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A motor electric field phase zero point correction system and correction method

A correction method and phase technology, applied in the direction of electronic commutator, etc., can solve the problems of zero point positioning deviation, current imbalance, mass production and maintenance troubles, etc., achieve accurate zero point correction alignment, avoid current imbalance, step operation easy effect

Active Publication Date: 2018-02-09
CHONQING HUASHU ROBOT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to reasons such as the consistency of the external circuit, the current flowing to the V and W phases may be unbalanced, resulting in a deviation in zero point positioning
Not only the positioning accuracy cannot be guaranteed, but also it will affect the subsequent use of the motor
Bring troubles to mass production and maintenance

Method used

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  • A motor electric field phase zero point correction system and correction method

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the specific embodiments and drawings.

[0032] Such as figure 1 As shown, the motor electric field phase zero point correction system includes a servo drive and an encoder, which is an absolute encoder. A U-phase current receiving control module and a V-phase current output control module are arranged inside the servo drive, both of which are used to control the current stable input or output of the permanent magnet AC servo motor Current loop PWM timing control module.

[0033] The U-phase current receiving control module of the servo drive is connected to the U-phase winding of the motor, and is used to control the U-phase DC output from the U-phase of the motor M;

[0034] The V-phase current output control module is connected with the V-phase winding of the motor, and is used to control the input of the V-phase direct current from the V-phase of the motor M;

[0035] The signal i...

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Abstract

A motor electric field phase zero correction system and correction method, the U-phase current receiving control module of the servo driver is connected to the U-phase winding of the motor, the V-phase current output control module is connected to the V-phase winding of the motor, and the signal input and output terminals of the servo driver The group is connected with the signal input and output terminals of the encoder. The V-phase and U-phase of the motor are connected in series to input and output direct current less than the rated current respectively, and the step distance calculation is used to correct the phase zero point, which avoids the current imbalance when the V-phase and W-phase are connected in parallel in the prior art, and the method steps are easy to operate , the alignment of the zero point calibration is accurate, and the calibration efficiency is high.

Description

technical field [0001] The invention relates to a motor electric field phase zero point correction system of a permanent magnet AC servo motor and a method for using the system to correct the motor electric field phase zero point. Background technique [0002] Before the permanent magnet AC servo motor is used, the motor usually needs to perform zero point correction of the electric field phase to achieve the purpose of the orthogonality between the electromagnetic field and the permanent magnetic field, so that the motor output effect is the best. However, the difference in the zero point calibration method not only has a great impact on the accuracy of the calibration position, but also has a huge impact on the efficiency of mass production and the convenience of subsequent maintenance. [0003] At present, the zero point phase correction of the permanent magnet AC servo motor is usually to pass a DC current smaller than the rated current to the motor winding to locate the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/17
Inventor 李令夏亮肖敏谭先锋李雄王群杨海滨
Owner CHONQING HUASHU ROBOT CO LTD
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