CN105577037B - The starting control method and fan of fan - Google Patents
The starting control method and fan of fan Download PDFInfo
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- CN105577037B CN105577037B CN201510631528.3A CN201510631528A CN105577037B CN 105577037 B CN105577037 B CN 105577037B CN 201510631528 A CN201510631528 A CN 201510631528A CN 105577037 B CN105577037 B CN 105577037B
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Abstract
This case discloses the starting control method and fan of a kind of fan, and the starting control method of fan is suitable for the control in a starting fan stage, and the starting fan stage includes a first time section and one second time interval.Start control method the following steps are included: providing one first driving signal persistently in first time section with driving fan；And provide one second driving signal persistently in the second time interval with driving fan.Wherein, the signal value (driving energy) of the first driving signal is the signal value being gradually decrease until equal to the second driving signal in first time section, and the initial value of the signal value of the first driving signal is greater than the signal value of the second driving signal.The present invention utilizes the first driving signal for gradually decreasing energy, and the second driving signal of collocation is opening circuit control stage control rotation speed of the fan, the phenomenon that reducing rotation speed of the fan overshoot, starting noise is thus effectively reduced, more adjustable starting ability, it is not necessary to continue the higher energy of output, effectively saving electric energy.
Description
Technical field
Starting control method and fan of the present invention about a kind of fan, especially in regard to a kind of three-phase fan in startup stage
Starting control method and fan.
Background technique
Laptop can switch between suspend mode and normal mode often in response to energy saving requirement, system,
Therefore fan also can continually correspond to different working modes and shut down or restart operating.However, fan is from shutting down
State restart operating, can often generate apparent starting noise, the main cause that starting noise generates is: fan is restarting
It is to carry out force start in the driving signal for opening one fixed high-energy of circuit (Open Loop) control stage offer when operating
Fan carries out the adjustment of driving signal without the feedback signal using any sensor, however the energy size of driving signal is then
It will affect starting noise.
Fig. 1 is please referred to, Fig. 1 is the schematic diagram of the driving signal of existing fan initial phase, noise and revolving speed, wherein fan
Continue to increase revolving speed according to driving signal S, noise is also therefore lasting to be increased, when driving signal S driving fan continues for some time
Section Topenloop, it is, waiting the impeller of fans smoothly with turn, and after the revolving speed one threshold revolving speed of arrival of fan, fan is meeting
Switch to loop circuit (Close Loop) control stage, it is, at this stage when, can utilize a detection circuit feedback signal
Carry out the signal value adjustment (i.e. duty cycle (Duty Cycle) can from A be down to A ') of driving signal, and fan and with a target
Rotation speed operation, and often can be too big in the energy of the driving signal of initial phase because of fan, the rotating speed of target for forming fan is far low
Lead to the phenomenon that rotation speed of the fan overshoots (overshoot) in start-up course in the threshold revolving speed for opening the circuit control stage, thus
Generate apparent starting noise.
Therefore, how the starting control method and fan of a kind of fan can effectively reduce starting noise are provided, it has also become
One of important topic.
Summary of the invention
In view of the above subject, it is an object of the present invention to provide a kind of starting controls of fan that can effectively reduce starting noise
Method processed and fan, to solve the problems, such as that prevailing custom initial phase generates obvious noise.
The starting control method of a kind of fan according to the present invention, suitable for the control in a starting fan stage, starting fan
Stage includes a first time section and one second time interval.Start control method the following steps are included: in first time area
Between provide one first driving signal persistently with driving fan；And the second time interval persistently provide one second driving signal with
Driving fan.Wherein, the signal value of the first driving signal is to be gradually decrease until equal to the second driving letter in first time section
Number signal value, and the initial value of the signal value of the first driving signal be greater than the second driving signal signal value.
In one embodiment, the signal value of the second driving signal is a fixed value.
In one embodiment, fan includes an impeller, a motor and a control circuit, and motor is separately connected impeller and drives
Impeller operation and electric connection control circuit, control circuit include a control unit and a detection unit, and detection unit detects horse
The current phase or counter electromotive force reached, and a feedback signal is exported to control unit.Start control method further include: reaching wind
After fanning startup stage, based on the feedback signal, a third driving signal is provided with driving fan.
In one embodiment, the first driving signal, the second driving signal and third driving signal are provided by control unit.
In one embodiment, the first driving signal, the second driving signal and third driving signal be pulse-width modulation signal or
D. c. voltage signal.
In one embodiment, the signal value of the first driving signal is linear reduction or non-linear reduction.
In one embodiment, the summation of first time section and the second time interval is certain value.
A kind of fan according to the present invention includes: an impeller, a motor and a control circuit；Motor connects impeller, and drives
Dynamic impeller operation and motor are electrically connected control circuit.Control circuit includes a control unit, and control unit is in starting fan
Stage provides one first driving signal and one second driving signal, with driving fan；Wherein, the starting fan stage includes one first
Time interval and one second time interval, control unit provide the first driving signal persistently in first time section to drive wind
Fan, and the signal value of the first driving signal is to gradually decrease in first time section；Then until the signal of the first driving signal
Value is equal to the signal value of the second driving signal, and control unit then provides the second driving signal persistently in the second time interval to drive
Fan, and the initial value of the signal value of the first driving signal is greater than the signal value of the second driving signal.
In one embodiment, the signal value of the second driving signal is a fixed value.
In one embodiment, control circuit further includes a detection unit, and detection unit detects the current phase or anti-of motor
Electromotive force, and export a feedback signal to control unit, and control unit is after reaching the starting fan stage, according to feedback letter
Number, a third driving signal is provided with driving fan.
In conclusion the starting control method and fan of fan of the present invention, at the starting fan stage, using gradually decreasing
First driving signal of energy, and the second driving signal of collocation are opening circuit control stage control rotation speed of the fan, reduce fan and turn
The phenomenon that speed overshoot, thus starting noise is effectively reduced, more adjustable starting ability is not necessary to continue the higher energy of output, has
Effect saves electric energy.
Detailed description of the invention
Fig. 1 is the schematic diagram of duty cycle of existing fan initial phase, noise and revolving speed.
Fig. 2 is the composition block schematic diagram of the fan of present pre-ferred embodiments.
Fig. 3 A is the schematic diagram of duty cycles of present pre-ferred embodiments, noise and revolving speed.
Fig. 3 B to Fig. 3 E is that the first driving signal of Fig. 3 A has the schematic diagram of different reduction modes.
Fig. 4 is the step flow chart of the starting control method of present pre-ferred embodiments.
Fig. 5 is the control flow chart of the starting control method of present pre-ferred embodiments.
Description of symbols:
20: fan
21: impeller
22: motor
23: control circuit
231: control unit
232: detection unit
S: driving signal
S1: the first driving signal
S1A: the curve of linear formula reduction mode
S1B: the curve of curvilinear style reduction mode
S1C: the curve of staged reduction mode
S1D: the curve of the reduction mode of binding curve formula and linear formula
S2: the second driving signal
S3, S3A, S3B: third driving signal
S10, S20, S100, S200, S300, S400, S500: step
T: loop time section is opened
T1: first time section
T2: the second time interval
Topenloop: time interval
Specific embodiment
Hereinafter with reference to relevant drawings, illustrate the starting fan control method and fan according to present pre-ferred embodiments,
In identical element will be illustrated with identical reference marks.
Referring to figure 2., Fig. 3 A to Fig. 3 E, Fig. 2 are the composition block schematic diagram of the fan of present pre-ferred embodiments.Fig. 3 A
For the schematic diagram of the duty cycle of present pre-ferred embodiments, noise and revolving speed.The first driving letter that Fig. 3 B to Fig. 3 E is Fig. 3 A
Number S1 has the schematic diagram of different reduction modes.
Referring to figure 2., fan 20 includes an impeller 21, a motor 22 and a control circuit 23；Wherein motor 22 is three-phase
Motor, and it is separately connected impeller 21 and motor electric connection control circuit 23, and the driving signal exported according to control circuit 23
Impeller 21 is driven to operate.In addition, control circuit 23 includes a control unit 231 and a detection unit 232.Control unit 231 mentions
For driving signal to drive impeller 21.Detection unit 232 is to detect the current phase or counter electromotive force of motor 22, and it is anti-to transmit one
Feedback signal is to control unit 231, to allow control unit 231 when loop circuit (Close Loop) controls the stage, according to feedback letter
Number carry out driving signal adjustment.In addition, control unit 231 can be common with detection unit 232 in other embodiments of the invention
Constitute identity element.
The present invention is opening circuit (Open Loop) control stage to reduce starting noise and take into account starting ability
Start-up course in using changeable output control.Referring to figure 2. and shown in Fig. 3 A, when impeller 21 is from the shape to shut down
State re-starts starting operating, and wherein control unit 231 can persistently mention in the first time section T1 for holding the circuit control stage
It is then controlled after impeller 21 smoothly drives operating for one first driving signal S1 with the operating of 22 impeller 21 of drive motor
Unit 231 can persistently provide one second driving signal S2 in the second time interval T2 for holding the circuit control stage to drive impeller
21.Wherein, the signal value of the first driving signal S1 is compared with high power output and to gradually decrease output energy in first time section T1
It measures (signal value is down to B ' by B), and the signal value of the second driving signal S2 is then fixed output energy value (B '), moreover, the
Signal value B ' of the initial value B of the signal value of one driving signal S1 greater than the second driving signal S2, and the first driving signal S1
The initial value B ' of signal value of the end value B ' of signal value equal to the second driving signal S2；Wherein, the letter of the first driving signal S1
The initial value B of number value is the minimum bootable duty cycle (Duty Cycle) of fan 20, the signal value of the second driving signal S2
Initial value B ' be the duty cycle that can operate of 20 minimum of fan.In this present embodiment, the driving of the first driving signal S1 and second
Signal S2 can be pulse-width modulation signal or d. c. voltage signal, and the signal value and the second driving signal of the first driving signal S1
The signal value of S2 can default in control unit 231.
In addition, the summation of above-mentioned first time section T1 and the second time interval T2 are a definite values, that is, open circuit
The control stage (i.e. starting fan stage) opens loop time section T, it is, in first time section T1 and the second time zone
Between T2 be all opening circuit control the stage, and open circuit control the stage open loop time section T after, then enter loop circuit
The control stage.Therefore, as shown in Figure 3A, when 21 revolving speed of impeller is gradually increasing, when the time reaching out loop time section T,
Corresponding noise is not significantly increased, and since the signal value of the first driving signal S1 of the invention is to be gradually decrease to second
The signal value (signal value is down to B ' by B) of driving signal S2, therefore, the phenomenon that rotation speed of the fan overshoots (overshoot), is also therewith
It disappears.Can be variant because of different types of fan in addition, holding loop time section T, therefore, designer must be according to inhomogeneity
Type fan, adjustment first time section T1, the second time interval T2 and first time section T1's and the second time interval T2 is total
(that opens the circuit control stage opens loop time section T), to make 20 steady running of fan in the starting fan stage, and effectively
Reduce the starting noise of fan 20.
And after 20 steady running of fan, stage (i.e. normal operation phase) is controlled into loop circuit, at this time control circuit
23 control unit 231 starts the feedback signal according to detection unit 232, provides a third driving signal S3 with drive motor 22
Impeller 21 operates.In this present embodiment, the signal value of third driving signal S3 can be greater than the signal of the second driving signal S2
It is worth (i.e. the third driving signal S3A of Fig. 3 A) or signal value (the i.e. third driving signal of Fig. 3 A equal to the second driving signal S2
S3 the signal value (i.e. the third driving signal S3B of Fig. 3 A)) or less than the second driving signal S2 does not make other limits in the present invention
System, designer can be adjusted according to actual demand.In other embodiments, it (is opened back after the second time interval T2
The road control stage terminates), the stage is controlled into loop circuit, control unit 231 can provide and the second driving signal S2 same size
Third driving signal S3 continue 22 impeller 21 of drive motor and operate a bit of time, later again according to detection unit 232
The feedback signal of output carries out revolving speed adjustment.In other embodiments, the signal value of the second driving signal S2 (opens circuit control rank
Section) can slightly higher or slightly less than third driving signal S3 signal value (loop circuit controls the stage), changed with revolving speed by a small margin,
When switching control mode, switching noise is reduced.
In this present embodiment, the signal value of the first driving signal S1 is to gradually decrease, and the mode gradually decreased can be taken
Linear reduction mode or non-linear reduction mode, with no restriction in the present invention, designer can be adjusted according to actual needs.
The reduction mode of above-mentioned first driving signal, can refer to Fig. 3 B to Fig. 3 E, can be the curve S1A (figure of linear formula reduction mode
Shown in 3B), the curve S1B (shown in Fig. 3 C) of curvilinear style reduction mode, staged reduction mode curve S1C (shown in Fig. 3 D),
Or the curve S1D (shown in Fig. 3 E), the curve S1A of above-mentioned various reduction modes of the reduction mode of binding curve formula and linear formula
~S1D may conform to the line segment of parabola, hyperbola or arbitrary curve form, so that the signal value of the first driving signal S1 is
It is gradually decreased in one time interval T1.
Referring to figure 4., Fig. 4 is the step flow chart of the starting control method of present pre-ferred embodiments.The present invention is applicable in
In the control in starting fan stage, the starting fan stage includes a first time section and one second time interval, starting control
Method at least includes the following steps: providing one first driving signal persistently in first time section with driving fan (step S10)；
And provide one second driving signal persistently in the second time interval with driving fan；Wherein, the signal value of the first driving signal
Be the signal value being gradually decrease until equal to the second driving signal in first time section, the signal value of the first driving signal just
Initial value is greater than the signal value (step S20) of the second driving signal.
In step slo, the signal value of the first driving signal S1 is to gradually decrease in first time section T1, is gradually dropped
Low mode can take linear reduction mode or non-linear reduction mode, and with no restriction in the present invention, designer can be according to reality
Demand is adjusted.
In addition, the signal value of the second driving signal S2 is a fixed value, in other realities in the step S20 of the present embodiment
It applies in example, the signal value of the second driving signal S2 can be gradually decreased or is gradually increased, and with no restriction in the present invention, designer can be according to
It is adjusted according to actual demand.In addition, the length of the second time interval T2 can be adjusted according to the time of fan steady running,
With no restriction in the present invention, the time that designer can reach steady running according to fan is adjusted.
In this present embodiment, the first driving signal S1 and the second driving signal S2 can be pulse-width modulation signal or direct current
Signal is pressed, with no restriction in the present invention, designer can be adjusted according to actual demand.In addition, the signal of the first driving signal S1
The initial value B of value is the minimum bootable duty cycle (Duty Cycle) of fan 20, that is, the first driving signal S1 is provided
The torque of fan has to be larger than the maximum static friction force of fan 20, and due to the difference of fan structure, the maximum of fan 20 is quiet
Frictional force can difference.In addition, the initial value B ' of the signal value of the second driving signal S2 is the work that 20 minimum of fan can operate
Make the period, that is, the torque of the second driving signal S2 offer fan must then be greater than kinetic force of friction when fan 20 operates, therefore
First driving signal S1 and the second driving signal S2 must be adjusted according to different fan structures, motor, and the present invention is not
It is restricted.
Referring to figure 5., Fig. 5 is the control flow chart of the starting control method of present pre-ferred embodiments.The present invention is applicable in
In the control in starting fan stage, the control flow for starting control method includes at least the following steps: providing the first driving signal
With driving fan (step S100)；Judge whether the signal value of the first driving signal is equal to the signal value (step of the second driving signal
Rapid S200).If it is not, the signal value of the first driving signal is then reduced (step S300)；If so, provide the second driving signal with
Driving fan (step S400)；Next, it is determined that whether driving time reaches out loop time section (step S500).
In the step s 100, the first driving signal is provided with driving fan；Later after predetermined time section, that is, execute step
Rapid S200, it is, just will do it after predetermined time section and judge whether the signal value of the first driving signal is equal to the second drive
The signal value of dynamic signal.
In step s 200, it if the signal value of the first driving signal is not equal to the signal value of the second driving signal, executes
Step S300 it is, the signal value of the first driving signal is reduced, and after the signal value for reducing the first driving signal, connects
Execution step S100, with reduce after the first driving signal driving fan.In addition, in step s 200, if the first driving letter
Number signal value be equal to the second driving signal signal value, then follow the steps S400, it is, provide the second driving signal to drive
Dynamic fan, finally executes step S500.
In step S500, it must judge whether driving time reaches out loop time section T.If driving time reaches open back
Road time interval T then completes fan and opens the circuit control stage, and the subsequent loop circuit that then enters controls the stage；If driving time is not yet
Reach out loop time section T, thens follow the steps S400.
In this present embodiment, the signal value of the first driving signal S1 can be gradually decreased in first time section T1, and first
Time needed for the signal value of driving signal S1 drops to the signal value of the second driving signal S2, as aforementioned first time section
T1.Further, since the summation of aforementioned first time section T1 and the second time interval T2 are a definite values, it is, opening circuit
Time interval T (summation of first time section T1 and the second time interval T2) is a definite value.Due to opening loop time section T
It is a definite value, therefore, the second time interval T2 is then to continue after first time section T1 with the second driving signal
S2 driving fan, the time interval until reaching out loop time section T.
In conclusion the starting control method and fan of fan of the present invention, at the starting fan stage, using gradually decreasing
First driving signal of energy, and the second driving signal of collocation are opening circuit control stage control rotation speed of the fan, reduce fan and turn
The phenomenon that speed overshoot, thus starting noise is effectively reduced, more adjustable starting ability is not necessary to continue the higher energy of output, has
Effect saves electric energy.
The foregoing is merely illustratives, rather than are restricted person.It is any without departing from spirit and scope of the invention, and to it
The equivalent modifications or change of progress, are intended to be limited solely by the attached claims.
Claims (8)
1. a kind of starting control method of fan, suitable for the control in a starting fan stage, which opens for one
Circuit control the stage, the starting fan stage successively by one first time section and one second time interval constitute, feature exists
In, the starting control method the following steps are included:
There is provided one first driving signal persistently in the first time section for opening the circuit control stage to drive the fan；And
There is provided one second driving signal persistently in second time interval for opening the circuit control stage to drive the fan；
Wherein, which is directly entered the first time section in starting fan stage from halted state, the first driving letter
Number signal value in the first time section be the signal value being gradually decrease until equal to second driving signal, first driving
The initial value of the signal value of signal is greater than the signal value of second driving signal, and the signal value of second driving signal is one fixed
Value, and first driving signal, second driving signal are pulse-width modulation signal or d. c. voltage signal.
2. starting control method as described in claim 1, which is characterized in that the fan includes an impeller, a motor and a control
Circuit processed, the motor connect the impeller and the impeller operation and the motor are driven to be electrically connected the control circuit, the control circuit
Including a control unit and a detection unit, which detects the current phase or counter electromotive force of the motor, and exports one
Feedback signal gives the control unit, the starting control method further include:
After reaching the starting fan stage, according to the feedback signal, a third driving signal is provided to drive the fan.
3. starting control method as claimed in claim 2, which is characterized in that first driving signal, second driving signal
And the third driving signal is provided by the control unit.
4. as claimed in claim 2 starting control method, which is characterized in that the third driving signal be pulse-width modulation signal,
Or d. c. voltage signal.
5. starting control method as described in claim 1, which is characterized in that the signal value of first driving signal is linear drop
Low or non-linear reduction.
6. starting control method as described in claim 1, which is characterized in that first time section and second time interval
Summation be certain value.
7. a kind of fan characterized by comprising
One impeller；
One motor connects the impeller, and drives the impeller operation；And
One control circuit is electrically connected the motor, comprising:
One control unit provides one first driving signal and one second driving signal in a starting fan stage, to drive the wind
Fan；
Wherein, which opens circuit for one and controls the stage, and the starting fan stage is successively by a first time section
And one second time interval constitute, the control unit this open circuit control the stage first time section persistently provide this first
Driving signal is to drive the fan, and the fan is directly entered the first time area in starting fan stage from halted state
Between, the signal value of first driving signal is to gradually decrease in first time section, until the signal value of first driving signal
Equal to the signal value of second driving signal, which is then persistently mentioned in second time interval for opening the circuit control stage
For second driving signal to drive the fan, and the initial value of the signal value of first driving signal is greater than the second driving letter
Number signal value, the signal value of second driving signal is a fixed value, and first driving signal, second driving signal are
Pulse-width modulation signal or d. c. voltage signal.
8. fan as claimed in claim 7, which is characterized in that the control circuit further include:
One detection unit, detects the current phase or counter electromotive force of the motor, and exports a feedback signal to the control unit, and
The control unit, according to the feedback signal, provides a third driving signal after reaching the starting fan stage to drive the wind
Fan.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201462073477P | 2014-10-31 | 2014-10-31 | |
| US62/073,477 | 2014-10-31 |
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| CN105577037A CN105577037A (en) | 2016-05-11 |
| CN105577037B true CN105577037B (en) | 2018-12-04 |
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| CN201510631528.3A Active CN105577037B (en) | 2014-10-31 | 2015-09-29 | The starting control method and fan of fan |
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| CN (1) | CN105577037B (en) |
| TW (1) | TWI576693B (en) |
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| JP6624735B2 (en) | 2016-07-26 | 2019-12-25 | 株式会社重松製作所 | Breathing device with electric fan linked to breathing |
| CN106227313A (en) * | 2016-08-23 | 2016-12-14 | 浙江大华技术股份有限公司 | The duty of a kind of DC radiation fan determines method and device |
| CN106455416A (en) * | 2016-08-29 | 2017-02-22 | 安徽皖通邮电股份有限公司 | Device for controlling electronic device fun starting noise |
| TWI630327B (en) * | 2017-04-28 | 2018-07-21 | 茂達電子股份有限公司 | Heat dissipation system and stable method for heat dissipation system |
| CN107972478A (en) * | 2017-12-08 | 2018-05-01 | 东风柳州汽车有限公司 | Electric automobile control method for fan |
| CN108105138B (en) * | 2017-12-18 | 2019-11-05 | 青岛海信激光显示股份有限公司 | A kind of target method for starting fan |
| CN111219351B (en) * | 2020-01-17 | 2021-01-12 | 珠海格力电器股份有限公司 | Fan rotating speed control method and device, air conditioner external unit device and air conditioning equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI576693B (en) | 2017-04-01 |
| CN105577037A (en) | 2016-05-11 |
| TW201616279A (en) | 2016-05-01 |
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