CN106171247A - The control method of drive system and the control method of electric tool - Google Patents
The control method of drive system and the control method of electric tool Download PDFInfo
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- CN106171247A CN106171247A CN201610524454.8A CN201610524454A CN106171247A CN 106171247 A CN106171247 A CN 106171247A CN 201610524454 A CN201610524454 A CN 201610524454A CN 106171247 A CN106171247 A CN 106171247A
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- Prior art keywords
- control method
- rotating speed
- motor
- electric current
- drive system
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/42—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a horizontal axis, e.g. cutting-cylinders
- A01D34/56—Driving mechanisms for the cutters
- A01D34/58—Driving mechanisms for the cutters electric
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/76—Driving mechanisms for the cutters
- A01D34/78—Driving mechanisms for the cutters electric
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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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
Present invention is disclosed the control method of a kind of drive system and the control method of electric tool, including: the upper brachium pontis of power driver module, an external loading, the lower brachium pontis of power driver module and current sample module composition primary Ioops, obtain the electric current in described loop by described current sample module, then controlled described power driver module by described microcontroller according to described electric current and change the output to described external loading.When making to start shooting, motor is not necessarily in maximum (top) speed, thus reduces noise, is suitable for electric tool and breaks through the requirement of noise safety；And owing to motor rotary speed is low, therefore electric current is little, it is advantageously ensured that the relevant criterion reaching EMC；Additionally, change motor rotary speed according to actual current size, effectively have been directed to the load state run into during operation, it is possible to realize self adaptation, thus reach energy-conservation effect.
Description
Technical field
The present invention relates to drive system and electric tool, particularly relate to the control method of a kind of drive system and electronic work
The control method of tool.
Background technology
Conventional hay mover is usually gasoline type hay mover and electrodynamic type hay mover.Gasoline type hay mover can produce waste gas,
Under the requirement advocating energy-conserving and environment-protective, people are more likely to be with the electrodynamic type hay mover of clean energy-saving.Existing electrodynamic type cuts
Grass machine generally uses alternating current, needs to use electric wire to connect with domestic power supply, due to the use of electric wire, limits the work of hay mover
Make scope, and the motility used.Also have and use lead-acid battery to power, but owing to the manufacturing of lead-acid battery can be polluted
Environment, is the most also being phased out.
Along with electric tool, the development of garden instrument industry, home-use electronic and garden instrument wirelessization, portability
Gradually becoming trend, lithium electricity class instrument the most increasingly to be welcome by consumer, lithium battery is a kind of light novel power supply mode,
Use in multiple fields such as electric motor cars.But lithium electric tool exists following not enough on using: restricted by battery capacity, make
It is restricted with the time；And if increase battery capacity, volume and the weight of machine certainly will be increased, the biggest while affecting portability
Add greatly cost.
When being applied on garden hay mover by lithium electricity power supply, the problems referred to above are encountered equally.Consumer selects domestic front yard
During institute's hay mover, except considering the price of machine, quality, practicality and ease for use also must take into.At present, lithium electricity is mowed
Machine commonly uses the lithium electricity battery of 36V, 2.6Ah as power supply, the most sustainable mowing level ground about 220m after completely filling2Though, energy
Meeting major part family to use, but also part Family needs cuts greater area of lawn, after electric quantity consumption, only in
Way stops, and is again full of by electricity and just can reuse, and directly affects the use impression of consumer.It is to say, electricity is limited
It is a defect of lithium electricity hay mover,
But, the control program of current lithium electricity hay mover is exaggerated this defect further.Concrete, current control
After scheme is for being on switch, motor (band blade) starts the maximum (top) speed that soft start can bear until motor, thus carries out
Mowing action.This control program has many drawbacks, and such as, VGA CARD is big, causes safety difficulty to strengthen；Start zero load
Electric current is big, affects EMC (Electro Magnetic Compatibility)；And, electric quantity consumption is big, the most energy-conservation.
Therefore, how improving the problems referred to above is the task of top priority.
Summary of the invention
It is an object of the invention to provide the control method of a kind of drive system and the control method of electric tool, solve existing
Having electric tool VGA CARD in technology big, start no-load current is big, the problems such as electric quantity consumption is big.
For solving the problems referred to above, the present invention provides the control method of a kind of drive system, described drive system to include: power
Drive module, current sample module and microcontroller；The upper brachium pontis of described power driver module connects the positive pole of a power supply, institute
The lower brachium pontis stating power driver module connects the input of described current sample module, and the outfan of described current sample module is even
Connect the negative pole of described power supply, described upper brachium pontis, an external loading, described lower brachium pontis and described current sample module composition one time
Road, described current sample module obtains the electric current in described loop；Described microcontroller and described current sample module and described
Power driver module is connected；Described microcontroller controls described power driver module according to described electric current and changes described outside
The output of load.
Optionally, for the control method of described drive system, described external loading is a motor.
Optionally, for the control method of described drive system, described electric current has a threshold value, described motor have to
Few first rotating speed and the second rotating speed, described second rotating speed is more than described first rotating speed；When described electric current reaches described threshold value, institute
State motor and be in the second rotating speed；When described electric current is not up to described threshold value, described motor is in the first rotating speed.
Optionally, for the control method of described drive system, described second rotating speed is the 90%-of maximum (top) speed
100%.
Optionally, for the control method of described drive system, described first rotating speed is the 50%-of maximum (top) speed
80%.
Optionally, for the control method of described drive system, if described motor is in the first rotating speed, when described electric current
When reaching described threshold value, described motor is made to be in the second rotating speed immediately.
Optionally, for the control method of described drive system, if described motor is in the second rotating speed, when described electric current
Not up to during described threshold value, described motor after time delay one time period, is made to be in the first rotating speed.
Optionally, for the control method of described drive system, the described time period is the 1-5 second.
Optionally, for the control method of described drive system, if electric current reaches described threshold value within the described time period,
Remain in that described motor is in the second rotating speed.
Optionally, for the control method of described drive system, described drive system also includes a DC/DC controller,
The power end of described microcontroller is connected with the positive pole of described power supply by described DC/DC controller.
The present invention also provides for the control method of a kind of electric tool, and described electric tool includes: power supply, drive system and outer
Section load, described power supply powers to described external loading and drive system, and described drive system includes: power driver module, electricity
Stream sampling module and microcontroller；The upper brachium pontis of described power driver module connects the positive pole of a power supply, described power drive
The lower brachium pontis of module connects the input of described current sample module, and the outfan of described current sample module connects described power supply
Negative pole, described upper brachium pontis, an external loading, described lower brachium pontis and described current sample module composition primary Ioops, described electric current
Sampling module obtains the electric current in described loop；Described microcontroller and described current sample module and described power driver module
It is connected；
The control method of described electric tool includes:
Start external loading；
Described microcontroller controls described external loading by described power driver module and is in the first rotating speed；
Carrying out operation, described current sample module detects the electric current in described loop, and described microcontroller is according to described electricity
Power driver module described in flow control changes the output to described external loading.
Optionally, for the control method of described electric tool, described external loading is a motor.
Optionally, for the control method of described electric tool, described electric current has a threshold value, described motor have to
Few described first rotating speed and the second rotating speed, described second rotating speed is more than described first rotating speed, when described electric current reaches described threshold value
Time, described microcontroller controls described motor by described power driver module and is in the second rotating speed, when described electric current is not up to
During described threshold value, described microcontroller controls described motor by described power driver module and is in the first rotating speed.
Optionally, for the control method of described electric tool, described second rotating speed is the 90%-of maximum (top) speed
100%.
Optionally, for the control method of described electric tool, described first rotating speed is the 50%-of maximum (top) speed
80%.
Optionally, for the control method of described electric tool, if described motor is in the first rotating speed, when described electric current
When reaching described threshold value, described motor is made to be in the second rotating speed immediately.
Optionally, for the control method of described electric tool, if described motor is in the second rotating speed, when described electric current
Not up to during described threshold value, described motor after time delay one time period, is made to be in the first rotating speed.
Optionally, for the control method of described electric tool, the described time period is the 1-5 second.
Optionally, for the control method of described electric tool, if electric current reaches described threshold value within the described time period,
Remain in that described motor is in the second rotating speed.
Optionally, for the control method of described electric tool, described electric tool is hay mover.
Compared with prior art, the present invention provides the control method of drive system and the control method of electric tool, institute
State brachium pontis, an external loading, described lower brachium pontis and described current sample module composition primary Ioops, by described current sample mould
Block obtains the electric current in described loop, is then controlled described power driver module by described microcontroller according to described electric current and changes
Output to described external loading.Thus so that during start, motor is not necessarily in maximum (top) speed, thus reduces noise,
It is suitable for electric tool and breaks through the requirement of noise safety；And owing to motor rotary speed is low, therefore electric current is little, it is advantageously ensured that and reach EMC
Relevant criterion；Additionally, change motor rotary speed according to actual current size, effectively have been directed to the load shape run into during operation
Condition, it is possible to realize self adaptation, thus reach energy-conservation effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of drive system in one embodiment of the invention；
Fig. 2 is the flow chart of the control method of drive system in one embodiment of the invention；
Fig. 3 is the structural representation of electric tool in one embodiment of the invention；
Fig. 4 is the flow chart of the control method of electric tool in one embodiment of the invention.
Detailed description of the invention
Below in conjunction with schematic diagram, the control method of the drive system of the present invention and the control method of electric tool are carried out
More detailed description, which show the preferred embodiments of the present invention, it should be appreciated that those skilled in the art can revise at this
The present invention described, and still realize the advantageous effects of the present invention.Therefore, description below is appreciated that for this area skill
Art personnel's is widely known, and is not intended as limitation of the present invention.
Referring to the drawings the present invention the most more particularly described below in the following passage.Want according to following explanation and right
Book, advantages and features of the invention is asked to will be apparent from.It should be noted that, accompanying drawing all uses the form simplified very much and all uses non-
Ratio accurately, only in order to facilitate, to aid in illustrating lucidly the purpose of the embodiment of the present invention.
The core concept of the present invention is to provide the control method of a kind of drive system and the control method of electric tool, logical
Cross described current sample module and obtain the electric current in loop, then driven module by microcontroller according to described current-control power
Change the output to external loading.
Incorporated by reference to Fig. 1-Fig. 4, the control method of the drive system of the present invention and the control method of electric tool are carried out below
It is discussed in detail.The structural representation of drive system during wherein Fig. 1 is one embodiment of the invention；Fig. 2 is in one embodiment of the invention
The flow chart of the control method of drive system；Fig. 3 is the structural representation of electric tool in one embodiment of the invention；Fig. 4 is this
Invent the flow chart of the control method of electric tool in an embodiment.
As it is shown in figure 1, the drive system in the present invention includes: power driver module, current sample module and microcontroller
Device；The upper brachium pontis of described power driver module connects the positive pole of a power supply, and the lower brachium pontis of described power driver module connects described
The input of current sample module, the outfan of described current sample module connects the negative pole of described power supply, described upper brachium pontis,
External loading, described lower brachium pontis and described current sample module composition primary Ioops, described current sample module obtains described loop
In electric current；Described microcontroller is connected with described current sample module and described power driver module；Concrete, described micro-
Controller includes a control end and a collection terminal, and described collection terminal is connected with the signal end of described current sample module, described
Control end to be connected with the receiving terminal of described power driver module.
As it is shown in figure 1, described external loading is a motor, as a example by three-phase electricity, described upper brachium pontis connects the U line of motor
(input), described lower brachium pontis connects V line and the W line (outfan) of described motor, such that it is able to realize the driving to motor.
Being also shown in by Fig. 1, described drive system also includes a DC/DC controller, and the power end of described microcontroller passes through
Described DC/DC controller is connected with the positive pole of described power supply, thus described microcontroller can realize receiving described electric current adopts
Original mold block obtain current signal, and transmit control signal to described power driver module.
In the present invention, described control method includes: described microcontroller controls described power drive according to described electric current
Module changes the output to described external loading.As in figure 2 it is shown, to drive system in the present invention as a example by external loading is as motor
Control method be described in detail: first start motor；The most described microcontroller controls described power according to described electric current
Module is driven to change the rotating speed of described motor.When revolution, described electric current has a threshold value, and described motor has at least
One rotating speed and the second rotating speed, described second rotating speed is more than described first rotating speed, when described electric current reaches described threshold value, described horse
Reaching and be in the second rotating speed, when described electric current is not up to described threshold value, described motor is in the first rotating speed.Concrete, described horse
Reaching present rotating speed is driven module to change by described microcontroller according to described current-control power.
In a preferable selection, described second rotating speed is maximum (top) speed.Certainly, described second rotating speed might be less that
Big rotating speed, it is only necessary to more than described first rotating speed, the most described second rotating speed is the 90%-100% of maximum (top) speed, such as
95% etc..Described first rotating speed can be the 50%-80% of maximum (top) speed, such as, 60%, 70% etc..Further, Ke Yishe
Putting more rotating speed, same, corresponding threshold value is also required to become many, and those skilled in the art are in one threshold value of above-mentioned employing and two
In the case of individual rotating speed, it is possible to according to being actually needed flexible design.
Owing to when just starting, motor is generally in Light Condition, thus electric current is less than described threshold value, now described
Power driver module controls described motor and is in the first rotating speed, and described first rotating speed is less than the maximum (top) speed of motor.Visible, due to
Described motor can be controlled be in less than rotation in the case of maximum (top) speed, it is thus possible to effectively guarantee that start-up noises is low, such as
Garden instrument can be suitable for and break through the requirement of noise safety, and owing to motor rotary speed is low, therefore electric current is little, it is advantageously ensured that and reaches
Relevant criterion to EMC.
When operation, described current sample module can persistently detect the electric current (i.e. load current) in described loop.Institute
State microcontroller and control the rotating speed of the described power driver module described motor of change according to the size of described electric current.Concrete, with
As a example by arranging a threshold value, described microcontroller judges whether the electric current of detection reaches threshold value, if reaching described threshold value, the most immediately
Motor is made to be in the second rotary regimes, to guarantee to realize high-quality operation；If the most described threshold value, keep described
Motor is in the first rotating speed.
It is understood that during in operation process, load is in change, stable in order to ensure operation process, if described
Motor is in the second rotating speed, when detecting that described electric current is not up to described threshold value (electric current diminishes), after time delay one time period
Described motor is made to be in the first rotating speed, for example, it is possible to the time of time delay 1-5 second, if electric current is still not up to described threshold value,
Described motor is then made to be in the first rotating speed.If electric current reaches described threshold value within the described time period, remain in that described motor
It is in the second rotating speed.Can so last up to required operation.
The present invention also provides for the control method of a kind of electric tool, refer to Fig. 3, and described electric tool includes: power supply, drive
Dynamic system and external loading, described power supply powers to described external loading and drive system.Described drive system includes: power drives
Dynamic model block, current sample module and microcontroller；The upper brachium pontis of described power driver module connects the positive pole of a power supply, described
The lower brachium pontis of power driver module connects the input of described current sample module, and the outfan of described current sample module connects
The negative pole of described power supply, described upper brachium pontis, an external loading, described lower brachium pontis and described current sample module composition primary Ioops,
Described current sample module obtains the electric current in described loop；Described microcontroller and described current sample module and described power
Driving module is connected；Concrete, described microcontroller includes a control end and a collection terminal, described collection terminal and described electric current
The signal end of sampling module is connected, and described control end is connected with the receiving terminal of described power driver module.
For example, described electric tool for example, garden instrument, e.g. hay mover, more specifically, such as, can be
Brushless lithium electricity hay mover.Described power supply for example, lithium electricity battery, its specification can select common model of the prior art, be used for
Power supply to remaining part.
Turn next to Fig. 4, the control method of electric tool in the present invention is described in detail.
This method includes: perform boot action, waits activate switch, if not actuated (the most no), then repeats start dynamic
Make.
(it is i.e.) then to perform to start external loading, such as brushless lithium electricity hay mover, the most specifically after switch activated
Start motor so that motor drives blade rotation；The most described microcontroller by described power driver module control described outside
Section load (i.e. motor) is in the first rotating speed.From described above, described first rotating speed is less than the maximum (top) speed of motor.Can
See, be in less than startup in the case of maximum (top) speed owing to described motor can be controlled, it is thus possible to effectively guarantee start-up noises
Low, it is suitable for electric tool and breaks through the requirement of noise safety, and owing to motor rotary speed is low, therefore electric current is little, it is advantageously ensured that and reaches
Relevant criterion to EMC.
Then carry out operation, such as, for brushless lithium electricity hay mover, the most specifically carry out operation of mowing, described current sample
Module can persistently detect the electric current (i.e. load current) in described loop, and described microcontroller controls described according to described electric current
Power driver module changes the output to described external loading.
Concrete, such as brushless lithium electricity hay mover, it is based on described size of current and controls the rotating speed of described motor.With
As a example by arranging a threshold value, described microcontroller judges whether the electric current of detection reaches threshold value, if reaching described threshold value, described micro-
Controller controls motor by described power driver module and is in the second rotating speed immediately, to guarantee to realize high-quality operation
(operation of such as mowing)；If the most described threshold value, described microcontroller controls described motor by described power driver module
It is in the first rotating speed.
In one embodiment, described second rotating speed is the 90%-100% of maximum (top) speed, such as 95% etc..Described first
Rotating speed is the 50%-80% of maximum (top) speed, such as 60%, 70% etc..
It is understood that during in operation process, load is in change, stable in order to ensure operation process, if described
Motor is in the second rotating speed, when detecting that described electric current is not up to described threshold value (electric current diminishes), after time delay one time period
Described motor is made to be in the first rotating speed, for example, it is possible to the time of time delay 1-5 second, if electric current is still not up to described threshold value,
Described motor is then made to be in the first rotating speed.If electric current reaches described threshold value within the described time period, remain in that described motor
It is in the second rotating speed.Can so last up to required operation.
The control method of drive system in the present invention is elaborated above as a example by the control method of brushless lithium electricity hay mover
Application in practice, it is to be understood that described electric tool is not limited solely to brushless lithium electricity hay mover, and other relate to
The equipment that motor drives, such as thresing machine etc. can also be suitable for.
In sum, the present invention provides the control method of drive system and the control method of electric tool, described upper bridge
Arm, an external loading, described lower brachium pontis and described current sample module composition primary Ioops, obtained by described current sample module
Electric current in described loop, is then controlled described power driver module by described microcontroller according to described electric current and changes described
The output of external loading.Thus so that during start, motor is not necessarily in maximum (top) speed, thus reduces noise, it is suitable for electricity
Power driven tools breaks through the requirement of noise safety；And owing to motor rotary speed is low, therefore electric current is little, it is advantageously ensured that and reach the relevant of EMC
Standard；Additionally, change motor rotary speed according to actual current size, effectively have been directed to the load state run into during operation, energy
Enough realize self adaptation, thus reach energy-conservation effect.
Obviously, those skilled in the art can carry out various change and the modification essence without deviating from the present invention to the present invention
God and scope.So, if these amendments of the present invention and modification belong to the scope of the claims in the present invention and equivalent technologies thereof
Within, then the present invention is also intended to comprise these change and modification.
Claims (20)
1. a control method for drive system, described drive system includes: power driver module, current sample module and micro-
Controller；The upper brachium pontis of described power driver module connects the positive pole of a power supply, and the lower brachium pontis of described power driver module connects
The input of described current sample module, the outfan of described current sample module connects the negative pole of described power supply, described upper bridge
Arm, an external loading, described lower brachium pontis and described current sample module composition primary Ioops, described current sample module obtains described
Electric current in loop；Described microcontroller is connected with described current sample module and described power driver module；Described micro-control
Device processed controls described power driver module according to described electric current and changes the output to described external loading.
2. the control method of drive system as claimed in claim 1, it is characterised in that described external loading is a motor.
3. the control method of drive system as claimed in claim 2, it is characterised in that described electric current has a threshold value, described
Motor has at least the first rotating speed and the second rotating speed, and described second rotating speed is more than described first rotating speed；When described electric current reaches institute
When stating threshold value, described motor is in the second rotating speed；When described electric current is not up to described threshold value, described motor is in first turn
Speed.
4. the control method of drive system as claimed in claim 3, it is characterised in that described second rotating speed is maximum (top) speed
90%-100%.
5. the control method of drive system as claimed in claim 3, it is characterised in that described first rotating speed is maximum (top) speed
50%-80%.
6. the control method of drive system as claimed in claim 3, it is characterised in that if described motor is in the first rotating speed,
When described electric current reaches described threshold value, described motor is made to be in the second rotating speed immediately.
7. the control method of drive system as claimed in claim 3, it is characterised in that if described motor is in the second rotating speed,
When described electric current is not up to described threshold value, described motor after time delay one time period, is made to be in the first rotating speed.
8. the control method of drive system as claimed in claim 7, it is characterised in that the described time period is the 1-5 second.
9. the control method of drive system as claimed in claim 7, it is characterised in that if electric current reaches within the described time period
Described threshold value, remains in that described motor is in the second rotating speed.
10. the control method of drive system as claimed in claim 1, it is characterised in that described drive system also includes a DC/
DC controller, the power end of described microcontroller is connected with the positive pole of described power supply by described DC/DC controller.
The control method of 11. 1 kinds of electric tools, described electric tool includes: power supply, drive system and external loading, described electricity
Source powers to described external loading and drive system, and described drive system includes: power driver module, current sample module and
Microcontroller；The upper brachium pontis of described power driver module connects the positive pole of a power supply, and the lower brachium pontis of described power driver module is even
Connecing the input of described current sample module, the outfan of described current sample module connects the negative pole of described power supply, described on
Brachium pontis, an external loading, described lower brachium pontis and described current sample module composition primary Ioops, described current sample module obtains institute
State the electric current in loop；Described microcontroller is connected with described current sample module and described power driver module；
The control method of described electric tool includes:
Start external loading；
Described microcontroller controls described external loading by described power driver module and is in the first rotating speed；
Carrying out operation, described current sample module detects the electric current in described loop, and described microcontroller is according to described electric current control
Make described power driver module and change the output to described external loading.
The control method of 12. electric tools as claimed in claim 11, it is characterised in that described external loading is a motor.
The control method of 13. electric tools as claimed in claim 12, it is characterised in that described electric current has a threshold value, institute
Stating motor and have the most described first rotating speed and the second rotating speed, described second rotating speed is more than described first rotating speed, when described electric current
When reaching described threshold value, described microcontroller controls described motor by described power driver module and is in the second rotating speed, works as institute
Stating electric current when being not up to described threshold value, described microcontroller controls described motor by described power driver module and is in first turn
Speed.
The control method of 14. electric tools as claimed in claim 13, it is characterised in that described second rotating speed is maximum (top) speed
90%-100%.
The control method of 15. electric tools as claimed in claim 13, it is characterised in that described first rotating speed is maximum (top) speed
50%-80%.
The control method of 16. electric tools as claimed in claim 13, it is characterised in that if described motor is in first turn
Speed, when described electric current reaches described threshold value, makes described motor be in the second rotating speed immediately.
The control method of 17. electric tools as claimed in claim 13, it is characterised in that if described motor is in second turn
Speed, when described electric current is not up to described threshold value, makes described motor be in the first rotating speed after time delay one time period.
The control method of 18. electric tools as claimed in claim 17, it is characterised in that the described time period is the 1-5 second.
The control method of 19. electric tools as claimed in claim 17, it is characterised in that if electric current reaches within the described time period
To described threshold value, remain in that described motor is in the second rotating speed.
The control method of 20. electric tools as claimed in claim 11, it is characterised in that described electric tool is hay mover.
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| CN201610524454.8A CN106171247A (en) | 2016-06-29 | 2016-06-29 | The control method of drive system and the control method of electric tool |
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| CN201610524454.8A CN106171247A (en) | 2016-06-29 | 2016-06-29 | The control method of drive system and the control method of electric tool |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN108418478A (en) * | 2018-01-31 | 2018-08-17 | 东莞市力辉马达有限公司 | A kind of noise-reduction method of high-speed DC brushless electric machine |
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| CN109197141A (en) * | 2018-09-18 | 2019-01-15 | 赣州双木科技有限公司 | A kind of tea place harvesting robot universal driving system and control method |
| CN110006467A (en) * | 2019-04-21 | 2019-07-12 | 杭州晶一智能科技有限公司 | Careless condition recognition methods of the grass-removing robot based on current of electric |
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| CN108925210A (en) * | 2018-08-31 | 2018-12-04 | 浙江天泰机械有限公司 | Lawn machine control method and device |
| CN109197141A (en) * | 2018-09-18 | 2019-01-15 | 赣州双木科技有限公司 | A kind of tea place harvesting robot universal driving system and control method |
| CN110006467A (en) * | 2019-04-21 | 2019-07-12 | 杭州晶一智能科技有限公司 | Careless condition recognition methods of the grass-removing robot based on current of electric |
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Application publication date: 20161207 |