Motor control method, device and computer readable storage medium

A motor control and controller technology, applied in the direction of single motor speed/torque control, current controller, software algorithm control, etc., can solve problems such as insufficient motor control

Active Publication Date: 2020-08-25
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present disclosure provides a motor control method, device and computer-readable storage medium to solve the problem of inaccurate motor control in the related art

Method used

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  • Motor control method, device and computer readable storage medium
  • Motor control method, device and computer readable storage medium
  • Motor control method, device and computer readable storage medium

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Embodiment Construction

[0056] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0057] figure 1 It is a flow chart of a motor control method shown in an exemplary embodiment of the present disclosure. Such as figure 1 As shown, the method includes:

[0058] S11. Sampling the current rotational speed and current of the motor.

[0059] S12. Adjust a first proportional parameter and a first integral parameter of the first proportional-integral controller according to the rotational speed difference between the rotational speed and a preset target rotational speed.

[0060] Wherein, the target rotational speed may be a rotational speed set by the user according to actual usage requirements. For example, the motor is applied to an electr...

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Abstract

The invention provides a motor control method and device, and a computer readable storage medium, used for solving the problem that the motor control is not accurate enough in related technologies. The motor control method comprises the following steps: sampling the current rotating speed and current of a motor; adjusting a first proportional parameter and a first integral parameter of a first proportional integral controller according to a rotating speed difference value between the rotating speed and a preset target speed; inputting the rotating speed difference value into the first proportional integral controller after adjusting the parameters to obtain a target current; inputting a current difference value between the current and the target current into a second proportional integralcontroller to obtain a target duty ratio; and inputting the target duty ratio to a PWM signal generator, so that the PWM signal generator outputs a motor control signal according to the target duty ratio.

Description

technical field [0001] The present disclosure relates to the field of electromechanical technology, and in particular, to a motor control method, device, and computer-readable storage medium. Background technique [0002] In some application scenarios, when the load of the motor changes due to the change of the working state of the motor, the speed stability of the brushless DC motor is affected. When using a single speed loop to control the brushless DC motor, the current motor speed is sampled through the position sensing module, and then the motor speed is input into the PI (Proportion Integration, PI) controller to obtain the target duty cycle value, PWM (Pulse Width Modulation, pulse Width modulation) signal generator can generate corresponding motor control signal according to the target duty cycle value, so as to control the motor to rotate according to the preset target speed. [0003] In the related art, the P (Proportion) parameter and the I (Integration) paramete...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/08H02P6/28
CPCH02P23/0077
Inventor 陈旭恩
Owner BYD CO LTD
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