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Motor Control Method

A technology of motor control and virtual spindle, applied in the direction of speed adjustment of multiple motors, which can solve the problems of large disturbance influence and unstable control process.

Active Publication Date: 2021-11-23
CHINA RAILWAY CONSTR HEAVY IND +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In related technologies, when multiple motors are running synchronously, due to the large disturbance during the operation of the motors, the existing motor control methods cannot timely and accurately control the smooth and synchronous operation of multiple motors when the motors are disturbed, and the control process is unstable.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as figure 1 As shown, the present invention provides a motor control method. There are multiple motors, and the multiple motors have the same target speed and no-load torque. The motor control method includes:

[0046] S102: Obtain the actual speed and actual torque of each motor;

[0047] S104: Fitting the speed of the virtual main shaft according to the target speed and the actual speed of each motor;

[0048] S106: Determine the rotational speed deviation of the virtual main shaft according to the rotational speed of the virtual main shaft and the target rotational speed;

[0049] S108: fitting the torque of the virtual main shaft according to the no-load torque and the actual torque of each motor;

[0050] S110: Determine the adaptive coefficient of the virtual main shaft according to the rotational speed deviation and the torque of the virtual main shaft;

[0051] S112: Determine the target torque of the virtual main shaft according to the adaptive coeffici...

Embodiment 2

[0055] Such as figure 2 As shown, on the basis of the first embodiment above, the motor control method includes:

[0056] S202: Obtain the actual speed and actual torque of each motor;

[0057] S204: Fitting the speed of the virtual main shaft according to the target speed and the actual speed of each motor;

[0058] S206: Determine the rotational speed deviation of the virtual main shaft according to the rotational speed of the virtual main shaft and the target rotational speed;

[0059] S208: Fitting the torque of the virtual main shaft according to the no-load torque and the actual torque of each motor;

[0060] S210: Determine the adaptive coefficient of the virtual main shaft according to the rotational speed deviation and the torque of the virtual main shaft;

[0061] S212: Determine the target torque of the virtual main shaft according to the adaptive coefficient;

[0062] S214: Determine the s-shaped curve function of the torque of the virtual main shaft changing ...

Embodiment 3

[0074] Such as image 3 As shown, on the basis of the foregoing embodiments, the motor control method includes:

[0075] S302: Obtain the actual speed and actual torque of each motor;

[0076] S304: Fitting the speed of the virtual main shaft according to the target speed and the actual speed of each motor;

[0077] S306: Determine the rotational speed deviation of the virtual main shaft according to the rotational speed of the virtual main shaft and the target rotational speed;

[0078] S308: Fitting the torque of the virtual main shaft according to the no-load torque and the actual torque of each motor;

[0079] S310: Setting a plurality of first preset speed ranges;

[0080] S312: Setting a plurality of first preset torque ranges;

[0081] S314: Determine the adaptive coefficient of the virtual main shaft according to the rotational speed deviation and the torque of the virtual main shaft;

[0082] S316: Determine a second preset speed range according to the adaptive c...

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Abstract

The present invention provides a motor control method, comprising: obtaining the actual rotational speed and actual torque; fitting the rotational speed of the virtual main shaft according to the target rotational speed and the actual rotational speed; determining the rotational speed deviation of the virtual main shaft according to the rotational speed of the virtual main shaft and the target rotational speed; and the torque of the virtual main shaft, determine the adaptive coefficient of the virtual main shaft; determine the target torque of the virtual main shaft according to the adaptive coefficient; adjust the virtual main shaft to the target torque. The motor control method provided by the present invention fits the operation of multiple motors to the operation of the virtual main shaft, adjusts the target torque of the virtual main shaft through the self-adaptive coefficient, realizes the self-adaptive adjustment of the operation of the virtual main shaft, and then realizes the motor according to its own Adaptive adjustments are made for changes in load and running time, and through the smoothness processing of the motor torque, the smooth transition of the torque is ensured without sacrificing the control response speed, which further improves the stability of the motor control.

Description

technical field [0001] The present invention relates to the technical field of motor control, in particular to a motor control method. Background technique [0002] In the related art, when multiple motors are running synchronously, the existing motor control methods cannot timely and accurately control the stable and synchronous operation of multiple motors when the motors are disturbed due to the large disturbance during the operation of the motors, and the control process is unstable. Contents of the invention [0003] The present invention aims to solve the technical problems existing in the prior art or related art. [0004] For this reason, the present invention proposes a motor control method. [0005] In view of this, the present invention provides a motor control method. There are multiple motors, and the multiple motors have the same target speed and no-load torque. The motor control method includes: obtaining the actual speed and actual speed of each motor acc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P5/46
CPCH02P5/46
Inventor 程永亮蔡杰颜达勋陈艳谢春辉陈新兵徐福宇
Owner CHINA RAILWAY CONSTR HEAVY IND
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