motor There will be serious jitter during startup, and even startup failure will occur. If the startup voltage is too low, it will take more time to increase the duty cycle from the low duty cycle to the one that can be started, which will make the dynamic response of the motor slower and affect the user experience. [0003] And, for different motors or different controllers, the starting voltage values ​​of different motors are different. A...

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Problems solved by technology

[0002] At present, there are many starting methods for DC motors, but most of them use a fixed duty cycle to start. If a fixed duty cycle is used to start, there may be a problem that the starting voltage is not the best starting voltage. If the starting voltage is too high, the motor There will be severe jitter when starting, or even start failure. If the starting voltage is too low, it will take a lot of time to increase from a low duty cycle to a duty cycle that can be started, which will make the dynamic response of the motor slower and affect the user experience

[0003] And, for different motors or different controllers, the starting voltage values ​​of different motors are different. At the same time, due to the differences in the hardware of different control boards, starting with a fixed duty cycle will cause the motor and controller to fail to control normally. question

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