CN105553349A - Hall element position detection circuit for brushless motor driving circuit - Google Patents
Hall element position detection circuit for brushless motor driving circuit Download PDFInfo
- Publication number
- CN105553349A CN105553349A CN201511016257.7A CN201511016257A CN105553349A CN 105553349 A CN105553349 A CN 105553349A CN 201511016257 A CN201511016257 A CN 201511016257A CN 105553349 A CN105553349 A CN 105553349A
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- Prior art keywords
- hall element
- motor
- hall
- position detection
- resistance
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
- H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
- H02P6/182—Circuit arrangements for detecting position without separate position detecting elements using back-emf in windings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a Hall element position detection circuit for a brushless motor driving circuit. The Hall element position detection circuit comprises a main control chip, fitted Hall elements and other elements such as resistors and capacitors. According to the Hall element position detection circuit for the brushless motor driving circuit, back electromotive force is utilized to detect the motor position, and by compared with a Hall detection manner, the back electromotive force has the advantages that the motor position detection is more accurate, and the efficiency of a driving board can be achieved to the greatest extent; the motor position is detected in a manner of Hall detection before the motor starts, so that a motor starting process can ensure to be smooth without shaking and reversing, production and assembly are easy, requirements on assembly positions of the Hall elements are looser, and a problem of low working efficiency of the motor caused by position deviation of the Hall elements is avoided.
Description
technical field:
The present invention relates to electronic technology field, particularly relate to a kind of Hall element position testing circuit of driving circuit of brushless electric machine.
background technology:
Brushless motor structure is brushless gearless, it is desirable dynamic structure, there is the life-span long, the advantages such as low noise, but owing to adopting brushless structure, must be solved the hoop problem of electric current by an electronic controller, so controller more complicated, the reliability requirement of whole system is from the interior shifting of motor to controller.
Current driving circuit of brushless electric machine is divided into has transducer and without transducer two kinds.
There is Hall element driving circuit of brushless electric machine: by the position of Hall element detection rotor magnetic pole, determine the opportunity of current commutation, this kind of control circui algorithm is relatively simple, but it is higher to manufacturing technique requirent, if the installation site of Hall slightly deviation will affect the operating efficiency of whole motor, but be difficult to ensure installation site in reality all 100% accurately, so on the low side with Hall drive circuit phase specific efficiency.
Without Hall element driving circuit of brushless electric machine: be the position detecting rotor magnetic pole by flowing through the inverse electromotive force often organizing coil, inverse electromotive force can react rotor magnetic pole position really, control circuit is commutated on the opportunity of the best conducting, so, the operating efficiency ratio of this kind of circuit has Hall element drive circuit high, but in the products application of reality, also there is a problem, be exactly before electric motor starting, when motor remains static, reverse potential cannot be detected, first must turn an angle and just can detect by motor, so have the process of a reversion or shake when electric motor starting, therefore in practical application, certain restriction is had, such as be used in pedestal fan or ceiling fan is just not easy to allow people accept.
summary of the invention:
The object of the invention is, for the shortcoming existed in background technology and problem improvement and bring new ideas in addition, to provide a kind of Hall element position testing circuit of driving circuit of brushless electric machine.
The technical solution used in the present invention is:
A kind of Hall element position testing circuit of driving circuit of brushless electric machine, comprise main control chip U2, it is characterized in that: 9 pin of main control chip U2, 10 pin and 11 pin are respectively by resistance R15, resistance R16 is connected three Hall element H1 with resistance R17, H2, H3, Hall element H1, H2, H3 connect 15V power supply and after electric capacity CC19 ground connection, electric capacity CC20, ground connection after one end parallel connection of electric capacity CC21 and electric capacity CC22, the other end connects 11 pin of main control chip U2 respectively, 10 pin and 9 pin, resistance R14, 5V power supply is connect after one end parallel connection of resistance R13 and resistance R12, the other end meets Hall element H1 respectively, H2 and H3.
The model of described main control chip U2 is FCM8531.
Compared with prior art, beneficial effect of the present invention is:
Advantage of the present invention is: the global design of driving circuit of brushless electric machine detects motor position by inverse electromotive force, more accurate than Hall detection mode, the efficiency of the maximum performance drive plate of energy, motor position was detected by Hall before starting, therefore can accomplish that motor start-up procedure is level and smooth, not shake, nonreversible, easily produce and assembling, the rigging position of Hall element is required relatively looser, the low inferior problem of motor working efficiency can not be caused because of hall position deviation.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention.
embodiment:
Below in conjunction with accompanying drawing, by embodiment, the present invention is described in further detail:
A kind of Hall element position testing circuit of driving circuit of brushless electric machine, comprise main control chip U2, it is characterized in that: 9 pin of main control chip U2, 10 pin and 11 pin are respectively by resistance R15, resistance R16 is connected three Hall element H1 with resistance R17, H2, H3, Hall element H1, H2, H3 connect 15V power supply and after electric capacity CC19 ground connection, electric capacity CC20, ground connection after one end parallel connection of electric capacity CC21 and electric capacity CC22, the other end connects 11 pin of main control chip U2 respectively, 10 pin and 9 pin, resistance R14, 5V power supply is connect after one end parallel connection of resistance R13 and resistance R12, the other end meets Hall element H1 respectively, H2 and H3, the model of main control chip U2 is FCM8531.
Position detection part: have two kinds of position probing, one is Hall element, can detecting motor position in the static case, accurately controlling direction of motor rotation during for starting; Another kind is obtained by three sample resistances R18, R19, R20, when producing inverse electromotive force after electric machine rotation, can mistake sample resistance, and a sinusoidal wave feedback signal can be produced, judge motor position at that time by the waveform of three groups of feedback signals.
Embodiment of the present invention is only the description carried out the preferred embodiment of the present invention; not design of the present invention and scope are limited; under the prerequisite not departing from design philosophy of the present invention; the various modification that in this area, engineers and technicians make technical scheme of the present invention and improvement; protection scope of the present invention all should be fallen into; the technology contents of request protection of the present invention, all records in detail in the claims.
Claims (2)
1. the Hall element position testing circuit of a driving circuit of brushless electric machine, comprise main control chip U2, it is characterized in that: 9 pin of main control chip U2, 10 pin and 11 pin are respectively by resistance R15, resistance R16 is connected three Hall element H1 with resistance R17, H2, H3, Hall element H1, H2, H3 connect 15V power supply and after electric capacity CC19 ground connection, electric capacity CC20, ground connection after one end parallel connection of electric capacity CC21 and electric capacity CC22, the other end connects 11 pin of main control chip U2 respectively, 10 pin and 9 pin, resistance R14, 5V power supply is connect after one end parallel connection of resistance R13 and resistance R12, the other end meets Hall element H1 respectively, H2 and H3.
2. the Hall element position testing circuit of driving circuit of brushless electric machine according to claim 1, is characterized in that: the model of described main control chip U2 is FCM8531.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511016257.7A CN105553349A (en) | 2015-12-29 | 2015-12-29 | Hall element position detection circuit for brushless motor driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511016257.7A CN105553349A (en) | 2015-12-29 | 2015-12-29 | Hall element position detection circuit for brushless motor driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105553349A true CN105553349A (en) | 2016-05-04 |
Family
ID=55832331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511016257.7A Pending CN105553349A (en) | 2015-12-29 | 2015-12-29 | Hall element position detection circuit for brushless motor driving circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN105553349A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109150023A (en) * | 2018-09-19 | 2019-01-04 | 北京机械设备研究所 | A kind of permanent-magnet brushless DC electric machine commutation control circuit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203289377U (en) * | 2013-05-31 | 2013-11-13 | 合肥龙多电子科技有限公司 | Frequency-conversion driving board and control-board interface circuit |
| CN203504463U (en) * | 2013-06-24 | 2014-03-26 | 合肥龙多电子科技有限公司 | Brushless motor drive circuit |
-
2015
- 2015-12-29 CN CN201511016257.7A patent/CN105553349A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203289377U (en) * | 2013-05-31 | 2013-11-13 | 合肥龙多电子科技有限公司 | Frequency-conversion driving board and control-board interface circuit |
| CN203504463U (en) * | 2013-06-24 | 2014-03-26 | 合肥龙多电子科技有限公司 | Brushless motor drive circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109150023A (en) * | 2018-09-19 | 2019-01-04 | 北京机械设备研究所 | A kind of permanent-magnet brushless DC electric machine commutation control circuit |
| CN109150023B (en) * | 2018-09-19 | 2020-07-10 | 北京机械设备研究所 | Commutation control circuit of permanent magnet brushless direct current motor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160504 |
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| RJ01 | Rejection of invention patent application after publication |