Method for identifying Hall phase sequence of DC brushless motor

A brushless DC motor and identification method technology, which is applied in the control of generators, motor generator control, electronic commutation motor control, etc., can solve problems such as inconvenience, and achieve the effect of wide applicability

Active Publication Date: 2019-10-08
GUANGZHOU SIZHI TECH CO LTD
View PDF8 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are 6 combinations of three-phase Hall element output, so it is necessary for the debugger to judge the correct Hall combination according to the running state of the motor. The more intuitive way is to use an oscilloscope to observe the current waveform to judge, but if the oscilloscope cannot be obtained In some occasions, manual debugging is required. During manual debugging, the debugger needs to have certain professional knowledge to debug smoothly, which is very inconvenient. Therefore, the technical problem to be solved by the present invention is how to provide a method that can accurately identify the brushless The Method of Hall Phase Sequence of DC Motor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for identifying Hall phase sequence of DC brushless motor
  • Method for identifying Hall phase sequence of DC brushless motor
  • Method for identifying Hall phase sequence of DC brushless motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0059] The purpose of the present invention is to provide a method for identifying the Hall phase sequence of a DC brushless motor, so as to realize automatic identification of the Hall phase sequence of the DC brushless motor.

[0060] In order to make the above objects, features and advantages of the present invention more comprehensible, the invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0061] Such as figure 1 As shown, the present invention provides a Hall phase sequence identification method for a brushless DC motor, and the identification method includes the following steps:

[0062] Step 101, using the method of current closed-loop control, sequentially supplying the first pre-positioning voltage vector and the second pre-positioning voltage vector with a phase difference of 60° to the brushless DC motor, and presetting the rotor of the brushless DC motor. After the DC brushless motor is st...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method for identifying the Hall phase sequence of a DC brushless motor. The identification method comprises the steps of firstly, carrying out pre-positioning on a rotor of the DC brushless motor by the means of sequentially introducing a first pre-positioning voltage vector and a second pre-positioning voltage vector, collecting Hall state signals of three Hall sensors after the pre-positioning, then determining a correct Hall combination mode according to a Hall state combination target value corresponding to the second pre-positioning voltage vector and the Hall state signals of the three Hall sensors to obtain a candidate set, then introducing a third pre-positioning voltage vector into the DC brushless motor, collecting Hall state signals of the three Hall sensors after introducing the third pre-positioning voltage vector, and further selecting a correct Hall combination mode from the candidate set to serve as an identification result according to a Hall state combination target value corresponding to the third pre-positioning voltage vector and the Hall state signals. The automatic identification of the Hall phase sequence of the DC brushless motor isrealized without manual debugging.

Description

technical field [0001] The invention relates to the field of motor control, in particular to a Hall phase sequence identification method for a DC brushless motor. Background technique [0002] When the flow brushless motor is running normally, the rotor position must be known, that is, the power-on sequence of the motor is controlled according to the output state of the Hall element. There are 6 combinations of three-phase Hall element output, so it is necessary for the debugger to judge the correct Hall combination according to the running state of the motor. The more intuitive way is to use an oscilloscope to observe the current waveform to judge, but if the oscilloscope cannot be obtained In some occasions, manual debugging is required. During manual debugging, the debugger needs to have certain professional knowledge to debug smoothly, which is very inconvenient. Therefore, the technical problem to be solved by the present invention is how to provide a method that can ac...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/18
CPCH02P21/18
Inventor 黄康军党彦波周光远周玉梅
Owner GUANGZHOU SIZHI TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products