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No-position permanent magnet brushless direct current motor control device and control method thereof

A permanent magnet brushless DC and control device technology, which is applied in electronic commutation motor control, control systems, electrical components, etc., can solve problems such as hindering the promotion and use of brushless DC motors, hindering the development of motor equipment, and high cost. To achieve the effect of being conducive to promotion and use, low production cost and simple structure

Inactive Publication Date: 2017-02-15
SHENZHEN GAOKERUN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Compared with brushed DC motors, brushless DC motors have the characteristics of wide application range, long service life, fast speed, low energy consumption, and easy maintenance. Therefore, brushless DC motors are the main development direction of motors in the future; among them , the control method of the brushless motor is the key to the performance of the brushless DC motor, but because in the prior art, the position sampling of the brushless DC motor is based on the Hall sensor, its cost is relatively high and the structure is relatively complicated, so in Some motor equipment, such as: brushed DC motors are still used on sewing machines; it greatly hinders the promotion and use of brushless DC motors in various industries, and also hinders the development of various motor equipment

Method used

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  • No-position permanent magnet brushless direct current motor control device and control method thereof
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  • No-position permanent magnet brushless direct current motor control device and control method thereof

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0037] see Figure 1 to Figure 4 , the present invention is a control device for a positionless permanent magnet brushless DC motor, which cooperates with the motor and includes: a speed setting module 100 and a motor control module 200 connected to each other;

[0038] The speed setting module 100 is used to set the predetermined speed data of the motor;

[0039] The motor control module 200 is connected to the three phase lines of the motor, and includes: a counter electromotive force collector 201, a signal processor 202, a signal comparator 203 and a motor driver 204;

[0040] The counter ...

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Abstract

The present invention relates to the motor control technology field, especially to a no-position permanent magnet brushless direct current motor control device and a control method thereof. The control method comprises: setting the presetting rotary speed data of a motor; when the motor is running, collecting the back electromotive force on the motor, and obtaining three groups of back electromotive force electric signals; arranging the back electromotive force electric signals collected at the same time according to the presetting sequence, and obtaining position signals, wherein each position signal corresponds to the only one rotor movement region; performing statistics of all the position signals in the presetting time, obtaining the real rotary speed data, and comparing the real rotary speed data with the presetting rotary data, and if the comparison result is that the real rotary speed data is not consistent to the presetting rotary data, performing corresponding regulation control of the rotary speed of the motor according to the comparison result. The no-position permanent magnet brushless direct current motor control device and the control method thereof allow the production cost of the motor to be reduced and the structure of the motor to be simplified, and are helpful for the popularization and the application of the brushless direct current motor in many fields.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a control device for a positionless permanent magnet brushless DC motor and a control method for a positionless permanent magnet brushless DC motor. Background technique [0002] Compared with brushed DC motors, brushless DC motors have the characteristics of wide application range, long service life, fast speed, low energy consumption, and easy maintenance. Therefore, brushless DC motors are the main development direction of motors in the future; among them , the control method of the brushless motor is the key to the performance of the brushless DC motor, but because in the prior art, the position sampling of the brushless DC motor is based on the Hall sensor, its cost is relatively high and the structure is relatively complicated, so in Some motor equipment, such as: brushed DC motors are still used on sewing machines; it greatly hinders the promotion and use of brushles...

Claims

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Application Information

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IPC IPC(8): H02P6/182
CPCH02P6/182
Inventor 吴正华宋力涛詹舵
Owner SHENZHEN GAOKERUN ELECTRONICS CO LTD
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