CN110417307A - Method for controlling direct current brushless motor, device, storage medium and controller - Google Patents
Method for controlling direct current brushless motor, device, storage medium and controller Download PDFInfo
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- CN110417307A CN110417307A CN201910592481.2A CN201910592481A CN110417307A CN 110417307 A CN110417307 A CN 110417307A CN 201910592481 A CN201910592481 A CN 201910592481A CN 110417307 A CN110417307 A CN 110417307A
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- brushless motor
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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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- 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
- H02P6/20—Arrangements for starting
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- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention proposes a kind of method for controlling direct current brushless motor, device, storage medium and controllers, this method comprises: receiving when opening machine control signal of DC brushless motor, detect the current rotating speed of the DC brushless motor；Judge the current rotating speed of the DC brushless motor whether less than the first pre-set velocity threshold value；When the current rotating speed of the DC brushless motor is less than the first pre-set velocity threshold value, Xiang Suoshu DC brushless motor sends motor drive signal, to control the DC brushless motor starting up.The present invention increases hardware cost without additional, that is, can avoid due to the excessively high damage to motor component of DC brushless motor inverse electromotive force, and control method realization is simple and reliable.
Description
Technical field
The present invention relates to motor control technology field more particularly to a kind of method for controlling direct current brushless motor, device, storages
Medium and controller.
Background technique
DC brushless motor is recently as microprocessor technology, novel power transistor, New Control Theory
Development, and low cost, high energy product permanent-magnet material appearance and a kind of New Type of Direct-current Machine for growing up.Brush DC
Motor is electromechanical integrated product the advantages of integrating alternating current generator and direct current generator, it had both had ac motor structure simple
The characteristics of series of advantages such as single, reliable for operation, easy to maintain, good speed adjustment features high but also with direct current generator operational efficiency, together
When without excitation loss.DC brushless motor it is a series of a little so that DC brushless motor uses in more and more scenes,
Especially field of household appliances.
Since motor is inductive load, it is well known that inductive load has reversed electronic when being switched on or off suddenly
Gesture, according to the difference of size of current, inverse electromotive force varies, and some is up to several hectovolts.If to inverse electromotive force not into
Row clamper is evaded, and has irreversible damage to the service life of component, reliability.Direct current generator is waited at runtime in quick frequency
When numerous startup-shutdown, motor can generate the inverse electromotive force of hectovolt, on bus capacitor of its power supply of this voltage superposition, cause
Its busbar voltage is raised, and capacitance voltage at this time is operating voltage to be added with inverse electromotive force, if voltage is excessive, can be more than
There is irreversible influence in the service life of the pressure resistance of capacitor, in this way meeting capacitor, if do not inhibited to voltage, can only use the electricity of more high voltage
Hold, but can also have a problem that, excessively high voltage can impact other electronic components such as power supply chip, eventually lead to device
Damage, influences reliability.But if increasing the clamp circuit or leadage circuit of inverse electromotive force, it will increase the cost of control.
If can be in the case where not increasing cost, to avoid damage of the inverse electromotive force to device, this will be one very big
Technological progress.
Summary of the invention
The embodiment of the present invention proposes a kind of method for controlling direct current brushless motor, device, storage medium and controller, with solution
Certainly in the prior art by additional increase inverse electromotive force voltage controller circuit and clamp circuit, to avoid motor reversely electric
Kinetic potential is excessively high to avoid the damage to component, needs additionally to increase cost and the complicated problem of control.
The embodiment of the invention provides a kind of method for controlling direct current brushless motor, which comprises
When opening machine control signal of DC brushless motor is received, the current rotating speed of the DC brushless motor is detected；
Judge the current rotating speed of the DC brushless motor whether less than the first pre-set velocity threshold value；
When the current rotating speed of the DC brushless motor is less than the first pre-set velocity threshold value, Xiang Suoshu brush DC
Motor sends motor drive signal, to control the DC brushless motor starting up.
Optionally, before the current rotating speed of the detection DC brushless motor, the method also includes:
The first receiving time of machine control signal is opened described in acquisition；
Obtain receive it is described open machine control signal before receive the pass machine control signal of the DC brushless motor
The second receiving time；
Calculate the time difference between first receiving time and second receiving time；
When the time difference being less than preset time threshold, the current rotating speed of the detection DC brushless motor is executed
The step of.
Optionally, before the time difference between the calculating first receiving time and second receiving time,
The method also includes:
Obtain the history log of the DC brushless motor；
From extraction institute before the pass machine control signal for receiving the DC brushless motor in the history log
State the history revolving speed of DC brushless motor；
When the history revolving speed of the DC brushless motor is greater than the second pre-set velocity threshold value, executes and described calculate described the
The step of time difference between one receiving time and second receiving time.
Optionally, the current rotating speed of the detection DC brushless motor, comprising:
Detect the current phase current of the DC brushless motor；
The current rotating speed of the DC brushless motor is calculated according to the current phase current.
Another embodiment of the present invention provides a kind of control device for direct-current brushless motor, described device includes:
Detection module detects the brush DC electricity for receiving when opening machine control signal of DC brushless motor
The current rotating speed of machine；
Judgment module, for judging the current rotating speed of the DC brushless motor whether less than the first pre-set velocity threshold value；
Control module, for when the current rotating speed of the DC brushless motor be less than the first pre-set velocity threshold value when,
Motor drive signal is sent to the DC brushless motor, to control the DC brushless motor starting up.
Optionally, described device further include:
First obtains module, for obtaining before the current rotating speed that the detection module detects the DC brushless motor
Take first receiving time for opening machine control signal；
Second obtains module, for obtain receive it is described open machine control signal before receive the brush DC electricity
Second receiving time of the pass machine control signal of machine；
Computing module, for calculating the time difference between first receiving time and second receiving time；
The detection module is specifically used for executing described in the detection when the time difference being less than preset time threshold
The operation of the current rotating speed of DC brushless motor.
Optionally, described device further include:
Third obtains module, for calculating first receiving time and second receiving time in the computing module
Between time difference before, obtain the history log of the DC brushless motor；
Extraction module, for extracting from the history log in the shutdown control for receiving the DC brushless motor
The history revolving speed of signal foregoing description DC brushless motor processed；
The computing module is greater than the second pre-set velocity threshold value specifically for the history revolving speed when the DC brushless motor
When, execute the operation for calculating the time difference between first receiving time and second receiving time.
Optionally, the detection module, comprising:
Detection unit, for detecting the current phase current of the DC brushless motor；
Computing unit, for calculating the current rotating speed of the DC brushless motor according to the current phase current.
In addition, it is stored thereon with computer program the present invention also provides a kind of computer readable storage medium, the program
The step of method as described above is realized when being executed by processor.
In addition, the present invention also provides a kind of controller, including memory, processor and storage are on a memory and can be
The step of computer program run on processor, the processor realizes method as described above when executing described program.
Method for controlling direct current brushless motor, device, storage medium and controller provided in an embodiment of the present invention, when receiving
When opening machine control signal of DC brushless motor detects the current rotating speed of DC brushless motor, presets when speed is less than
Threshold speed when, retransmit motor drive signal, guarantee motor inverse electromotive force very little at this time, electronic component will not be because of
Overvoltage impact and damage, reduce the inverse electromotive force of motor on the basis of not increasing cost.It can be seen that the present invention is without additional
Increase hardware cost, that is, can avoid due to the excessively high damage to motor component of DC brushless motor inverse electromotive force, and controls
Method processed is realized simple, reliable.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is a kind of flow diagram of method for controlling direct current brushless motor provided in an embodiment of the present invention；
Fig. 2 be another embodiment of the present invention provides a kind of method for controlling direct current brushless motor flow diagram；
Fig. 3 is a kind of structural schematic diagram of control device for direct-current brushless motor of the embodiment of the present invention.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term), there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, it should be understood that have in the context of the prior art
The consistent meaning of meaning, and unless otherwise will not be explained in an idealized or overly formal meaning by specific definitions.
DC brushless motor is switched under static state, and inverse electromotive force is substantially not present, if motor when running at high speed,
Shutdown is switched on suddenly suddenly, at this time due to the inertia of motor, it is caused to will appear a very big inverse electromotive force, reversed electricity
The voltage superposition of kinetic potential and bus capacitor influences the service life of capacitor more than the pressure resistance of capacitor, and excessively high voltage can impact electricity
Other electronic components such as source chip, eventually leading to electromechanical device damage can lead if the Switching Power Supply of the voltage and mainboard connects
Switching Power Supply overvoltage protection is caused, reliability is influenced.Thus the embodiment of the invention provides a kind of method for controlling direct current brushless motor,
When receiving when opening machine control signal of DC brushless motor, the current rotating speed of DC brushless motor is detected, speed is worked as
When less than preset threshold speed, motor drive signal is retransmited, guarantees motor inverse electromotive force very little at this time, electronic component
It will not be damaged because of overvoltage impact.
Fig. 1 diagrammatically illustrates the flow chart of the method for controlling direct current brushless motor of one embodiment of the invention.Referring to figure
1, the method for controlling direct current brushless motor that the embodiment of the present invention proposes specifically includes step S11~S13, as follows:
S11, when opening machine control signal of DC brushless motor is received, that detects the DC brushless motor works as forward
Speed.
The detection to the current rotating speed of DC brushless motor can be realized by the following method in the present embodiment, specific as follows:
The current phase current for detecting the DC brushless motor calculates the current of the DC brushless motor according to the current phase current
Revolving speed.
In a specific embodiment, it if the frequency of initial detecting is speed per second, needs multiplied by default value, with
The speed of specified unit is converted the frequency to, such as: speed per minute.
S12, judge the current rotating speed of the DC brushless motor whether less than the first pre-set velocity threshold value.
Wherein, the first pre-set velocity threshold value can be configured and adjust according to practical application, not make to this present invention specific
It limits.
S13, when the current rotating speed of the DC brushless motor be less than the first pre-set velocity threshold value when, Xiang Suoshu direct current
Brushless motor sends motor drive signal, to control the DC brushless motor starting up.
In the present embodiment, to avoid motor in the case where running at high speed, user closes motor suddenly, and then starting is electric suddenly again
Machine causes motor inverse electromotive force excessively high come generation the case where avoiding the damage to component, is receiving brush DC every time
When opening machine control signal of motor can detect the speed of motor, if motor speed is less than setting value, motor then gives motor driven
Signal.If motor speed is greater than the set value, motor speed is waited to reduce, when speed drops below setting value, then gives motor
Driving signal guarantees that motor inverse electromotive force very little, electronic component will not be damaged because of overvoltage impact at this time, not increased
The inverse electromotive force of motor is reduced on the basis of cost.
The present invention increases hardware cost without additional, that is, can avoid since DC brushless motor inverse electromotive force is excessively high to electricity
The damage of machine component, and control method realization is simple and reliable.
Fig. 2 diagrammatically illustrates the flow chart of the method for controlling direct current brushless motor of another embodiment of the present invention.Reference
Fig. 2, the method for controlling direct current brushless motor that the embodiment of the present invention proposes specifically include step S21~S26, as follows:
S21, when opening machine control signal of DC brushless motor is received, first that machine control signal is opened described in acquisition receives
Time.
S22, obtain receive it is described open machine control signal before receive the shutdown control of the DC brushless motor
Second receiving time of signal.
In the present embodiment, controller receive to DC brushless motor open machine control signal or close machine control signal
When, it needs to record specific receiving time, searches and obtain when in order to carry out Brush-Less DC motor control.
Time difference between S23, calculating first receiving time and second receiving time.
S24, when the time difference be less than preset time threshold when, detect the current rotating speed of the DC brushless motor.
Wherein, the time threshold can be configured and adjust according to practical application scene, such as may be configured as arriving for several seconds
More than ten seconds, this present invention is not especially limited.
S25, judge the current rotating speed of the DC brushless motor whether less than the first pre-set velocity threshold value.
S26, when the current rotating speed of the DC brushless motor be less than the first pre-set velocity threshold value when, Xiang Suoshu direct current
Brushless motor sends motor drive signal, to control the DC brushless motor starting up.
In practical applications, it, at this time due to the inertia of motor, may cause in the case where unexpected booting in unexpected shutdown
It will appear a very big inverse electromotive force, and the voltage superposition of inverse electromotive force and bus capacitor can damage component, if should
The connection of the Switching Power Supply of voltage and mainboard, will lead to Switching Power Supply overvoltage protection.
In order to solve the above technical problems, the present invention receives when opening machine control signal of DC brushless motor, according to booting
The time difference of first receiving time of control signal and the second receiving time of the pass machine control signal received before, judgement are
It is no to there is shutdown suddenly in unexpected the case where being switched on, if the time difference is less than preset time threshold, it is determined that there are unexpected shutdown
It in unexpected the case where being switched on, is detected at this time by the current rotating speed to DC brushless motor, when speed is less than preset speed
When spending threshold value, motor drive signal is retransmited, guarantees that motor inverse electromotive force very little, electronic component will not be because of over-voltages at this time
It impacts and damages.
Further, DC brushless motor is switched under static state, and inverse electromotive force is substantially not present, if motor is in height
When speed operating, shutdown is switched on suddenly suddenly, at this time due to the inertia of motor, causes it will appear one very big reversed electronic
Gesture, therefore before time difference of the present invention between the calculating first receiving time and second receiving time, it obtains
Take the history log of the DC brushless motor；It is extracted from the history log and is receiving the brush DC
The history revolving speed of the pass machine control signal foregoing description DC brushless motor of motor；When the history revolving speed of the DC brushless motor
When greater than the second pre-set velocity threshold value, determines that motor is in the state of running at high speed before being powered off, need to calculate described first at this time
Time difference between receiving time and second receiving time, if the time difference is less than preset time threshold, it is determined that exist
Shutdown suddenly is detected by the current rotating speed to DC brushless motor, in unexpected the case where being switched on when speed is less than at this time
When preset threshold speed, motor drive signal is retransmited, guarantees that motor inverse electromotive force very little, electronic component will not at this time
It is damaged because of overvoltage impact.
Wherein, the second pre-set velocity threshold value can be configured and adjust according to practical application, not make to this present invention specific
It limits.
For embodiment of the method, for simple description, therefore, it is stated as a series of action combinations, but this field
Technical staff should be aware of, and embodiment of that present invention are not limited by the describe sequence of actions, because implementing according to the present invention
Example, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art should also know that, specification
Described in embodiment belong to preferred embodiment, the actions involved are not necessarily necessary for embodiments of the present invention.
Fig. 3 diagrammatically illustrates the structural schematic diagram of the control device for direct-current brushless motor of one embodiment of the invention.Ginseng
According to Fig. 3, the control device for direct-current brushless motor of the embodiment of the present invention specifically includes detection module 301, judgment module 302 and control
Molding block 303, in which:
Detection module 301 detects the brush DC for receiving when opening machine control signal of DC brushless motor
The current rotating speed of motor；
Judgment module 302, for judging the current rotating speed of the DC brushless motor whether less than the first pre-set velocity threshold
Value；
Control module 303 is less than the first pre-set velocity threshold value for the current rotating speed when the DC brushless motor
When, Xiang Suoshu DC brushless motor sends motor drive signal, to control the DC brushless motor starting up.
In an alternative embodiment of the invention, described device further includes the first acquisition module, the second acquisition module and meter
Calculate module, in which:
First obtains module, for before the detection module 301 detects the current rotating speed of the DC brushless motor,
The first receiving time of machine control signal is opened described in acquisition；
Second obtains module, for obtain receive it is described open machine control signal before receive the brush DC electricity
Second receiving time of the pass machine control signal of machine；
Computing module, for calculating the time difference between first receiving time and second receiving time；
The detection module 301 is specifically used for executing the detection institute when the time difference being less than preset time threshold
State the operation of the current rotating speed of DC brushless motor.
Further, described device further includes that third obtains module and extraction module, in which:
Third obtains module, for calculating first receiving time and second receiving time in the computing module
Between time difference before, obtain the history log of the DC brushless motor；
Extraction module, for extracting from the history log in the shutdown control for receiving the DC brushless motor
The history revolving speed of signal foregoing description DC brushless motor processed；
The computing module is greater than the second pre-set velocity threshold value specifically for the history revolving speed when the DC brushless motor
When, execute the operation for calculating the time difference between first receiving time and second receiving time.
In an alternative embodiment of the invention, the detection module 301, including detection unit and computing unit, in which:
Detection unit, for detecting the current phase current of the DC brushless motor；
Computing unit, for calculating the current rotating speed of the DC brushless motor according to the current phase current.
For device embodiment, since it is basically similar to the method embodiment, related so being described relatively simple
Place illustrates referring to the part of embodiment of the method.
The apparatus embodiments described above are merely exemplary, wherein described, unit can as illustrated by the separation member
It is physically separated with being or may not be, component shown as a unit may or may not be physics list
Member, it can it is in one place, or may be distributed over multiple network units.It can be selected according to the actual needs
In some or all of the modules achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying creativeness
Labour in the case where, it can understand and implement.
Method for controlling direct current brushless motor provided in an embodiment of the present invention, device, when receiving opening for DC brushless motor
When machine control signal, the current rotating speed of DC brushless motor is detected, when speed is less than preset threshold speed, then is sent out
Motor drive signal is sent, guarantees that motor inverse electromotive force very little, electronic component will not be damaged because of overvoltage impact at this time, In
The inverse electromotive force that motor is reduced on the basis of cost is not increased.It can be seen that the present invention increases hardware cost without additional
Avoid due to the excessively high damage to motor component of DC brushless motor inverse electromotive force, and control method realize it is simple, can
It leans on.
In addition, it is stored thereon with computer program the embodiment of the invention also provides a kind of computer readable storage medium,
The step of program realizes method as described above when being executed by processor.
In the present embodiment, if module/unit that the control device for direct-current brushless motor integrates is with SFU software functional unit
Form realize and when sold or used as an independent product, can store in a computer readable storage medium.
Based on this understanding, the present invention realizes all or part of the process in above-described embodiment method, can also pass through computer journey
Sequence is completed to instruct relevant hardware, and the computer program can be stored in a computer readable storage medium, the meter
Calculation machine program is when being executed by processor, it can be achieved that the step of above-mentioned each embodiment of the method.Wherein, the computer program packet
Include computer program code, the computer program code can for source code form, object identification code form, executable file or
Certain intermediate forms etc..The computer-readable medium may include: any reality that can carry the computer program code
Body or device, recording medium, USB flash disk, mobile hard disk, magnetic disk, CD, computer storage, read-only memory (ROM, Read-
Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and
Software distribution medium etc..It should be noted that the content that the computer-readable medium includes can be according in jurisdiction
Legislation and the requirement of patent practice carry out increase and decrease appropriate, such as in certain jurisdictions, according to legislation and patent practice, meter
Calculation machine readable medium does not include electric carrier signal and telecommunication signal.
Controller provided in an embodiment of the present invention, including memory, processor and storage on a memory and can handled
The computer program run on device, the processor realize above-mentioned each DC brushless motor control when executing the computer program
Step in embodiment of the method processed, such as S11~S13 shown in FIG. 1.Alternatively, the processor executes the computer program
The function of each module/unit in the above-mentioned each control device for direct-current brushless motor embodiment of Shi Shixian, such as detection mould shown in Fig. 3
Block 301, judgment module 302 and control module 303.
Illustratively, the computer program can be divided into one or more module/units, one or more
A module/unit is stored in the memory, and is executed by the processor, to complete the present invention.It is one or more
A module/unit can be the series of computation machine program instruction section that can complete specific function, and the instruction segment is for describing institute
State implementation procedure of the computer program in the control device for direct-current brushless motor.For example, the computer program can be by
It is divided into detection module 301, judgment module 302 and control module 303.
The controller may include, but be not limited only to, processor, memory.It will be understood by those skilled in the art that this reality
Applying the controller in example may include more or fewer components, perhaps combine certain components or different components, such as institute
Stating controller can also include input-output equipment, network access equipment, bus etc..
The processor can be central processing unit (Central Processing Unit, CPU), can also be it
His general processor, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor is also possible to any conventional processor
Deng the processor is the control centre of the controller, utilizes each portion of various interfaces and the entire controller of connection
Point.
The memory can be used for storing the computer program and/or module, and the processor is by operation or executes
Computer program in the memory and/or module are stored, and calls the data being stored in memory, described in realization
The various functions of controller.The memory can mainly include storing program area and storage data area, wherein storing program area can
Application program needed for storage program area, at least one function (such as sound-playing function, image player function etc.) etc.；It deposits
Storage data field, which can be stored, uses created data (such as audio data, phone directory etc.) etc. according to mobile phone.In addition, memory
It may include high-speed random access memory, can also include nonvolatile memory, such as hard disk, memory, plug-in type hard disk,
Intelligent memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD) card, flash card (Flash
Card), at least one disk memory, flush memory device or other volatile solid-state parts.
It will be appreciated by those of skill in the art that although some embodiments in this include included in other embodiments
Certain features rather than other feature, but the combination of the feature of different embodiments means to be within the scope of the present invention simultaneously
And form different embodiments.For example, in the following claims, the one of any of embodiment claimed all may be used
Come in a manner of in any combination using.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of method for controlling direct current brushless motor, which is characterized in that the described method includes:
When opening machine control signal of DC brushless motor is received, the current rotating speed of the DC brushless motor is detected；
Judge the current rotating speed of the DC brushless motor whether less than the first pre-set velocity threshold value；
When the current rotating speed of the DC brushless motor is less than the first pre-set velocity threshold value, Xiang Suoshu DC brushless motor
Motor drive signal is sent, to control the DC brushless motor starting up.
2. method for controlling direct current brushless motor as described in claim 1, which is characterized in that in the detection brush DC
Before the current rotating speed of motor, the method also includes:
The first receiving time of machine control signal is opened described in acquisition；
Obtain receive it is described open machine control signal before receive the DC brushless motor pass machine control signal the
Two receiving times；
Calculate the time difference between first receiving time and second receiving time；
When the time difference being less than preset time threshold, the step of the current rotating speed of the detection DC brushless motor is executed
Suddenly.
3. method for controlling direct current brushless motor as claimed in claim 2, which is characterized in that calculate first reception described
Before time difference between time and second receiving time, the method also includes:
Obtain the history log of the DC brushless motor；
It is extracted from the history log straight in the pass machine control signal foregoing description for receiving the DC brushless motor
Flow the history revolving speed of brushless motor；
When the history revolving speed of the DC brushless motor is greater than the second pre-set velocity threshold value, executes the calculating described first and connect
The step of time difference between time receiving between second receiving time.
4. method for controlling direct current brushless motor as described in any one of claims 1-3, which is characterized in that the detection is described straight
Flow the current rotating speed of brushless motor, comprising:
Detect the current phase current of the DC brushless motor；
The current rotating speed of the DC brushless motor is calculated according to the current phase current.
5. a kind of control device for direct-current brushless motor, which is characterized in that described device includes:
Detection module detects the DC brushless motor for receiving when opening machine control signal of DC brushless motor
Current rotating speed；
Judgment module, for judging the current rotating speed of the DC brushless motor whether less than the first pre-set velocity threshold value；
Control module, for when the current rotating speed of the DC brushless motor be less than the first pre-set velocity threshold value when, to institute
It states DC brushless motor and sends motor drive signal, to control the DC brushless motor starting up.
6. control device for direct-current brushless motor as claimed in claim 5, which is characterized in that described device further include:
First obtains module, for obtaining institute before the current rotating speed that the detection module detects the DC brushless motor
State out the first receiving time of machine control signal；
Second obtains module, for obtains open machine control signal described in receive before receive the DC brushless motor
Close the second receiving time of machine control signal；
Computing module, for calculating the time difference between first receiving time and second receiving time；
The detection module is specifically used for when the time difference being less than preset time threshold, executes the detection direct current
The operation of the current rotating speed of brushless motor.
7. control device for direct-current brushless motor as claimed in claim 6, which is characterized in that described device further include:
Third obtains module, for calculating between first receiving time and second receiving time in the computing module
Time difference before, obtain the history log of the DC brushless motor；
Extraction module, for being extracted from the history log in the shutdown control letter for receiving the DC brushless motor
The history revolving speed of number foregoing description DC brushless motor；
The computing module, specifically for when the history revolving speed of the DC brushless motor be greater than the second pre-set velocity threshold value when,
Execute the operation of the time difference between the calculating first receiving time and second receiving time.
8. such as the described in any item control device for direct-current brushless motor of claim 5-7, which is characterized in that the detection module,
Include:
Detection unit, for detecting the current phase current of the DC brushless motor；
Computing unit, for calculating the current rotating speed of the DC brushless motor according to the current phase current.
9. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is held by processor
It is realized when row such as the step of any one of claim 1-4 the method.
10. a kind of controller, which is characterized in that memory, processor and storage can be run on a memory and on a processor
Computer program, which is characterized in that the processor is realized as described in claim any one of 1-4 just when executing described program
The step of method.
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| CN101010870A (en) * | 2004-10-21 | 2007-08-01 | 肖普瓦克公司 | System and method of restarting a switched reluctance motor after a rapid cycling of power |
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Application publication date: 20191105 |