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Motor control method, device, terminal device and storage medium

A motor control and control signal technology, which is applied in the direction of AC motor control, motor vibration suppression control, control system, etc., can solve the problem that the PWM control signal affects the motor control accuracy, and achieve the effect of improving accuracy

Active Publication Date: 2022-07-22
SHEN ZHEN 3IROBOTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a motor control method, device, terminal equipment and storage medium, which can solve the problem that the deviation signal in the PWM control signal affects the control accuracy of the motor

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] The precision value of the PWM control signal is 1%, the duty cycle of the PWM control signal input at the current time is 35%, the duty cycle of the acquired preprocessing signal is 35.3%, and the compensation factor is 0.5. Since the precision value of the PWM control signal is 1%, the duty cycle set can be obtained as {0, 1%, 2%, 3%, ..., 100%}, and the preset pointing value set is {0, 1, 2, 3, ..., 100}.

[0100] The compensation value m is:

[0101]

[0102] Then the target pointing value M=35, the M+1th pointing value in the pointing value set is 36, and the duty cycle associated with 36 in the duty cycle set is 35%, then the target duty cycle is 35%, which is the same as the input PWM The duty cycle of the control signal is the same.

[0103] If the ordinary control method is used, the motor will be controlled by the PWM control signal with a duty cycle of 35.3%. After using this method, the duty cycle of the control motor operating signal is the duty cycle ...

Embodiment 2

[0105] The precision value of the PWM control signal is 2%, the duty cycle of the PWM control signal input at the current time is 36%, the duty cycle of the acquired preprocessing signal is 36.3%, and the compensation factor is 0.5. Since the precision value of the PWM control signal is 2%, the duty cycle set can be obtained as {0, 2%, 4%, 6%, ..., 100%}, and the preset pointing value set is {0, 1, 2, 3, ..., 50}.

[0106] The compensation value m is:

[0107]

[0108] Then the target pointing value M=18, the M+1th pointing value in the pointing value set is 19, and the duty cycle associated with 19 in the duty cycle set is 36%, then the target duty cycle is 36%, which is the same as the input PWM The duty cycle of the control signal is the same.

[0109] If the ordinary control method is used, the motor will be controlled by the PWM control signal with a duty cycle of 36.3%. After using this method, the duty cycle of the control motor operating signal is the duty cycle o...

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Abstract

The present application is applicable to the technical field of motor control, and provides a motor control method, device, terminal device and storage medium. The above motor control method obtains a PWM control signal, obtains a plurality of pulse segment signals from the PWM control signal, and then calculates The duty cycle of each pulse segment signal is calculated, and the absolute value of the difference between the duty cycles of any two pulse segment signals is calculated to obtain a plurality of absolute difference values. When any absolute difference is greater than or equal to the preset value, it means that there is a large deviation in the duty cycle of the PWM control signal, which is an ineffective signal. At this time, the motor is controlled according to the last valid PWM control signal, so as to ensure the control of the motor. The working PWM control signal is a precise signal, which improves the precision of motor control.

Description

technical field [0001] The present application belongs to the technical field of motor control, and in particular, relates to a motor control method, device, terminal device and storage medium. Background technique [0002] The current motor control principle of sweepers and vacuum cleaners is as follows: periodically obtain a pulse signal with a set period in the input PWM (Pulse Width Modulation, pulse width modulation) control signal, calculate the duty cycle of the pulse signal, and then apply the pulse signal to the pulse signal. Simple filtering is performed, and the motor is controlled according to the duty cycle of the processed pulse signal. [0003] When the PWM control signal is affected and has a large deviation, the duty cycle of the obtained pulse signal will also have a large deviation, which will cause the motor speed to fluctuate and affect the control accuracy of the motor. SUMMARY OF THE INVENTION [0004] The embodiments of the present application prov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P23/04H02P27/08
CPCH02P23/04H02P27/08
Inventor 杨勇宫海涛颜世智
Owner SHEN ZHEN 3IROBOTICS CO LTD
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