CN204993133U - Brushless DC motor rotor -position detection circuitry - Google Patents
Brushless DC motor rotor -position detection circuitry Download PDFInfo
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- CN204993133U CN204993133U CN201520678040.1U CN201520678040U CN204993133U CN 204993133 U CN204993133 U CN 204993133U CN 201520678040 U CN201520678040 U CN 201520678040U CN 204993133 U CN204993133 U CN 204993133U
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Abstract
The utility model provides a brushless DC motor rotor -position detection circuitry, it is tens millivolts current potential signal to produce the electrical potential difference by the hall voltage generater, enlarge through difference amplifier, obtain the samely with former signal waveform, the signal of telecommunication that the amplitude is enlargied, carry out the plastic by schmidt trigger to the signal again, gained rectangle square wave lets in the open collector input, when the signal is the high level, the approximate 0V's of open -collector output end output low level, when the signal is the low level, open -collector output end output high level under the effect of pull -up resistance, isolate hall semiconductor current potential generater, position sensor has greatly been reduced to the motor size, the especially influence of motor air gap size, arrange chip and open collector in the motor outside, it is more convenient to maintain, the utility model discloses but the direct output can directly be supplied the brushless motor driver to receive and used by the data signal of six positions of triad code character one -tenth.
Description
Technical field
The utility model relates to a kind of position detecting circuit, is specifically related to a kind of brushless DC motor rotor position detection circuit.
Background technology
In recent years, along with the development of electronic technology, brushless DC motor relies on electronic technology and the New-type electric machine produced as a kind of, has become operation parts important in modern industrial equipment.Brushless motor relies on the alternate conduction of stator winding to produce the rotating magnetic field of jump, in its stator winding logical direct current make it have the characteristic of conventional DC motor, and owing to relying on power electronic device to carry out the conducting of cut-flower winding, so the brush eliminated again in DC motor and commutator, overcome the life-span that conventional DC motor causes due to wear of brush short, the shortcomings such as noise is large.But brushless DC motor wants to run, and must ensure that winding conducting is corresponding with rotor-position, therefore, be the most important thing that can motor normally run to the detection of the rotor-position of brushless DC motor.Due to the existence of Hall effect, Hall magnetosensitive position transducer comes the position of induction machine permanent magnet rotor through the change in the magnetic field of its Hall semiconductor by induction, and convert thereof into as the signal of telecommunication flows to brushless motor driver.Existing hall position sensor is all the integrator of single Hall element, be arranged in the confined space of motor internal, size and the manufacturing cost of motor can be increased, particularly can increase the size of air gap, and once come off, whole transducer all will be scrapped, and each maintenance all will open motor, extract rotor, extremely inconvenient.Meanwhile, for the three-phase six state operational mode that brushless DC motor is conventional, also do not have a special position sensor circuit to detect and export it to develop six position signallings represented by triad code needed for ripe integral control circuit.
Summary of the invention
In order to overcome the defect of prior art, the purpose of this utility model is to provide a kind of brushless DC motor rotor position detection circuit, and take motor internal space little, reliability is high, for ease of maintenaince.
For achieving the above object, the utility model provides following technical scheme:
A kind of brushless DC motor rotor position detection circuit, comprises Hall semiconductor electric potential generator H
1, Hall semiconductor electric potential generator H
2, Hall semiconductor electric potential generator H
3, resistance R
1, resistance R
2, resistance R
3one end connects Hall semiconductor electric potential generator H respectively
1, Hall semiconductor electric potential generator H
2, Hall semiconductor electric potential generator H
3one end, resistance R
1, resistance R
2, resistance R
3another termination GND, resistance R
4, resistance R
5, resistance R
6one end connect Hall semiconductor electric potential generator H respectively
1, Hall semiconductor electric potential generator H
2, Hall semiconductor electric potential generator H
3the other end, resistance R
4, resistance R
5, resistance R
6another termination VCC, resistance R
7two ends connect Hall semiconductor electric potential generator H respectively
1electromotive force output and chip U
12 ports, resistance R
8two ends connect Hall semiconductor electric potential generator H respectively
1electromotive force output and chip U
13 ports, resistance R
9two ends connect Hall semiconductor electric potential generator H respectively
2electromotive force output and chip U
15 ports, resistance R
10two ends connect Hall semiconductor electric potential generator H respectively
2electromotive force output and chip U
16 ports, resistance R
11two ends connect Hall semiconductor electric potential generator H respectively
3electromotive force output and chip U
113 ports, resistance R
12two ends connect Hall semiconductor electric potential generator H respectively
3electromotive force output and chip U
112 ports, resistance R
13connect chip U
11,2 ports, resistance R
14connect chip U
16,7 ports, resistance R
15connect chip U
113,14 ports, resistance R
16two ends connect chip U
13 ports and GND, resistance R
17two ends connect chip U
15 ports and GND, resistance R
18two ends connect chip U
112 ports and GND, resistance R
19two ends connect chip U
22 ports and triode V
1base stage, resistance R
20two ends connect chip U
24 ports and triode V
2base stage, resistance R
21two ends connect chip U
26 ports and triode V
3base stage, resistance R
22two ends connect VCC and triode V
1collector electrode, resistance R
23two ends connect VCC and triode V
2collector electrode, resistance R
24two ends connect VCC and triode V
3collector electrode, electric capacity C
1two ends connect Hall voltage maker H
1electromotive force export two ends, electric capacity C
2two ends connect Hall voltage maker H
2electromotive force export two ends, electric capacity C
3two ends connect Hall voltage maker H
3electromotive force export two ends, electric capacity C
4two ends connecting triode V
1collector electrode and GND, electric capacity C
5two ends connecting triode V
2collector electrode and GND, electric capacity C
6two ends connecting triode V
3collector electrode and GND, electric capacity C
7two ends connect VDD and GND, electric capacity C
8two ends connect VCC and GND, triode V
1, triode V
2, triode V
3emitter connects GND, chip U
14 ports meet VCC, chip U
111 ports meet VDD, chip U
21 port meet chip U
11 port, chip U
23 ports meet chip U
17 ports, chip U
25 ports meet chip U
114 ports, chip U
214 ports meet VCC, chip U
27 ports meet GND.
Three described Hall semiconductor electric potential generator are affixed on motor stator by 120 ° of some angles.
Described chip U
1, chip U
2and open collector is placed in outside motor.
Described chip U
1for differential amplifier integrated chip LM324.
Described chip U
2be six reverse Schmidt trigger integrated chip 74LS14.
Described power supply VCC voltage is+5V, and power vd D is-5V, GND is common.
Compared with prior art, the beneficial effects of the utility model are: separated by Hall semiconductor electric potential generator, greatly reduce position transducer to motor size, the particularly impact of motor gas-gap size, the differential amplifier that circuit is comprised, Schmidt trigger and open collector are placed in outside motor, safeguard more convenient, simultaneously, the utility model directly can export the digital signal of six positions be made up of triad code, can directly receive for brushless motor driver.
Accompanying drawing explanation
Accompanying drawing is circuit diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is clearly and completely described.
With reference to accompanying drawing, a kind of brushless DC motor rotor position detection circuit, comprises Hall semiconductor electric potential generator H
1, Hall semiconductor electric potential generator H
2, Hall semiconductor electric potential generator H
3, resistance R
1, resistance R
2, resistance R
3one end connects Hall semiconductor electric potential generator H respectively
1, Hall semiconductor electric potential generator H
2, Hall semiconductor electric potential generator H
3one end, resistance R
1, resistance R
2, resistance R
3another termination GND, resistance R
4, resistance R
5, resistance R
6one end connect Hall semiconductor electric potential generator H respectively
1, Hall semiconductor electric potential generator H
2, Hall semiconductor electric potential generator H
3the other end, resistance R
4, resistance R
5, resistance R
6another termination VCC, resistance R
7two ends connect Hall semiconductor electric potential generator H respectively
1electromotive force output and chip U
12 ports, resistance R
8two ends connect Hall semiconductor electric potential generator H respectively
1electromotive force output and chip U
13 ports, resistance R
9two ends connect Hall semiconductor electric potential generator H respectively
2electromotive force output and chip U
15 ports, resistance R
10two ends connect Hall semiconductor electric potential generator H respectively
2electromotive force output and chip U
16 ports, resistance R
11two ends connect Hall semiconductor electric potential generator H respectively
3electromotive force output and chip U
113 ports, resistance R
12two ends connect Hall semiconductor electric potential generator H respectively
3electromotive force output and chip U
112 ports, resistance R
13connect chip U
11,2 ports, resistance R
14connect chip U
16,7 ports, resistance R
15connect chip U
113,14 ports, resistance R
16two ends connect chip U
13 ports and GND, resistance R
17two ends connect chip U
15 ports and GND, resistance R
18two ends connect chip U
112 ports and GND, resistance R
19two ends connect chip U
22 ports and triode V
1base stage, resistance R
20two ends connect chip U
24 ports and triode V
2base stage, resistance R
21two ends connect chip U
26 ports and triode V
3base stage, resistance R
22two ends connect VCC and triode V
1collector electrode, resistance R
23two ends connect VCC and triode V
2collector electrode, resistance R
24two ends connect VCC and triode V
3collector electrode, electric capacity C
1two ends connect Hall voltage maker H
1electromotive force export two ends, electric capacity C
2two ends connect Hall voltage maker H
2electromotive force export two ends, electric capacity C
3two ends connect Hall voltage maker H
3electromotive force export two ends, electric capacity C
4two ends connecting triode V
1collector electrode and GND, electric capacity C
5two ends connecting triode V
2collector electrode and GND, electric capacity C
6two ends connecting triode V
3collector electrode and GND, electric capacity C
7two ends connect VDD and GND, electric capacity C
8two ends connect VCC and GND, triode V
1, triode V
2, triode V
3emitter connects GND, chip U
14 ports meet VCC, chip U
111 ports meet VDD, chip U
21 port meet chip U
11 port, chip U
23 ports meet chip U
17 ports, chip U
25 ports meet chip U
114 ports, chip U
214 ports meet VCC, chip U
27 ports meet GND, three described Hall semiconductor electric potential generator are affixed on motor stator by 120 ° of some angles.
Described chip U
1, chip U
2and open collector is placed in outside motor.
Described chip U
1for differential amplifier integrated chip LM324.
Described chip U
2be six reverse Schmidt trigger integrated chip 74LS14.
Described power supply VCC voltage is+5V, and power vd D is-5V, GND is common.
Operation principle of the present utility model is: three the Hall semiconductor electric potential generator connected by circuit are affixed on motor stator by 120 ° of some angles, switch on power, and gets final product digital signal corresponding to output rotor position when motor rotates.
Resistance R
1~ R
6for current-limiting resistance, prevent Hall voltage maker overcurrent damage, resistance R
7~ R
18forming three gains with chip LM324 is the differential amplifier of 40, resistance R
19~ R
21for current-limiting resistance, restriction flows into the electric current of transistor base, resistance R
22~ R
24for pull-up resistor, effect output current potential is pulled to 5V, C when the not conducting of transistor base input low level
1~ C
8for filtering capacitance of voltage regulation.
The electric potential signal that electrical potential difference is tens millivolts is produced by Hall voltage maker, amplify through differential amplifier, obtain identical with original signal waveform, amplitude amplifies the signal of telecommunication of about 40 times, then carries out shaping by Schmidt trigger to signal, and gained rectangle square wave passes into open collector input, when signal is high level, open-collector output exports the low level of approximate 0V, and when signal is low level, open-collector output exports+5V high level under the effect of pull-up resistor.
Claims (5)
1. a brushless DC motor rotor position detection circuit, comprises Hall semiconductor electric potential generator H
1, Hall semiconductor electric potential generator H
2, Hall semiconductor electric potential generator H
3, it is characterized in that: resistance R
1, resistance R
2, resistance R
3one end connects Hall semiconductor electric potential generator H respectively
1, Hall semiconductor electric potential generator H
2, Hall semiconductor electric potential generator H
3one end, resistance R
1, resistance R
2, resistance R
3another termination GND, resistance R
4, resistance R
5, resistance R
6one end connect Hall semiconductor electric potential generator H respectively
1, Hall semiconductor electric potential generator H
2, Hall semiconductor electric potential generator H
3the other end, resistance R
4, resistance R
5, resistance R
6another termination VCC, resistance R
7two ends connect Hall semiconductor electric potential generator H respectively
1electromotive force output and chip U
12 ports, resistance R
8two ends connect Hall semiconductor electric potential generator H respectively
1electromotive force output and chip U
13 ports, resistance R
9two ends connect Hall semiconductor electric potential generator H respectively
2electromotive force output and chip U
15 ports, resistance R
10two ends connect Hall semiconductor electric potential generator H respectively
2electromotive force output and chip U
16 ports, resistance R
11two ends connect Hall semiconductor electric potential generator H respectively
3electromotive force output and chip U
113 ports, resistance R
12two ends connect Hall semiconductor electric potential generator H respectively
3electromotive force output and chip U
112 ports, resistance R
13connect chip U
11,2 ports, resistance R
14connect chip U
16,7 ports, resistance R
15connect chip U
113,14 ports, resistance R
16two ends connect chip U
13 ports and GND, resistance R
17two ends connect chip U
15 ports and GND, resistance R
18two ends connect chip U
112 ports and GND, resistance R
19two ends connect chip U
22 ports and triode V
1base stage, resistance R
20two ends connect chip U
24 ports and triode V
2base stage, resistance R
21two ends connect chip U
26 ports and triode V
3base stage, resistance R
22two ends connect VCC and triode V
1collector electrode, resistance R
23two ends connect VCC and triode V
2collector electrode, resistance R
24two ends connect VCC and triode V
3collector electrode, electric capacity C
1two ends connect Hall voltage maker H
1electromotive force export two ends, electric capacity C
2two ends connect Hall voltage maker H
2electromotive force export two ends, electric capacity C
3two ends connect Hall voltage maker H
3electromotive force export two ends, electric capacity C
4two ends connecting triode V
1collector electrode and GND, electric capacity C
5two ends connecting triode V
2collector electrode and GND, electric capacity C
6two ends connecting triode V
3collector electrode and GND, electric capacity C
7two ends connect VDD and GND, electric capacity C
8two ends connect VCC and GND, triode V
1, triode V
2, triode V
3emitter connects GND, chip U
14 ports meet VCC, chip U
111 ports meet VDD, chip U
21 port meet chip U
11 port, chip U
23 ports meet chip U
17 ports, chip U
25 ports meet chip U
114 ports, chip U
214 ports meet VCC, chip U
27 ports meet GND,
Three described Hall semiconductor electric potential generator are affixed on motor stator by 120 ° of some angles.
2. a kind of brushless DC motor rotor position detection circuit according to claim 1, is characterized in that: described chip U
1, chip U
2and open collector is placed in outside motor.
3. a kind of brushless DC motor rotor position detection circuit according to claim 1, is characterized in that: described chip U
1for differential amplifier integrated chip LM324.
4. a kind of brushless DC motor rotor position detection circuit according to claim 1, is characterized in that: described chip U
2be six reverse Schmidt trigger integrated chip 74LS14.
5. a kind of brushless DC motor rotor position detection circuit according to claim 1, is characterized in that: described VCC voltage is+5V, VDD be-5V, GND is common.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520678040.1U CN204993133U (en) | 2015-09-02 | 2015-09-02 | Brushless DC motor rotor -position detection circuitry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520678040.1U CN204993133U (en) | 2015-09-02 | 2015-09-02 | Brushless DC motor rotor -position detection circuitry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204993133U true CN204993133U (en) | 2016-01-20 |
Family
ID=55127455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520678040.1U Expired - Fee Related CN204993133U (en) | 2015-09-02 | 2015-09-02 | Brushless DC motor rotor -position detection circuitry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204993133U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457830A (en) * | 2020-04-10 | 2020-07-28 | 北京航空航天大学宁波创新研究院 | Displacement detection circuit of magnetic suspension rotor system and displacement self-sensing system thereof |
-
2015
- 2015-09-02 CN CN201520678040.1U patent/CN204993133U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457830A (en) * | 2020-04-10 | 2020-07-28 | 北京航空航天大学宁波创新研究院 | Displacement detection circuit of magnetic suspension rotor system and displacement self-sensing system thereof |
| CN111457830B (en) * | 2020-04-10 | 2021-08-13 | 北京航空航天大学宁波创新研究院 | Displacement detection circuit of magnetic suspension rotor system and displacement self-sensing system thereof |
| US11863033B2 (en) | 2020-04-10 | 2024-01-02 | Ningbo Institute Of Technology, Beihang University | Displacement detection circuit of maglev rotor system and displacement self-sensing system thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20180902 |