CN105515469A - Brushless DC motor, control method and control device thereof - Google Patents
Brushless DC motor, control method and control device thereof Download PDFInfo
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- CN105515469A CN105515469A CN201511009924.9A CN201511009924A CN105515469A CN 105515469 A CN105515469 A CN 105515469A CN 201511009924 A CN201511009924 A CN 201511009924A CN 105515469 A CN105515469 A CN 105515469A
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- motor
- control
- brshless
- fixed position
- rotor fixed
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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
Abstract
The invention discloses a brushless DC motor, a control method and a control device thereof, wherein the control method comprises the following steps of receiving a motor shutdown signal; controlling the motor for realizing shutdown, and positioning a rotor after the motor is shutdown; receiving a starting signal of the motor; accelerating the motor and performing mode switching according to the starting signal. According to the control method, through positioning the rotor after the motor is shutdown and directly making the motor perform acceleration and mode switching in restarting of the motor, a problem of reverse rotation in motor starting is effectively settled.
Description
Technical field
The present invention relates to motor control technology field, particularly a kind of brshless DC motor and control method thereof and device.
Background technology
Usually, the brshless DC motor of position-sensor-free starts control mode two kinds, and one is high-frequency signal input method, and the method easily produces torque pulsation; Another kind is syllogic starting method, comprises rotor fixed position, acceleration and running status and switches three phases.
In syllogic starting method, rotor fixed position is conducted by any two of control inverter, so that rotor is pulled to precalculated position, thus completes the location of rotor, but this locate mode can cause the probability generation reversal development having 50% during electric motor starting.Such as, first may reverse when fan starting up and rotate forward again, affect Consumer's Experience.Therefore, need to control to improve to the startup of motor.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is the control method proposing a kind of brshless DC motor, by controlling rotor fixed position after motor shutdown, and directly control motor when motor starts again and carry out accelerations and pattern and switch, thus effectively solution electric motor starting time generation reversal development.
Another object of the present invention is the control device proposing a kind of brshless DC motor.Another object of the present invention is to propose a kind of brshless DC motor.
For achieving the above object, one aspect of the present invention embodiment proposes a kind of control method of brshless DC motor, comprises the following steps: receive motor off signal; Control described motor to shut down, and control described rotor fixed position after described motor shutdown; Receive the starting-up signal of described motor; And according to described starting-up signal control described motor carry out acceleration go forward side by side row mode switch.
The control method of the brshless DC motor of the embodiment of the present invention, by controlling rotor fixed position after motor shutdown, and directly control motor when motor starts again and carry out accelerations and pattern and switch, thus effectively solution electric motor starting time generation reversal development, and simple, reliability is high.
According to one embodiment of present invention, after the starting-up signal of the described motor of described reception, also comprise: determine whether initiating switchup; If be judged as initiating switchup, then control described rotor fixed position, and control after described rotor fixed position described motor carry out acceleration go forward side by side row mode switch.
According to one embodiment of present invention, the control method of above-mentioned brshless DC motor, also comprises: carry out initialization to described motor.
According to one embodiment of present invention, described after the shutdown of described motor, control described rotor fixed position after, also comprise: judge whether described rotor-position changes; If described rotor-position changes, then after receiving described starting-up signal, control described rotor fixed position, and control after described rotor fixed position described motor carry out acceleration go forward side by side row mode switch.
For achieving the above object, the present invention on the other hand embodiment proposes a kind of control device of brshless DC motor, comprising: off signal receiver module, for receiving motor off signal; Shutdown control module, shuts down for controlling described motor; Locating module, for controlling described rotor fixed position after described motor shutdown; Starting-up signal receiver module, for receiving the starting-up signal of described motor; And start control module, for control according to described starting-up signal described motor carry out acceleration go forward side by side row mode switch.
The control device of the brshless DC motor of the embodiment of the present invention, by controlling rotor fixed position after motor shutdown, and directly control motor when motor starts again and carry out acceleration and pattern and switch, thus there is reversal development when effectively solving electric motor starting, and reliability is high.
According to one embodiment of present invention, described start control module, also for when being judged as initiating switchup, controls described rotor fixed position, and control after described rotor fixed position described motor carry out acceleration go forward side by side row mode switch.
According to one embodiment of present invention, the control device of above-mentioned brshless DC motor, also comprises: initialization module, for carrying out initialization to described motor.
According to one embodiment of present invention, the control device of above-mentioned brshless DC motor, also comprise: judge module, for judging whether described rotor-position changes, wherein, described start control module, when judging that described rotor-position changes, controls described rotor fixed position, and control after described rotor fixed position described motor carry out acceleration go forward side by side row mode switch.
In addition, embodiments of the invention also proposed a kind of brshless DC motor, and it comprises the control device of above-mentioned brshless DC motor.
The brshless DC motor of the embodiment of the present invention, by the control device of above-mentioned brshless DC motor, rotor fixed position can be controlled after motor shutdown, and directly control motor when motor starts again and carry out accelerations and pattern and switch, thus effectively solution electric motor starting time generation reversal development.
According to one embodiment of present invention, described brshless DC motor is not provided with position transducer.
Accompanying drawing explanation
Fig. 1 is the flow chart of the control method of brshless DC motor according to an embodiment of the invention.
Fig. 2 is the flow chart of the control method of brshless DC motor according to the present invention's specific embodiment.
Fig. 3 is the block diagram of the control device of brshless DC motor according to an embodiment of the invention.
Fig. 4 is the block diagram of the control device of brshless DC motor according to the present invention's specific embodiment.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
The brshless DC motor and control method thereof and device that propose according to the embodiment of the present invention are described with reference to the accompanying drawings.
Fig. 1 is the flow chart of the control method of brshless DC motor according to an embodiment of the invention.As shown in Figure 1, the control method of this brshless DC motor comprises the following steps:
S1, receives motor off signal.
S2, controls motor and shuts down, and controls rotor fixed position after motor shutdown.
Particularly, after receiving motor off signal, control motor and shut down, when motor is about to shut down, controls motor and carry out rotor fixed position to make rotor fixed position to precalculated position.In one embodiment of the invention, after rotor fixed position success, motor enters holding state to carry out initialization to motor.
S3, receives the starting-up signal of motor.
S4, according to starting-up signal control motor carry out acceleration go forward side by side row mode switch.
Particularly, when motor starts again, because the rotor of the rear motor of motor shutdown navigates to precalculated position, therefore can directly control motor according to forward direction carry out acceleration go forward side by side row mode switch, thus when effectively avoiding electric motor starting occur reversal development.Wherein, when controlling motor Accelerating running, subregion can be determined by a given default magnitude of angular velocity, switching tube is obtained as IGBT (InsulatedGateBipolarTransistor after subregion has been determined, insulated gate bipolar transistor) switching sequence, certain rotating magnetic field is produced by control IGBT turn-on and turn-off, start to rotate at the effect lower rotor part of rotating magnetic field, and then dragging motor runs, when motor runs to certain rotating speed, switch to closed-loop control by opened loop control, motor enters normal operating condition.
In one embodiment of the invention, after the starting-up signal receiving motor, also comprise: determine whether initiating switchup; If be judged as initiating switchup, then control rotor fixed position, and control after rotor fixed position motor carry out acceleration go forward side by side row mode switch.
Be understandable that, when motor initiating switchup, owing to not positioning rotor before this, therefore need first to control rotor fixed position, and rotor fixed position success after control motor accelerate go forward side by side row mode switch.That is, when motor initiating switchup, can position according to the rotor fixed position method in correlation technique, and after locating successfully, control motor carry out acceleration and pattern and switch, namely say, electric motor starting can be controlled according to the syllogic starting method of brshless DC motor in correlation technique and run.
In one embodiment of the invention, after control rotor fixed position after motor shutdown, also comprise: judge whether rotor-position changes; If rotor-position changes, then after receiving starting-up signal, control rotor fixed position, and control after rotor fixed position motor carry out acceleration go forward side by side row mode switch.
That is, when being in holding state after rotor fixed position success, if artificial or external factor makes the position of rotor change, then when motor starts again, need to judge whether rotor-position changes, and when rotor-position changes control rotor fixed position, when rotor fixed position is to precalculated position, control motor carry out acceleration go forward side by side row mode switching.
According to a specific embodiment of the present invention, as shown in Figure 2, the control method of brshless DC motor can comprise the following steps:
S101, motor is in holding state, initialization motor operating parameter.
S102, judges whether motor is initiating switchup.If so, step S103 is performed; If not, step S104 is performed.
S103, controls rotor fixed position.
S104, judges that whether rotor-position is correct.If so, step S105 is performed; If not, step S103 is returned.
S105, motor is in open loop situations, namely controls motor and accelerates.
S106, when the current operating conditions of motor meets mode changeover condition, controls motor and enters closed loop states.
S107, judges whether motor shuts down.If so, step S108 is performed; If not, step S106 is returned.
S108, controls rotor fixed position, and returns step S101 after rotor fixed position success.
In sum, the control method of the brshless DC motor of the embodiment of the present invention, by controlling rotor fixed position after motor shutdown, and directly control motor when motor starts again and carry out acceleration and pattern and switch, thus there is reversal development when effectively solving electric motor starting, and simple, reliability is high, and then improve the performance of Related product, improve Consumer's Experience.
Fig. 3 is the block diagram of the control device 100 of brshless DC motor according to an embodiment of the invention.As shown in Figure 3, the control device 100 of this brshless DC motor comprises off signal receiver module 10, shutdown control module 20, locating module 30, starting-up signal receiver module 40 and start control module 50.
Wherein, off signal receiver module 10 is for receiving motor off signal, and shutdown control module 20 is shut down for controlling motor.Locating module 30 for controlling rotor fixed position after motor shutdown.Starting-up signal receiver module 40 for receiving the starting-up signal of motor, start control module 50 for according to starting-up signal control motor carry out acceleration go forward side by side row mode switch.
Particularly, after off signal receiver module 10 receives motor off signal, shutdown control module 20 controls motor and shuts down, and when motor is about to shut down, locating module 30 controls motor and carries out rotor fixed position to make rotor fixed position to precalculated position.In one embodiment of the invention, after rotor fixed position success, also by initialization module (not specifically illustrating in figure), initialization is carried out to motor.When motor starts again, namely when starting-up signal receiver module 40 receives the starting-up signal of motor, because the rotor of the rear motor of motor shutdown navigates to precalculated position, therefore, start control module 50 can directly control motor according to forward direction carry out acceleration go forward side by side row mode switch, thus when effectively avoiding electric motor starting occur reversal development.Wherein, when control module 50 of starting shooting controls motor Accelerating running, subregion can be determined by a given default magnitude of angular velocity, switching tube is obtained as IGBT (InsulatedGateBipolarTransistor after subregion has been determined, insulated gate bipolar transistor) switching sequence, certain rotating magnetic field is produced by control IGBT turn-on and turn-off, start to rotate at the effect lower rotor part of rotating magnetic field, and then dragging motor runs, when motor runs to certain rotating speed, closed-loop control is switched to by opened loop control, motor enters normal operating condition.
In one embodiment of the invention, start control module 50 also for when being judged as initiating switchup, control rotor fixed position, and control after rotor fixed position motor carry out acceleration go forward side by side row mode switch.
Be understandable that, when motor initiating switchup, owing to not positioning rotor before this, therefore need start control module 50 first control rotor fixed position, and rotor fixed position success after control motor accelerate go forward side by side row mode switch.That is, when motor initiating switchup, can position according to the rotor fixed position method in correlation technique, and after locating successfully, control motor carry out acceleration and pattern and switch, namely say, electric motor starting can be controlled according to the syllogic starting method of brshless DC motor in correlation technique and run.
In one embodiment of the invention, as shown in Figure 4, the control device 100 of above-mentioned brshless DC motor also comprises: judge module 60.Judge module 60 for judging whether rotor-position changes, wherein, start control module 50 when judging that rotor-position changes, control rotor fixed position, and control after rotor fixed position motor carry out acceleration go forward side by side row mode switching.
That is, when being in holding state after rotor fixed position success, if artificial or external factor makes the position of rotor change, then when motor starts again, whether rotor-position changes to need judge module 60 to judge, and control rotor fixed position when rotor-position changes by control module 50 of starting shooting, when rotor fixed position is to precalculated position, control motor carry out acceleration go forward side by side row mode switch.
The control device of the brshless DC motor of the embodiment of the present invention, by controlling rotor fixed position after motor shutdown, and directly control motor when motor starts again and carry out acceleration and pattern and switch, thus there is reversal development when effectively solving electric motor starting, and reliability is high, and then improve the performance of Related product, improve Consumer's Experience.
In addition, embodiments of the invention also proposed a kind of brshless DC motor, and it comprises the control device of above-mentioned brshless DC motor.This brshless DC motor is not provided with position transducer, and wherein, position transducer refers to Hall element or other possible transducer.
The brshless DC motor of the embodiment of the present invention, by the control device of above-mentioned brshless DC motor, rotor fixed position can be controlled after motor shutdown, and directly control motor when motor starts again and carry out accelerations and pattern and switch, thus effectively solution electric motor starting time generation reversal development.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. a control method for brshless DC motor, is characterized in that, comprises the following steps:
Receive motor off signal;
Control described motor to shut down, and control described rotor fixed position after described motor shutdown;
Receive the starting-up signal of described motor; And
According to described starting-up signal control described motor carry out acceleration go forward side by side row mode switch.
2. the control method of brshless DC motor as claimed in claim 1, is characterized in that, after the starting-up signal of the described motor of described reception, also comprise:
Determine whether initiating switchup;
If be judged as initiating switchup, then control described rotor fixed position, and control after described rotor fixed position described motor carry out acceleration go forward side by side row mode switch.
3. the control method of brshless DC motor as claimed in claim 1, is characterized in that, also comprise:
Initialization is carried out to described motor.
4. the control method of brshless DC motor as claimed in claim 1, is characterized in that, described after described motor shuts down, control described rotor fixed position after, also comprise:
Judge whether described rotor-position changes;
If described rotor-position changes, then after receiving described starting-up signal, control described rotor fixed position, and control after described rotor fixed position described motor carry out acceleration go forward side by side row mode switch.
5. a control device for brshless DC motor, is characterized in that, comprising:
Off signal receiver module, for receiving motor off signal;
Shutdown control module, shuts down for controlling described motor;
Locating module, for controlling described rotor fixed position after described motor shutdown;
Starting-up signal receiver module, for receiving the starting-up signal of described motor; And
Start control module, for control according to described starting-up signal described motor carry out acceleration go forward side by side row mode switch.
6. the control device of brshless DC motor as claimed in claim 5, it is characterized in that, described start control module, also for when being judged as initiating switchup, control described rotor fixed position, and control after described rotor fixed position described motor carry out acceleration go forward side by side row mode switch.
7. the control device of brshless DC motor as claimed in claim 5, is characterized in that, also comprise:
Initialization module, for carrying out initialization to described motor.
8. the control device of brshless DC motor as claimed in claim 5, is characterized in that, also comprise:
Judge module, for judging whether described rotor-position changes, wherein, described start control module is when judging that described rotor-position changes, control described rotor fixed position, and control after described rotor fixed position described motor carry out acceleration go forward side by side row mode switch.
9. a brshless DC motor, is characterized in that, comprises the control device of the brshless DC motor as described in any one of claim 5-8.
10. brshless DC motor as claimed in claim 9, it is characterized in that, described brshless DC motor is not provided with position transducer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511009924.9A CN105515469A (en) | 2015-12-25 | 2015-12-25 | Brushless DC motor, control method and control device thereof |
| PCT/CN2016/111060 WO2017107899A1 (en) | 2015-12-25 | 2016-12-20 | Brushless direct-current electric motor and control method and apparatus therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511009924.9A CN105515469A (en) | 2015-12-25 | 2015-12-25 | Brushless DC motor, control method and control device thereof |
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| Publication Number | Publication Date |
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| CN105515469A true CN105515469A (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511009924.9A Pending CN105515469A (en) | 2015-12-25 | 2015-12-25 | Brushless DC motor, control method and control device thereof |
Country Status (2)
| Country | Link |
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| CN (1) | CN105515469A (en) |
| WO (1) | WO2017107899A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017107899A1 (en) * | 2015-12-25 | 2017-06-29 | 广东美的环境电器制造有限公司 | Brushless direct-current electric motor and control method and apparatus therefor |
| CN109356874A (en) * | 2018-10-30 | 2019-02-19 | 深圳和而泰智能控制股份有限公司 | Method for starting fan, device and computer storage medium |
| CN109936321A (en) * | 2018-05-02 | 2019-06-25 | 浙江达峰科技有限公司 | A kind of permanent-magnetic synchronous motor rotor pre-determined bit method |
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| CN2831608Y (en) * | 2005-05-11 | 2006-10-25 | 徐享渊 | Easy-to-start circuit structure of d.c. monophase brushless motor |
| CN101562421A (en) * | 2008-04-15 | 2009-10-21 | 福特全球技术公司 | Method for operating sensorless and brushless motors |
| CN103580563A (en) * | 2013-10-30 | 2014-02-12 | 航天科工海鹰集团有限公司 | Method for controlling brushless direct current motor |
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| JPH08205579A (en) * | 1995-01-19 | 1996-08-09 | Fujitsu General Ltd | Method for controlling brushless motor |
| CN101141105A (en) * | 2006-09-08 | 2008-03-12 | 圆创科技股份有限公司 | Non-sensing startup method for brushless DC motor |
| CN102868350B (en) * | 2012-09-21 | 2016-03-30 | 中南林业科技大学 | The accurate closed loop starting method of brushless DC motor without position sensor |
| CN103078573A (en) * | 2013-02-05 | 2013-05-01 | 安徽中家智锐科技有限公司 | Starting method of brushless DC (Direct Current) motor without Hall sensor |
| CN105515469A (en) * | 2015-12-25 | 2016-04-20 | 广东美的环境电器制造有限公司 | Brushless DC motor, control method and control device thereof |
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2015
- 2015-12-25 CN CN201511009924.9A patent/CN105515469A/en active Pending
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2016
- 2016-12-20 WO PCT/CN2016/111060 patent/WO2017107899A1/en active Application Filing
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| US5223771A (en) * | 1991-06-17 | 1993-06-29 | Western Digital (Singapore) Pte., Ltd. | Polyphase brushless DC Motor control |
| CN2831608Y (en) * | 2005-05-11 | 2006-10-25 | 徐享渊 | Easy-to-start circuit structure of d.c. monophase brushless motor |
| CN101562421A (en) * | 2008-04-15 | 2009-10-21 | 福特全球技术公司 | Method for operating sensorless and brushless motors |
| CN103580563A (en) * | 2013-10-30 | 2014-02-12 | 航天科工海鹰集团有限公司 | Method for controlling brushless direct current motor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017107899A1 (en) * | 2015-12-25 | 2017-06-29 | 广东美的环境电器制造有限公司 | Brushless direct-current electric motor and control method and apparatus therefor |
| CN109936321A (en) * | 2018-05-02 | 2019-06-25 | 浙江达峰科技有限公司 | A kind of permanent-magnetic synchronous motor rotor pre-determined bit method |
| CN109356874A (en) * | 2018-10-30 | 2019-02-19 | 深圳和而泰智能控制股份有限公司 | Method for starting fan, device and computer storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017107899A1 (en) | 2017-06-29 |
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