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Motor control method and device, equipment and storage medium

A control method and closed-loop control technology, applied in the direction of single motor speed/torque control, etc., can solve the problems of motor equipment damage, current impact, time-consuming, etc., to avoid motor deceleration, improve safety, and improve accuracy and reliability Effect

Pending Publication Date: 2021-06-11
SZ DJI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the motor without position sensor, when the motor is in the state of high-speed remote rotation when starting, the switch dragging or high-frequency injection method generally used will generate a huge current impact, which will cause damage to the motor equipment
It will take a certain amount of time to wait for the motor to stop on its own before restarting, and serious accidents will occur in specific scenarios. For example, the motor of the UAV will directly cause the UAV to crash.

Method used

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  • Motor control method and device, equipment and storage medium
  • Motor control method and device, equipment and storage medium
  • Motor control method and device, equipment and storage medium

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0036] The flow charts shown in the drawings are just illustrations, and do not necessarily include all contents and operations / steps, nor must they be performed in the order described. For example, some operations / steps can be decomposed, combined or partly combined, so the actual order of execution may be changed according to the actual situation.

[0037] Some implementations of the present application will be described in detail below in conjunction with the ac...

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Abstract

A motor control method and device, a motor device and a storage medium wherein a motor has no position sensor. The method comprises: acquiring a current electrical angular velocity of the motor by acquiring a current voltage of the motor before starting the motor (S101); if the electrical angular velocity is greater than or equal to a first preset threshold value, taking the electrical angular velocity as a feedback signal, and performing closed-loop control on the motor to start the motor; wherein the first preset threshold value is greater than zero (S102). According to the scheme, the accuracy and reliability of motor control are improved, and the safety of equipment is further improved.

Description

technical field [0001] The present application relates to the technical field of motor control, and in particular to a motor control method, device, device and storage medium. Background technique [0002] Permanent magnet motors are widely used in unmanned aerial vehicles, electric vehicles, industrial frequency converters and other fields. At present, there are mainly two ways to control the running state of the motor. One is the control based on the position sensor. The position signal and the speed signal calculated from it control the motor; the other is the control without a position sensor. [0003] For a motor without a position sensor, when the motor is in a state of high-speed remote rotation when starting, the switch dragging or high-frequency injection method generally used will generate a huge current impact, resulting in damage to the motor equipment. It will take a certain amount of time to wait for the motor to stop on its own before restarting, and serious ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/06H02P6/08
CPCH02P6/06H02P6/08
Inventor 李福
Owner SZ DJI TECH CO LTD
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