CN204031021U - The nonpolarity control circuit of a kind of brshless DC motor voltage - Google Patents
The nonpolarity control circuit of a kind of brshless DC motor voltage Download PDFInfo
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- CN204031021U CN204031021U CN201420411873.7U CN201420411873U CN204031021U CN 204031021 U CN204031021 U CN 204031021U CN 201420411873 U CN201420411873 U CN 201420411873U CN 204031021 U CN204031021 U CN 204031021U
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- diode
- motor
- brshless
- triode
- circuit
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- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Control Of Direct Current Motors (AREA)
Abstract
The utility model provides the nonpolarity control circuit of a kind of brshless DC motor voltage, comprises diode D1 ~ D5, resistance R1, triode Q1, and described diode D1 ~ D4 forms bridge rectifier; A end, the c end of described bridge rectifier are connected with the both positive and negative polarity of power supply, b end is held with the VCC of circuit for controlling motor and is connected, d holds ground connection, the c end of described bridge rectifier is connected with the positive pole of diode D5, the negative pole of described diode D5 is connected with the base stage of triode Q1 through resistance R1, the grounded emitter of described triode Q1, collector electrode is held with the F/R of circuit for controlling motor and is connected.The utility model can realize the brshless DC motor generating positive and negative voltage period and all normally can work and achieve the requirement that the nonpolarity rotating of brshless DC motor voltage controls; This circuit structure is simple, reliability is high, long working life, efficiency are high and control performance good.
Description
Technical field
The utility model circuit relates to brshless DC motor control field, is the nonpolarity control circuit of a kind of brshless DC motor voltage.
Background technology
Brshless DC motor is a kind of Novel electromechanical integration motor of growing up rapidly along with high-frequency power electronic devices and PWM wave chopping technology, brshless DC motor replaces mechanical commutator with electronic commutator, have and have brushless motor and non-contact type alternating current machine advantage separately, in military-civil field fast electromechanical moving system (EMA), show vigorous vitality.According to brshless DC motor operation principle, motor can only be operated in the positive voltage period, needs to change overall power, provide motor positive and inverse control signal again to control motor positive and inverse simultaneously, circuit relative complex, and it is large to control difficulty, inconvenient operation.Existing brushless DC motor control system antijamming capability is good not, and operating efficiency is lower, and system suitability is poor.
Chinese patent ZL201210443478.2 discloses a kind of brushless DC motor control system, this control system is by controlling brshless DC motor to the electric current of controller, current detection circuit detect brshless DC motor starting, braking, overload or the electric current of stall Time Controller, in speed regulation process, when control system guarantee starting, braking, motor can obtain the maximum current allowed, be no more than again the electric current quota of components and parts, motor can only be operated in the positive voltage period, and control circuit is very complicated, control difficulty is large, inconvenient operation.
Utility model content
For solving the problems of the technologies described above, the utility model provides the nonpolarity control circuit of a kind of brshless DC motor voltage, and the nonpolarity control circuit of this brshless DC motor voltage solves by bridge rectifier the problem that motor can only be operated in the positive voltage period.
The utility model is achieved by the following technical programs.
The nonpolarity control circuit of a kind of brshless DC motor voltage that the utility model provides, comprises diode D1 ~ D5, resistance R1, triode Q1, and described diode D1 ~ D4 forms bridge rectifier; A end, the c end of described bridge rectifier are connected with the both positive and negative polarity of power supply respectively, b end is held with the VCC of circuit for controlling motor and is connected, d holds ground connection, the c end of described bridge rectifier is connected with the positive pole of diode D5, the negative pole of described diode D5 is connected with the base stage of triode Q1 through resistance R1, the grounded emitter of described triode Q1, collector electrode is held with the F/R of circuit for controlling motor and is connected.
Described diode D1 ~ D4 is RB551V-30 type switching diode.
Described Q1 is NPN type triode.
The beneficial effects of the utility model are: this circuit can realize the brshless DC motor generating positive and negative voltage period and all can normally work; Namely, when powering at 0 ~+10V voltage, while realizing motor rotation, providing motor by functional circuit and rotating forward high level signal; When powering at 0 ~-10V voltage, the negative voltage transition of being powered by motor controller by rectifier circuit becomes positive voltage to power, provide motor reversal low level signal by functional circuit simultaneously, thus achieve the requirement of the nonpolarity rotating control of brshless DC motor voltage; This circuit structure is simple, reliability is high, long working life, efficiency are high and control performance good.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Further describe the technical solution of the utility model below, but described in claimed scope is not limited to.
The nonpolarity control circuit of a kind of brshless DC motor voltage as shown in Figure 1, comprises diode D1 ~ D5, resistance R1, triode Q1, and described diode D1 ~ D4 forms bridge rectifier; A end, the c end of described bridge rectifier are connected with the both positive and negative polarity of power supply respectively, b end is held with the VCC of circuit for controlling motor and is connected, d holds ground connection, the c end of described bridge rectifier is connected with the positive pole of diode D5, the negative pole of described diode D5 is connected with the base stage of triode Q1 through resistance R1, the grounded emitter of described triode Q1, collector electrode is held with the F/R of circuit for controlling motor and is connected.
Described D1 ~ D4 is RB551V-30 type switching diode.RB551V-30 type low-voltage, low consumed switching diode, the tube voltage drop consumption of single diode is only 0.35V, and forward current can reach 1A, and voltage can reach 20V.
Described Q1 is NPN type triode.
In the utility model practical work process, when the voltage of J1 end be+10V, J2 end for GND time, voltage signal is flowed out by the D1 diode of bridge rectifier, flows back to through D4 diode, and meet system 0 and arrive 10V, electric current is less than the work requirements of 0.1A; When the voltage of J1 end is GND for holding for-10V, J2, voltage signal is flowed out by the D3 diode of bridge rectifier, flows back to through D2 diode; Reach and ensure that VCC end is always the demand of positive voltage with GND terminal voltage difference, transmit rotating control signal by the circuit of D5 diode, R1 resistance and Q1 switching tube composition to motor simultaneously, namely when the voltage of J1 end is+10V, the not conducting of D5 diode, the base stage of Q1 triode is not open-minded, and F/R end is high level relative to suspension; Otherwise when the voltage of J1 end is-10V, D5 diode current flow, the base stage of Q1 triode is open-minded, and F/R end exports as GND.
Claims (3)
1. the nonpolarity control circuit of brshless DC motor voltage, comprise diode D1 ~ D5, resistance R1, triode Q1, described diode D1 ~ D4 forms bridge rectifier, it is characterized in that: a end of described bridge rectifier, c end is connected with the both positive and negative polarity of power supply respectively, b end is held with the VCC of circuit for controlling motor and is connected, d holds ground connection, the c end of described bridge rectifier is connected with the positive pole of diode D5, the negative pole of described diode D5 is connected with the base stage of triode Q1 through resistance R1, the grounded emitter of described triode Q1, collector electrode is held with the F/R of circuit for controlling motor and is connected.
2. the nonpolarity control circuit of brshless DC motor voltage as claimed in claim 1, is characterized in that: described diode D1 ~ D4 is RB551V-30 type switching diode.
3. the nonpolarity control circuit of brshless DC motor voltage as claimed in claim 1, is characterized in that: described Q1 is NPN type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420411873.7U CN204031021U (en) | 2014-07-24 | 2014-07-24 | The nonpolarity control circuit of a kind of brshless DC motor voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420411873.7U CN204031021U (en) | 2014-07-24 | 2014-07-24 | The nonpolarity control circuit of a kind of brshless DC motor voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204031021U true CN204031021U (en) | 2014-12-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420411873.7U Expired - Fee Related CN204031021U (en) | 2014-07-24 | 2014-07-24 | The nonpolarity control circuit of a kind of brshless DC motor voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204031021U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109787518A (en) * | 2018-08-27 | 2019-05-21 | 豊豐精密有限公司 | A kind of DC brushless motor positive and negative rotation circuit |
-
2014
- 2014-07-24 CN CN201420411873.7U patent/CN204031021U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109787518A (en) * | 2018-08-27 | 2019-05-21 | 豊豐精密有限公司 | A kind of DC brushless motor positive and negative rotation circuit |
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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 |
Granted publication date: 20141217 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |