CN205232080U - Motor driving device - Google Patents
Motor driving device Download PDFInfo
- Publication number
- CN205232080U CN205232080U CN201521020358.7U CN201521020358U CN205232080U CN 205232080 U CN205232080 U CN 205232080U CN 201521020358 U CN201521020358 U CN 201521020358U CN 205232080 U CN205232080 U CN 205232080U
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- Prior art keywords
- motor
- circuit
- positional information
- brushless
- machine controlling
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Abstract
The utility model discloses a motor driving device is applied to DC Brushless motor, include: the mains operated circuit, send the interface circuit for single -chip control circuit with control command, confirm the positional information of DC Brushless motor rotor, drive circuit drives the single -chip control circuit that DC Brushless motor worked according to positional information control MOS pipe, when having the position sensor signal, acquire the positional information of the position sensor collection of DC Brushless motor rotor, send it to single -chip control circuit's position sensor testing circuit, when no position sensor signal, obtain the positional information of rotor according to DC Brushless motor looks line current, send it to single -chip control circuit's rotor -position detection circuitry, driving motor pivoted MOS manages drive circuit, and no matter whether the motor takes position sensor all can drive, when just taking position sensor's motor position sensor damage, still can work by driving motor, can drive DC Brushless motor work high -efficiently.
Description
Technical field
The utility model relates to motor driver field, particularly relates to a kind of motor driver.
Background technology
The characteristics such as efficiency is high because having for DC brushless motor, life-span length, low noise, high speed dynamic response, be widely used in the devices such as daily life tools, auto industry, aviation, consumer electronics, medical electronic, industrial automation, electronic commutator is directly used, so the driver design of motor has been given play to high-effect particularly important for motor because DC brushless motor does not use the commutating brush of mechanical structure.
Existing single driver for brushless DC motor the DC brushless motor of rotating band position transducer or driving can only not have the DC brushless motor of position transducer, and after the position transducer of the motor of band position sensor damages, cannot continue to drive, namely motor quits work, and drive efficiency is lower.
Utility model content
In view of this, main purpose of the present utility model is to provide a kind of motor driver, can drive DC brushless motor work efficiently.
For achieving the above object, the utility model provides a kind of motor driver, is applied to DC brushless motor, comprising:
For driver provides the power-supplying circuit of power supply;
The control command of host computer to driver is sent to the interface circuit of single chip machine controlling circuit;
Be connected with described interface circuit, receive the control command of host computer, determine the positional information of brushless DC motor, control according to described positional information the single chip machine controlling circuit that metal-oxide-semiconductor drive circuit drives DC brushless motor work;
Be connected with described single chip machine controlling circuit, when position sensor signal condition, the positional information that the position transducer obtaining brushless DC motor gathers, is sent to the position transducer testing circuit of described single chip machine controlling circuit by described positional information;
Be connected with described single chip machine controlling circuit, when position-sensor-free signal condition, obtain the positional information of brushless DC motor according to DC brushless motor phase line current, described positional information is sent to the rotor position detection circuit of described single chip machine controlling circuit;
Be connected with described single chip machine controlling circuit, drive DC brushless motor to continue the metal-oxide-semiconductor drive circuit rotated.
Preferably, described motor driver also comprises: be connected with described single chip machine controlling circuit, detects the operating current of DC brushless motor, carries out the motor working current testing circuit of overcurrent protection.
Preferably, described interface circuit comprises RS485 chip.
Preferably, described power-supplying circuit comprises:
Externally fed voltage dropped to the LM2576 chip of the first preset voltage value and described first preset voltage value dropped to the L7805CV chip of the second preset voltage value.
Preferably, described single chip machine controlling circuit comprises STM32 single-chip microcomputer.
Preferably, the position transducer of described DC brushless motor is Hall element.
Preferably, described position transducer testing circuit comprises 3 LM393 twin voltage comparators, is all connected with described Hall element.
Preferably, described rotor position detection circuit comprises 3 sampling resistors be connected respectively with DC brushless motor 3 phase line.
Preferably, described metal-oxide-semiconductor drive circuit comprises IR2136 chip.
A kind of motor driver that application the utility model provides, is applied to DC brushless motor, comprises: power-supplying circuit; Control command is sent to the interface circuit of single chip machine controlling circuit; Determine the positional information of brushless DC motor, control according to positional information the single chip machine controlling circuit that metal-oxide-semiconductor drive circuit drives DC brushless motor work; When position sensor signal, the positional information that the position transducer obtaining brushless DC motor gathers, sends it to the position transducer testing circuit of single chip machine controlling circuit; When position-sensor-free signal, obtain the positional information of brushless DC motor according to DC brushless motor phase line current, send it to the rotor position detection circuit of single chip machine controlling circuit; The metal-oxide-semiconductor drive circuit that drive motors rotates, no matter whether motor is with position transducer all can drive, and when the position transducer of the motor of band position transducer damages, still can drive motors work, DC brushless motor work can be driven efficiently.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the structural representation of a kind of motor driver embodiment of the utility model;
Fig. 2 is a detailed construction schematic diagram of a kind of motor driver embodiment of the utility model;
Fig. 3 is the another detailed construction schematic diagram of a kind of motor driver of the utility model embodiment;
Fig. 4 is the another detailed construction schematic diagram of a kind of motor driver of the utility model embodiment;
Fig. 5 is the another detailed construction schematic diagram of a kind of motor driver of the utility model embodiment;
Fig. 6 is the another detailed construction schematic diagram of a kind of motor driver of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model provides a kind of motor driver, is applied to DC brushless motor, and Fig. 1 shows the structural representation of the utility model motor driver embodiment, comprising:
For driver provides the power-supplying circuit 101 of power supply;
As shown in Figure 2, power-supplying circuit comprises LM2576 chip and L7805CV chip, and externally fed voltage can be down to the first preset voltage value, as 12V by LM2576 chip, by L7805CV, the first preset voltage value is down to the second preset voltage value again, as 12V is down to 5V.
The control command of host computer to driver is sent to the interface circuit 102 of single chip machine controlling circuit;
As shown in Figure 3, interface circuit comprises RS485 chip, be connected with RS485 bus by the serial ports of single-chip microcomputer, host computer can by RS485 bus to driver sending controling instruction, and control command comprises the start and stop of motor, turn to, rotational speed regulation etc., host computer also receives the feedback of driver by RS485 bus, by the communication of bus, can control and drive system quickly and easily, thus reach the object precisely controlling DC brushless motor.
Be connected with described interface circuit 102, receive the control command of host computer, determine the positional information of brushless DC motor, control according to described positional information the single chip machine controlling circuit 103 that metal-oxide-semiconductor drive circuit drives DC brushless motor work;
As shown in Figure 4, single chip machine controlling circuit comprises STM32 single-chip microcomputer, and this singlechip chip integrated level is high, fast operation, and peripheral hardware enriches, with the interface such as AD conversion, communication.
Be connected with described single chip machine controlling circuit 103, when position sensor signal condition, the positional information that the position transducer obtaining brushless DC motor gathers, is sent to the position transducer testing circuit 104 of described single chip machine controlling circuit by described positional information;
The position transducer of DC brushless motor configuration is generally Hall element, as shown in Figure 5, position transducer testing circuit comprises 3 LM393 twin voltage comparators, all be connected with described Hall element, be used to refer to the position residing for rotor, by this circuit, can precise acquisition to the position of rotor, after single-chip microcomputer receives the positional information of rotor, namely by driving different metal-oxide-semiconductors, reach the object making motor rotation.The presence or absence of this circuit also detection position signal in addition, after can't accept some or several positional information within the regular hour, namely single-chip microcomputer judges that the position transducer of this motor damages, single-chip microcomputer will abandon the rotor-position being judged motor by position transducer, and judge rotor-position by additive method, thus continue to make motor rotation.
Be connected with described single chip machine controlling circuit 103, when position-sensor-free signal condition, obtain the positional information of brushless DC motor according to DC brushless motor phase line current, described positional information is sent to the rotor position detection circuit 105 of described single chip machine controlling circuit;
Be connected with described single chip machine controlling circuit 103, drive DC brushless motor to continue the metal-oxide-semiconductor drive circuit 106 rotated.
As shown in Figure 6, be metal-oxide-semiconductor drive circuit and rotor position detection circuit, that metal-oxide-semiconductor driving chip adopts is IR2136.IR2136 is the special grid integrated drive electronics of power MOSFET and IGBT, it can drive and be operated in the device for power switching of busbar voltage up to 600V, with 3 independently high-pressure side and low-pressure side output channels, inner employing bootstrap technique, only need a DC power supply, just the driving pulse of exportable 6 road device for power switching, only needs a DC power supply, achieve and the optimum of power MOSFET and IGBT has been driven, simplified the design of whole drive circuit.And the built-in dead-zone circuit of IR2136 driving chip, and the function such as overcurrent protection and under-voltage protection.The control logic input of IR2136 and CMOS, LSTTL level compatibility, input with noise filter simultaneously, made it good noise inhibiting ability.The signal that single-chip microcomputer inputs according to position transducer, the metal-oxide-semiconductor that control IR2136 switch is different, makes being loaded in the phase line of motor of voltage reasonable, thus makes the rotation that motor continues.
R1 in circuit, R2, R3 are the sampling resistor of each phase line of motor, and by these three resistance, single-chip microcomputer can sample the voltage at resistance two ends, thus calculates the electric current flowing through motor phase line.The corresponding relation of current value and motor rotor position can being drawn by algorithm, making driver when there is no position sensor signal, also can accurately judge motor rotor position, thus drive motors running.
In addition; driver also comprises motor working current testing circuit; for detecting the operating current of DC brushless motor; in Fig. 6, three sampling resistors are also as the overcurrent protection of motor; when electric current exceedes a certain threshold value, represent excessive by the electric current of motor, now; single-chip microcomputer escapes injury to protect motor, can make motor stalling at once.
A kind of motor driver that application the present embodiment provides, is applied to DC brushless motor, comprises: power-supplying circuit; Control command is sent to the interface circuit of single chip machine controlling circuit; Determine the positional information of brushless DC motor, control according to positional information the single chip machine controlling circuit that metal-oxide-semiconductor drive circuit drives DC brushless motor work; When position sensor signal, the positional information that the position transducer obtaining brushless DC motor gathers, sends it to the position transducer testing circuit of single chip machine controlling circuit; When position-sensor-free signal, obtain the positional information of brushless DC motor according to DC brushless motor phase line current, send it to the rotor position detection circuit of single chip machine controlling circuit; The metal-oxide-semiconductor drive circuit that drive motors rotates, no matter whether motor is with position transducer all can drive, and when the position transducer of the motor of band position transducer damages, still can drive motors work, DC brushless motor work can be driven efficiently.
It should be noted that, each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.For system class embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Finally, also it should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Above motor driver provided by the utility model is described in detail, apply specific case herein to set forth principle of the present utility model and execution mode, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (9)
1. a motor driver, is applied to DC brushless motor, it is characterized in that, comprising:
For driver provides the power-supplying circuit of power supply;
The control command of host computer to driver is sent to the interface circuit of single chip machine controlling circuit;
Be connected with described interface circuit, receive the control command of host computer, determine the positional information of brushless DC motor, control according to described positional information the single chip machine controlling circuit that metal-oxide-semiconductor drive circuit drives DC brushless motor work;
Be connected with described single chip machine controlling circuit, when position sensor signal condition, the positional information that the position transducer obtaining brushless DC motor gathers, is sent to the position transducer testing circuit of described single chip machine controlling circuit by described positional information;
Be connected with described single chip machine controlling circuit, when position-sensor-free signal condition, obtain the positional information of brushless DC motor according to DC brushless motor phase line current, described positional information is sent to the rotor position detection circuit of described single chip machine controlling circuit;
Be connected with described single chip machine controlling circuit, drive DC brushless motor to continue the metal-oxide-semiconductor drive circuit rotated.
2. motor driver according to claim 1, is characterized in that, also comprises: be connected with described single chip machine controlling circuit, detects the operating current of DC brushless motor, carries out the motor working current testing circuit of overcurrent protection.
3. motor driver according to claim 1, is characterized in that, described interface circuit comprises RS485 chip.
4. motor driver according to claim 1, is characterized in that, described power-supplying circuit comprises:
Externally fed voltage dropped to the LM2576 chip of the first preset voltage value and described first preset voltage value dropped to the L7805CV chip of the second preset voltage value.
5. motor driver according to claim 1, is characterized in that, described single chip machine controlling circuit comprises STM32 single-chip microcomputer.
6. motor driver according to claim 1, is characterized in that, the position transducer of described DC brushless motor is Hall element.
7. motor driver according to claim 6, is characterized in that, described position transducer testing circuit comprises 3 LM393 twin voltage comparators, is all connected with described Hall element.
8. motor driver according to claim 1, is characterized in that, described rotor position detection circuit comprises 3 sampling resistors be connected respectively with DC brushless motor 3 phase line.
9. motor driver according to claim 1, is characterized in that, described metal-oxide-semiconductor drive circuit comprises IR2136 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521020358.7U CN205232080U (en) | 2015-12-08 | 2015-12-08 | Motor driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521020358.7U CN205232080U (en) | 2015-12-08 | 2015-12-08 | Motor driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205232080U true CN205232080U (en) | 2016-05-11 |
Family
ID=55907122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521020358.7U Expired - Fee Related CN205232080U (en) | 2015-12-08 | 2015-12-08 | Motor driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205232080U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106856387A (en) * | 2015-12-08 | 2017-06-16 | 重庆森坦科技有限公司 | A kind of driver for brushless DC motor |
| CN109347373A (en) * | 2018-12-12 | 2019-02-15 | 常州机电职业技术学院 | Brushless motor control system |
| CN109425827A (en) * | 2017-08-23 | 2019-03-05 | 南京感控通化工产品经营部 | A kind of motor hot-line self-checking up method |
| CN112737427A (en) * | 2021-01-15 | 2021-04-30 | 北京绿能芯创电子科技有限公司 | High-speed DC brushless motor driver |
-
2015
- 2015-12-08 CN CN201521020358.7U patent/CN205232080U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106856387A (en) * | 2015-12-08 | 2017-06-16 | 重庆森坦科技有限公司 | A kind of driver for brushless DC motor |
| CN109425827A (en) * | 2017-08-23 | 2019-03-05 | 南京感控通化工产品经营部 | A kind of motor hot-line self-checking up method |
| CN109347373A (en) * | 2018-12-12 | 2019-02-15 | 常州机电职业技术学院 | Brushless motor control system |
| CN112737427A (en) * | 2021-01-15 | 2021-04-30 | 北京绿能芯创电子科技有限公司 | High-speed DC brushless motor driver |
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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: 20160511 Termination date: 20161208 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |