CN102116304A - Fan system and brake circuit thereof - Google Patents
Fan system and brake circuit thereof Download PDFInfo
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- CN102116304A CN102116304A CN2010100001171A CN201010000117A CN102116304A CN 102116304 A CN102116304 A CN 102116304A CN 2010100001171 A CN2010100001171 A CN 2010100001171A CN 201010000117 A CN201010000117 A CN 201010000117A CN 102116304 A CN102116304 A CN 102116304A
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- motor
- fan system
- control unit
- drive circuit
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Abstract
The invention discloses a fan system and a brake circuit thereof, which comprises a motor, a motor drive circuit, and a control unit. The motor drive circuit is electrically connected with the motor; the control unit is electrically connected with the motor drive circuit; when an input voltage is supplied to electrify the fan system, the control unit generates a forward rotation control signal to control the motor to rotate along a preset direction; when power supply of the input voltage to the fan system is interrupted, the control unit generates a reverse rotation control signal to control the motor to rotate along a direction opposite to the preset direction so as to brake and stop the motor instantly.
Description
Technical field
The invention relates to a kind of fan system and brake circuit thereof, refer to that especially a kind of control unit that utilizes sends a reverse rotation control signal, to control fan system and the brake circuit thereof that this fan system stops operating.
Background technique
In recent years, (Micro-Controller Unit MCU) in conjunction with the electronic power switch drive circuit, carries out the design of electronic product, has been present industry technology commonly used to utilize digital microcontroller.Yet when this electronic product of operation, this digital microcontroller and this electronic power switch can cause this electronic product to produce a large amount of heats because operating in high frequency; Therefore, the radiating requirements of this electronic product will become considerable design problem.
At present; more common radiating mode carries out the wind dispelling heat radiation of this electronic product with the running of fan system; yet based on considering of fan control and user's safety operation; this fan system usually can be in conjunction with a stall circuit; so that when power cut-off; stop the running of this fan system, with the accuracy of guaranteeing fan control and user's handling safety.
As shown in Figure 1, it discloses a kind of existing fan system and brake circuit thereof, comprises a bridge driver 91, a control unit 92, a storage capacitor 93, one an instant stop element 94 and a motor coil 95.Wherein a voltage source V CC is connected to this bridge driver 91, control unit 92, storage capacitor 93 and this instant stop element 94, to provide above-mentioned these members required power supply.This bridge driver 91 has on two bridge electronic switch M91 and M94 and two times bridge electronic switch M92 and M93; This instant stop element 94 has two electronic switch M95 and M96, connects and control the two times bridge electronic switch M92 and the M93 of this bridge driver 91 respectively; This control unit 92 has two electronic switch M95 and M96 and other two electronic switch M97 and the M98 that four control output ends are connected to this instant stop element 94; One end of this motor coil 95 is connected the last bridge electronic switch M91 and the interconnective joint of following bridge electronic switch M93 of this bridge driver 91; And the other end is connected on another of this bridge driver 91 bridge electronic switch M94 and another interconnective joint of bridge electronic switch M92 down.
As this voltage source V CC during to this fan system normal power supply, this control unit 92 produces one group of control signal from its control output end, control this bridge driver 91 and this instant stop element 94 actions, make this bridge driver 91 two on bridge electronic switch M91 and M94 and two times bridge electronic switch M92 and M93 form mutual conducting, form alternating current with the electric current of controlling on this motor coil 95; For example: this electronic switch M91 and M92 form conducting, and are somebody's turn to do two electronic switch M93 and M94 formation open circuit in addition, so that this electric current forward flows in this motor coil; Otherwise, then control this motor coil of this reverse direction current flow.In addition, this storage capacitor 93 continues to charge until predetermined electric weight.
When this voltage source V CC interrupted, this control unit 92 no longer provided control signal to give this bridge driver 91 and this instant stop element 94 actions, makes two electronic switch M95 of this instant stop element 94 and M96 form open circuit; Simultaneously, this storage capacitor discharge, because two times bridge electronic switch M92 of this bridge driver 91 and each conducting control end (as the gate terminal of Fig. 1) of M93 are connected to this storage capacitor 93, and then make two times bridge electronic switch M92 of this bridge driver 91 and M93 be able to conducting in response to the power supply of this storage capacitor 93, impel two terminal potentials of this motor coil 95 identical, so that this fan system shuts down immediately.
Yet generally speaking, above-mentioned having now has following shortcoming, and for example: this fan system need be by the control of this instant stop element 94, with the operation that shuts down immediately when outage.Relative, this fan system will certainly be because of the setting of this instant stop element 94, circuit connects complexity, raising is controlled complexity and increased circuit cost is set and increase.For these reasons, be necessary further to improve above-mentioned existing fan system and brake circuit thereof.
Summary of the invention
Shortcoming at above-mentioned existing fan system and brake circuit thereof during the object of the invention improves, operation by a reverse rotation control signal of a control unit, when making an input voltage interruption of power supply of this fan system, be seasonal motor brake, connect complexity to simplify this control that stops control circuit and circuit.
The present invention's time purpose provides a kind of fan system and brake circuit thereof, carries out the brake operation of a motor by a control unit, to reduce this fan system circuit cost is set.
The fan system according to the present invention comprises: a motor, a motor drive circuit and a control unit.This motor drive circuit is electrically connected this motor; This control unit is electrically connected this motor drive circuit; When an input voltage supplied power to this fan system, this control unit produced a forward rotation control signal, controlled this motor and rotated along a predetermined direction; When this input voltage interruption of power supply during to this fan system, this control unit produces a reverse rotation control signal, controls this motor along rotating in contrast to this predetermined direction.
According to the present invention fan system stop control circuit, comprise a control unit, when an input voltage supplied power to this fan system, this control unit produced a forward rotation control signal, controlled this motor and rotated along a predetermined direction; When this input voltage interruption of power supply during to this fan system, this control unit produces a reverse rotation control signal, controls this motor along rotating in contrast to this predetermined direction.
Beneficial effect of the present invention is: compared to the existing fan system and the circuit of braking thereof, the present invention should have instant stop element now because of need not to be provided with, and then had the effect that reduces circuit cost and circuit connection complexity.
Description of drawings
Fig. 1: the circuit connection diagram of existing fan system and brake circuit thereof.
Fig. 2: the circuit diagram of the fan system of preferred embodiment of the present invention and brake circuit thereof.
Fig. 3: the fan system of preferred embodiment of the present invention and brake circuit application thereof are in the circuit diagram of three-phase motor system.
Fig. 4: be the coil current sequential schematic representation of motor among Fig. 3.
Fig. 5: the fan system of preferred embodiment of the present invention and brake circuit application thereof are in the circuit diagram of single-phase motor system.
Fig. 6: be the coil current sequential schematic representation of motor among Fig. 5.
1 motor drive circuit, 11 electronic switch, 111 controlled ends
12 electronic switch, 121 controlled end 13 electronic switch
131 controlled end 14 electronic switch 141 controlled ends
15 electronic switch, 151 controlled end 16 electronic switch
161 controlled end 1 ' motor drive circuit 11 ' electronic switch
111 ' controlled end 12 ' electronic switch 121 ' controlled end
13 ' electronic switch, 131 ' controlled end 14 ' electronic switch
141 ' controlled end 2 control units 21 control output end groups
213 control output ends, 212 control output ends, 211 control output ends
216 control output ends, 215 control output ends, 214 control output ends
212 ' control output end, 2 ' control unit, 211 ' control output end
214 ' control output end, 213 ' control output end, 3 motors
31 first coils, 311 first output terminals, 312 first input ends
32 second coils, 321 second output terminals, 322 second input ends
33 tertiary coils 331 the 3rd output terminal 332 the 3rd input end
34 coils, 341 output terminals, 342 input ends
4 energy-storage units, 5 voltage conversion unit A first are connected in series a little
A ' first B second B ' second that is connected in series that is connected in series is connected in series a little
C the 3rd a M1 transistor switch M2 transistor switch that is connected in series
M1 ' transistor switch M2 ' transistor switch M3 transistor switch
91 bridge drivers, 92 control units, 93 storage capacitors
94 instant halt circuit 95 motor coils
M91 electronic switch M92 electronic switch M93 electronic switch
M94 electronic switch M95 electronic switch M96 electronic switch
M97 electronic switch M98 electronic switch
Embodiment
For above-mentioned and other purpose of the present invention, feature and advantage can be become apparent, preferred embodiment of the present invention cited below particularly, and cooperate scheme attachedly, be described in detail below:
Please refer to shown in Figure 2ly, it discloses the fan system and the brake circuit thereof of preferred embodiment of the present invention, and wherein this fan system comprises a motor drive circuit 1, a control unit 2, a motor 3 and an energy-storage units 4.Wherein an input voltage VCC is electrically connected to this motor drive circuit 1, control unit 2 and energy-storage units 4 by a diode D, in other words, this motor drive circuit 1, control unit 2 and energy-storage units 4 are electrically connected to the negative electrode of this diode D jointly, so that this input voltage VCC can provide above-mentioned these members required power supply by this diode D.
This motor drive circuit 1 is made of several electronic switch, this motor drive circuit 1 is electrically connected with this motor 3 to form a full-bridge type drive circuit or half bridge drive circuit, the electronic switch quantity of this motor drive circuit 1 is according to the number of phases decision of this motor 3, and respectively this electronic switch has a controlled end, to receive conducting or to close switching signal.
This control unit 2 can be selected from a microcontroller or a motor driven IC, this control unit 2 comprises several control output ends, a control output end group 21 of this control unit 2 is formed in these several control output ends, several control output ends of this control output end group 21 are electrically connected several electronic switch of this motor drive circuit 1 respectively, so that these control unit 2 exportable one group of forward rotation control signal or one group of reverse rotation control signals, control the handover operation of several electronic switch of this motor drive circuit 1, to carry out the clockwise and anticlockwise control of this motor 3.
Moreover this control unit 2 comprises a voltage detecting end 22 in addition, and this voltage detecting end 22 is electrically connected this input voltage VCC, in order to detect this input voltage VCC whether unusually.Again, for the voltage detecting end 22 that makes this control unit 2 suitably receives a voltage signal, preferably, the voltage detecting end 22 of this control unit 2 can be electrically connected to the anode of this diode D by a voltage conversion unit 5, and receives this input voltage VCC.Wherein this voltage conversion unit 5 can be selected a bleeder circuit, this input voltage VCC can (for example be converted to 12V input voltage VCC dividing potential drop the voltage signal of 3V by this voltage signal that this bleeder circuit output is suitable for these control unit 2 voltage ratings, and the voltage signal of this 3V imported this control unit 2), directly impact this control unit 2 to avoid excessive voltage.Moreover, because this voltage conversion unit 5 is electrically connected the anode of this diode D, and this energy-storage units 4 is electrically connected the negative electrode of this diode D, therefore this voltage conversion unit 5 can stop the discharge voltage of this energy-storage units 4 by this diode D, to avoid influencing the conversion accuracy of this voltage conversion unit 5.
Please refer to shown in Figure 3ly, its motor 3 that discloses preferred embodiment of the present invention is a three-phase system motor, for example can be selected from a three-phase brushless d.c. motor.This motor drive circuit 1 cooperates the number of phases of this motor 3 that three arm switch groups are set, and wherein the first arm switching group is in series by two electronic switch 11 and 14, and has one first A that is connected in series; The second arm switch group is in series by two electronic switch 13 and 16, and has one second B that is connected in series; And the 3rd arm switch group is in series by other two electronic switch 15 and 12, and has one the 3rd C that is connected in series.Moreover, six electronic switch 11 to 16 of this motor drive circuit 1 are elected the transistor switch respectively as, and these six electronic switch 11 to 16 have a controlled end 111 to 161 respectively, respectively this controlled end 111 to 161 can receive this rotation control signal respectively, and this electronic switch 11 to 16 forms conductings or closes to control respectively.In addition, an indivedual in addition transistor switch M1, M2 and the M3 of connecting of the electronic switch 11,13 of bridge and each controlled end 111,131 of 15 and 151 on this motor drive circuit 1, by the operation of this transistor switch M1, M2 and M3, with the electronic switch 11,13 of controlling bridge on this motor drive circuit 1 and 15 action.
Referring again to shown in Figure 3, the control output end group 21 of this control unit 2 cooperates the number of phases of this motor 3, six control output ends 211 to 216 are set, these six control output ends 211 to 216 connect this six electronic switch 11 to 16 respectively, this control unit 2 can produce this rotation control signal, and should rotate control signal by these these six electronic switch 11 to 16 of six control output ends, 211 to 216 feed-ins, carry out the conducting or the closing control of these six electronic switch 11 to 16.
Referring again to shown in Figure 3, the motor 3 of disclosed three-phase has three coils 31,32 and 33, and this first coil 31 has one first output terminal 311 and a first input end 312; This second coil 32 has one second output terminal 321 and one second input end 322; This tertiary coil 33 has one the 3rd output terminal 331 and one the 3rd input end 332.These three coils 31,32 and 33 output terminal 311,321 and 331 connect jointly, make this motor 3 form Y types and connect; And the first input end 312 of this first coil 31 connects the 3rd of the 3rd an arm switch group C that is connected in series, second input end 322 of this second coil 32 connects second of these second arm switch groups B that is connected in series, and the 3rd input end 332 of this tertiary coil 33 connects first of these the first arm switching group A that is connected in series.
When the input voltage VCC of fan system of the present invention powers normal, and this control unit 2 is by this voltage detecting end 22, when detecting the normal voltage signal (for example 3V) that this voltage conversion unit 5 changed, this control unit 2 is sent this forward rotation control signal, and input to this six electronic switch 11 to 16, by the handover operation of these six electronic switch 11 to 16, control with the current direction on the coil 31,32 and 33 that carries out this motor 3.By this, by the control of the forward rotation control signal of this control unit 2, so that this motor 3 rotates (for example rotating in a clockwise direction) towards a predetermined direction.Simultaneously, this input voltage VCC is to these energy-storage units 4 stable power-supplyings, and the predetermined electric weight of accumulation to.
Yet, when the input voltage VCC of fan system of the present invention descends abnormal electrical power supply because of voltage, this control unit 2 is by this voltage detecting end 22, detect this voltage conversion unit 5 and change out an abnormal voltage signal, and this abnormal voltage signal is lower than default one unusual when judging magnitude of voltage (for example 2.4V) of this control unit 2, because this energy-storage units 4 is electrically connected this control unit 2, at this moment, these energy-storage units 4 discharges, continue running for this control unit 2, make this control unit 2 send this reverse rotation control signal, and input to this six electronic switch 11 to 16, to control this motor 3 sense of rotation at this moment along rotate (for example counterclockwise to rotate) in contrast to this predetermined direction, so that the motor of this fan system 3 brake immediately stops.
The present invention is with a periodic signal that includes several sequential, constitute this forward rotation control signal and this reverse rotation control signal with opposite each other sequential arrangement mode, below will be further at utilizing this forward rotation control signal and this reverse rotation control signal, carry out the detailed description of the motor 3 brake control modes of this fan system:
Please refer to shown in Fig. 3 and 4, when its motor 3 that discloses fan system of the present invention went on foot square wave drive with six, the electric current on these motor 3 coils 31,32 and 33 changed the loop cycle that presents six sequential S1 to S6 and changes.In the operation of sequential S1, these control unit 2 control these two electronic switch 11 and 12 conductings, four electronic switch 13 to 16 are closed in addition, so, electric current is flowed into by the 3rd input end 332 of this tertiary coil 33, and flow out from the first input end 312 of this first coil 31, and the electric current that will flow out this first coil 31 is defined as negative current, and the electric current that flows into this tertiary coil 33 is defined as positive current, and in this sequential S1, do not have electric current to pass through this second coil 32, can correspondingly obtain in view of the above as each coil 31,32 of sequential S1 among Fig. 4 and 33 current waveform.
Same, in the operation of sequential S2, these control unit 2 control these two electronic switch 12 and 13 conductings, other closes by four electronic switch 11 and 14 to 16, so, electric current is flowed into by second input end 322 of this second coil 32, and flow out from the first input end 312 of this first coil 31, and the electric current that will flow out this first coil 31 is defined as negative current, and the electric current that flows into this second coil 32 is defined as positive current, and in this sequential S2, there is not electric current to pass through this tertiary coil 33, in view of the above can corresponding each coil 31 that obtains as sequential S2 among Fig. 4,32 and 33 current waveform.
In like manner, by these two electronic switch 13 and 14 of conducting only, to carry out the operation of sequential S3; By these two electronic switch 14 and 15 of conducting only, to carry out the operation of sequential S4; By these two electronic switch 15 and 16 of conducting only, to carry out the operation of sequential S5; And by these two electronic switch 16 and 11 of conducting only, to carry out the operation of sequential S6.
So, when powering just often, this control unit 2 of the present invention can be planned the forward sequential of this forward rotation control signal in regular turn at above-mentioned sequential S1 to S6, in respectively this electronic switch conducting or close 11 to 16 of each time-oriented sequential control, so that this motor 3 carries out sequential operation according to sequential S1, sequential S2, sequential S3, sequential S4, sequential S5 and sequential S6, and then control this motor 3 and be rotated towards this predetermined direction.
Moreover, when abnormal electrical power supply (as interruption of power supply), this control unit 2 of the present invention can be planned the reverse sequential of this reverse rotation control signal at above-mentioned sequential S1 to S6 inverted sequence, that is, when if this interruption of power supply situation occurs in sequential S1, then the order of sequential S6, sequential S5, sequential S4, sequential S3, sequential S2 and sequential S1 is operated in regular turn, and then controls this motor 3 sense of rotation at this moment along rotating in contrast to this predetermined direction, so that the 3 instant brakes of the motor of this fan system stop.
Please refer to shown in Fig. 2 and 5, its motor 3 that discloses preferred embodiment of the present invention is a monophase system motor.This motor drive circuit 1 ' cooperates the number of phases of this motor 3 that two arm switch groups are set, and wherein the first arm switching group is in series by two electronic switch 11 ' and 14 ', and has one first A ' that is connected in series; And the second arm switch group is in series by two electronic switch 13 ' and 12 ', and has one second B ' that is connected in series.Moreover, four electronic switch 11 ' to 14 ' of this motor drive circuit 1 ' are elected the transistor switch respectively as, and these four electronic switch 11 ' to 14 ' have a controlled end 111 ', 121 ', 131 ' and 141 ' respectively, respectively this controlled end 111 ' to 141 ' can receive this forward rotation control signal or reverse rotation control signal respectively, and this electronic switch 11 ' to 14 ' forms conducting or closes to control respectively.In addition, this motor drive circuit 1 ' is gone up the electronic switch 11 ' of bridge and each controlled end 111 ' and 131 ' of 13 ' connects a transistor switch M1 ' and a M2 ' in addition respectively, by the operation of this transistor switch M1 ' and M2 ', go up the electronic switch 11 ' of bridge and 13 ' action so that control this motor drive circuit 1 '.
Shown in Fig. 2 and 5, the control output end group 21 ' of this control unit 2 ' cooperates the number of phases of this motor 3, four control output ends 211 ' are set, 212 ', 213 ' and 214 ', these four control output ends 211 ' to 214 ' connect this four electronic switch 11 ' to 14 ' respectively, this control unit 2 ' can produce this forward rotation control signal or reverse rotation control signal, and with this forward rotation control signal or reverse rotation control signal by these these four electronic switch 11 ' to 14 ' of four control output end 211 ' to 214 ' feed-ins, carry out the conducting or the closing control of these four electronic switch 11 ' to 14 '.
Shown in Fig. 2 and 5, disclosed single-phase motor 3 has single coil 34, and this coil 34 has an output terminal 341 and an input end 342.The input end 342 of this coil 34 connects first of these the first arm switching group A ' that is connected in series, and the output terminal 341 of this coil 34 connects second of these second arm switch groups B ' that is connected in series.
Moreover disclosed single-phase motor 3 can utilize sequential T1 and T2 as Fig. 6 to control.In the operation of sequential T1, this control unit 2 ' is controlled this two electronic switch 11 ' and 12 ' conducting, other closes by two electronic switch 13 ' and 14 ', so, electric current is flowed into by the input end 342 of this coil 34, and be defined as positive current, in view of the above can corresponding coil 34 current waveforms that obtain as sequential T1 among Fig. 6.
Same, in the operation of sequential T2, this control unit 2 ' is then only controlled this two electronic switch 13 ' and 14 ' conducting, and electric current is flowed into by the output terminal 341 of this coil 34, and be defined as negative current, in view of the above can corresponding coil 34 current waveforms that obtain as sequential T2 among Fig. 6.
Therefore, the present invention is when normal power supply, and this control unit 2 ' can be planned this forward rotation control signal in regular turn by above-mentioned sequential T1 and T2, and then controls this motor 3 and rotate towards this predetermined direction.And when unusual power supply, this control unit 2 ' can be planned this reverse rotation control signal according to above-mentioned sequential inverted sequence equally, that is, when if this interruption of power supply situation occurs in sequential T1, then the order of sequential T2 and sequential T1 is operated in regular turn, and then control this motor 3 sense of rotation at this moment along rotating in contrast to this predetermined direction, stop so that controlling these fan system motor 3 instant brakes.
In addition, motor with two-phase system equally can be by this motor drive circuit 1 of the present invention and 1 ' and the change of the circuit structure of control unit 2 and 2 ', and utilize this forward rotation control signal and this reverse rotation control signal to carry out positive and negative rotation of motor control, and can further reach this fan system effect that these motor 3 instant brakes of control stop under unusual power supply situation.
In sum, this control unit 2 of the present invention and 2 ' is when this input voltage VCC powers unusually, control this motor 3 sense of rotation at this moment along rotating in contrast to this predetermined direction, to carry out the operation that the instant brake of motor stops, compared to existing fan system and brake circuit thereof, the present invention should have instant stop element 94 now because of need not to be provided with, and then had the effect of circuit cost and the reduction of circuit connection complexity.
Claims (14)
1. fan system is characterized in that comprising:
A motor;
A motor drive circuit is electrically connected this motor; And
A control unit is electrically connected this motor drive circuit;
Wherein, when an input voltage supplied power to this fan system, this control unit produced a forward rotation control signal, controls this motor and rotates along a predetermined direction; When this input voltage that supplies power to this fan system interrupted, this control unit produced a reverse rotation control signal, controlled this motor along rotating in contrast to this predetermined direction.
2. fan system according to claim 1, it is characterized in that: the forward rotation control signal that this control unit produced is the one-period signal, this periodic signal comprises several sequential, and according to these several these forward rotation control signals of temporal orders arrangement formation, and several sequential of this periodic signal are arranged this reverse rotation control signal of formation with inverted sequence.
3. fan system according to claim 1 is characterized in that: other is provided with a voltage conversion unit, and a voltage detecting end of this control unit is electrically connected to an anode of a diode by this voltage conversion unit, and receives this input voltage.
4. fan system according to claim 1 is characterized in that: other is provided with an energy-storage units, and this energy-storage units, this motor drive circuit and this control unit are electrically connected to a negative electrode of a diode.
5. fan system according to claim 1 is characterized in that: this motor drive circuit is made of several electronic switch, and this motor drive circuit is electrically connected with this motor and forms a full-bridge type drive circuit or a semibridge system drive circuit.
6. fan system according to claim 3 is characterized in that: this voltage conversion unit is a bleeder circuit.
7. fan system according to claim 1 is characterized in that: this control unit is a microcontroller or a motor driven IC.
8. the brake circuit of a fan system comprises a control unit, it is characterized in that: when an input voltage supplied power to this fan system, this control unit produced a forward rotation control signal, controls a motor and rotates along a predetermined direction; When this input voltage that supplies power to this fan system interrupted, this control unit produced a reverse rotation control signal, controlled this motor along rotating in contrast to this predetermined direction.
9. the brake circuit of fan system according to claim 8, it is characterized in that: the forward rotation control signal that this control unit produced is the one-period signal, this periodic signal comprises several sequential, and according to these several these forward rotation control signals of temporal orders arrangement formation, and several sequential of this periodic signal are arranged this reverse rotation control signal of formation with inverted sequence.
10. the brake circuit of fan system according to claim 8, it is characterized in that: other is provided with a voltage conversion unit, a voltage detecting end of this control unit is electrically connected to an anode of a diode by this voltage conversion unit, and receives this input voltage.
11. the brake circuit of fan system according to claim 8 is characterized in that: other is provided with an energy-storage units, and this energy-storage units and this control unit are electrically connected to a negative electrode of a diode.
12. the brake circuit of fan system according to claim 8, it is characterized in that: other is provided with a motor drive circuit, this motor drive circuit is made of several electronic switch, and this motor drive circuit forms a full-bridge type drive circuit or a semibridge system drive circuit with being electrically connected of this motor.
13. the brake circuit of fan system according to claim 10 is characterized in that: this voltage conversion unit is a bleeder circuit.
14. the brake circuit of fan system according to claim 8 is characterized in that: this control unit is a microcontroller or a motor driven IC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100001171A CN102116304A (en) | 2010-01-05 | 2010-01-05 | Fan system and brake circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100001171A CN102116304A (en) | 2010-01-05 | 2010-01-05 | Fan system and brake circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102116304A true CN102116304A (en) | 2011-07-06 |
Family
ID=44215199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010100001171A Pending CN102116304A (en) | 2010-01-05 | 2010-01-05 | Fan system and brake circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102116304A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103684125A (en) * | 2012-09-07 | 2014-03-26 | 福特全球技术公司 | Electric motor torque control |
| CN103671183A (en) * | 2012-09-12 | 2014-03-26 | 鸿富锦精密工业(武汉)有限公司 | Computer fan control system |
| CN104753404A (en) * | 2013-12-26 | 2015-07-01 | 台达电子工业股份有限公司 | Fan motor brake device and control method thereof |
| CN106870426A (en) * | 2016-12-26 | 2017-06-20 | 奇鋐科技股份有限公司 | Fan motor powers off the circuit of brake automatically |
| CN111134577A (en) * | 2020-01-03 | 2020-05-12 | 北京石头世纪科技股份有限公司 | Fan control method and system |
-
2010
- 2010-01-05 CN CN2010100001171A patent/CN102116304A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103684125A (en) * | 2012-09-07 | 2014-03-26 | 福特全球技术公司 | Electric motor torque control |
| US9735720B2 (en) | 2012-09-07 | 2017-08-15 | Ford Global Technologies, Llc | Electric motor torque control |
| CN103684125B (en) * | 2012-09-07 | 2018-02-09 | 福特全球技术公司 | Motor torque controls |
| CN103671183A (en) * | 2012-09-12 | 2014-03-26 | 鸿富锦精密工业(武汉)有限公司 | Computer fan control system |
| CN104753404A (en) * | 2013-12-26 | 2015-07-01 | 台达电子工业股份有限公司 | Fan motor brake device and control method thereof |
| CN104753404B (en) * | 2013-12-26 | 2018-01-30 | 台达电子工业股份有限公司 | Fan motor brake gear and its control method |
| CN106870426A (en) * | 2016-12-26 | 2017-06-20 | 奇鋐科技股份有限公司 | Fan motor powers off the circuit of brake automatically |
| CN106870426B (en) * | 2016-12-26 | 2018-07-31 | 奇鋐科技股份有限公司 | Fan motor powers off the circuit of brake automatically |
| CN111134577A (en) * | 2020-01-03 | 2020-05-12 | 北京石头世纪科技股份有限公司 | Fan control method and system |
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