CN102694494A - Motor control system and fan using the same - Google Patents
Motor control system and fan using the same Download PDFInfo
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- CN102694494A CN102694494A CN201110070146XA CN201110070146A CN102694494A CN 102694494 A CN102694494 A CN 102694494A CN 201110070146X A CN201110070146X A CN 201110070146XA CN 201110070146 A CN201110070146 A CN 201110070146A CN 102694494 A CN102694494 A CN 102694494A
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- voltage
- order
- level
- pulse width
- width modulation
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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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
Abstract
A motor control system and a fan using the same are provided. The motor control system comprises a voltage adjusting module, a launching auxiliary module and a driving module. The voltage adjusting module is used to receive a voltage and adjust the voltage to generate a level adjusting voltage. The launching auxiliary module is used to generate a fixed duty cycle signal and output a fixed time for the fixed duty cycle signal in a scheduled period. The driving module is used to receive the level adjusting voltage and the fixed duty cycle signal and control the motor according to the level adjusting voltage and the fixed duty cycle signal. The invention further discloses a fan in which the motor control system is applied.
Description
Technical field
The present invention relates to a kind of control system, particularly relate to a kind of motor control system and applied fan thereof.
Background technology
5V and 12V motor applications are than the slow-speed of revolution time, and be limited for fear of the motor winding space, can't increase DCR (D.C. resistance) with winding mode, and then rotating speed is reduced to desired specification.Wherein, the 12V motor is difficulty especially, and this is because under the meticulous situation that winds the line, easily broken string when producing.Therefore, current methods is at motor control system Vcc end serial connection one resistance, reduce with the voltage that will input to IC, and then reach customer requirement, yet, might cause the problem that can't start.
In addition, as if the demand that motor is had the two-part rotating speed, prior art must create two kinds of different electric flow paths with switch; Thereby create two kinds of different supply voltages and produce two kinds of rotating speeds, but meaningless power consumption can be caused in the path that comprises resistance on resistance, and can cause and start difficulty; Cause on using; Need when start, to start, switch to low-grade rotating speed after the startup again, but this measure has the bigger problem of startup noise with high-grade rotating speed.
This shows that above-mentioned existing mode obviously still exists inconvenience and defective, and remains further to be improved.In order to address the above problem, association area is there's no one who doesn't or isn't sought solution painstakingly, but does not see always that for a long time suitable mode is developed completion.Therefore; How to improve the power dissipation problem that series resistor causes, improve and reduce the problem that is supplied to the voltage of IC and can't meets the specification of IC behind the series resistor, and improve and reduce the energy shortage that can cause IC to export behind the voltage; And the problem that causes motor to start; And the bigger problem of noise when improving motor starting, be one of current important research and development problem, also become current association area and need improved target badly.
Summary of the invention
One of content purpose of the present invention is that a kind of motor control system is being provided; Can improve the problem of the power dissipation that series resistor causes; Reduce the problem that is supplied to the voltage of IC and can't meets the specification of IC after improving series resistor; And improve to reduce the energy shortage that can cause IC to export behind the voltage, and the problem that causes motor to start, and the bigger problem of noise motor starting can be improved the time.
For achieving the above object, a technology kind attitude of content of the present invention is about a kind of motor control system, and it comprises VRM Voltage Regulator Module, starts supplementary module and driver module.VRM Voltage Regulator Module is in order to receiving voltage, and voltage is regulated and produced level adjustment voltage.Start supplementary module in order to producing fixedly responsibility cycle signal, and in a predetermined period, export fixedly responsibility cycle signal.Driver module is in order to incoming level adjustment voltage and fixing responsibility cycle signal, and according to level adjustment voltage and fixedly the responsibility cycle signal to control motor.
According to one embodiment of the invention, driver module comprises pulse generation unit, rotary speed controling unit and driver element.The pulse generation unit is in order to produce triangular wave.Rotary speed controling unit is in order to incoming level adjustment voltage and triangular wave, and comparative level adjustment voltage and triangular wave, to produce pulse width modulation control signal.Driver element in order to the received pulse width modulated control signal and fixedly the responsibility cycle signal with control motor.
According to another embodiment of the present invention, VRM Voltage Regulator Module comprises a plurality of voltage-regulation unit, and these voltage-regulation unit are in order to receiving voltage, and voltage is regulated and produced a plurality of level adjustment voltages; Wherein rotary speed controling unit is adjusted voltage and triangular wave in order to receive these level, and relatively these level are adjusted voltage and triangular waves, to produce pulse width modulation control signal.
For achieving the above object, a technology kind attitude of content of the present invention is about a kind of fan, and it comprises motor and motor control system.Motor control system comprises VRM Voltage Regulator Module, starts supplementary module and driver module.VRM Voltage Regulator Module is in order to receiving voltage, and voltage is regulated and produced level adjustment voltage.Start supplementary module in order to producing fixedly responsibility cycle signal, and in a predetermined period, export fixedly responsibility cycle signal.Driver module is in order to incoming level adjustment voltage and fixing responsibility cycle signal, and according to level adjustment voltage and fixedly the responsibility cycle signal to control motor.
According to one embodiment of the invention, driver module comprises pulse generation unit, rotary speed controling unit and driver element.The pulse generation unit is in order to produce triangular wave.Rotary speed controling unit is in order to incoming level adjustment voltage and triangular wave, and comparative level adjustment voltage and triangular wave, to produce pulse width modulation control signal.Driver element in order to the received pulse width modulated control signal and fixedly the responsibility cycle signal with control motor.
According to another embodiment of the present invention, VRM Voltage Regulator Module comprises a plurality of voltage-regulation unit, and these voltage-regulation unit are in order to receiving voltage, and voltage is regulated and produced a plurality of level adjustment voltages; Wherein rotary speed controling unit is adjusted voltage and triangular wave in order to receive these level, and relatively these level are adjusted voltage and triangular waves, to produce pulse width modulation control signal.
For achieving the above object, a technology kind attitude of content of the present invention is about a kind of motor control system, and it comprises the pulse width modulation control signal generation module, starts supplementary module and driver module.The pulse width modulation control signal generation module is in order to produce pulse width modulation control signal.Start supplementary module in order to producing fixedly responsibility cycle signal, and in a predetermined period, export fixedly responsibility cycle signal.Driver module is in order to received pulse width modulated control signal and fixing responsibility cycle signal, and according to pulse width modulation control signal and fixedly the responsibility cycle signal with the control motor.
According to one embodiment of the invention, the pulse width modulation control signal generation module comprises VRM Voltage Regulator Module, pulse generation unit and rotary speed controling unit.VRM Voltage Regulator Module is in order to receiving voltage, and voltage is regulated and produced level adjustment voltage.The pulse generation unit is in order to produce triangular wave.Rotary speed controling unit is in order to incoming level adjustment voltage and triangular wave, and comparative level adjustment voltage and triangular wave, to produce pulse width modulation control signal.
According to another embodiment of the present invention, VRM Voltage Regulator Module comprises a plurality of voltage-regulation unit, and these voltage-regulation unit are in order to receiving voltage, and voltage is regulated and produced a plurality of level adjustment voltages; Wherein rotary speed controling unit is adjusted voltage and triangular wave in order to receive these level, and relatively these level are adjusted voltage and triangular waves, to produce pulse width modulation control signal.
For achieving the above object, a technology kind attitude of content of the present invention is about a kind of fan, and it comprises motor and motor control system.Motor control system comprises the pulse width modulation control signal generation module, starts supplementary module and driver module.The pulse width modulation control signal generation module is in order to produce pulse width modulation control signal.Start supplementary module in order to producing fixedly responsibility cycle signal, and in a predetermined period, export fixedly responsibility cycle signal.Driver module is in order to received pulse width modulated control signal and fixing responsibility cycle signal, and according to pulse width modulation control signal and fixedly the responsibility cycle signal with the control motor.
According to one embodiment of the invention, the pulse width modulation control signal generation module comprises VRM Voltage Regulator Module, pulse generation unit and rotary speed controling unit.VRM Voltage Regulator Module is in order to receiving voltage, and voltage is regulated and produced level adjustment voltage.The pulse generation unit is in order to produce triangular wave.Rotary speed controling unit is in order to incoming level adjustment voltage and triangular wave, and comparative level adjustment voltage and triangular wave, to produce pulse width modulation control signal.
According to another embodiment of the present invention, VRM Voltage Regulator Module comprises a plurality of voltage-regulation unit, and these voltage-regulation unit are in order to receiving voltage, and voltage is regulated and produced a plurality of level adjustment voltages; Wherein rotary speed controling unit is adjusted voltage and triangular wave in order to receive these level, and relatively these level are adjusted voltage and triangular waves, to produce pulse width modulation control signal.
Therefore; According to technology contents of the present invention, the embodiment of the invention is by a kind of motor control system being provided, using the problem of improving the power dissipation that series resistor causes; Reduce the problem that is supplied to the voltage of IC and can't meets the specification of IC after improving series resistor; And improve to reduce the energy shortage that can cause IC to export behind the voltage, and the problem that causes motor to start, and the bigger problem of noise can improve motor starting by the multisection type rotating speed time.
Description of drawings
For making above-mentioned and other purposes of the present invention, characteristic, advantage and the embodiment can be more obviously understandable, description of drawings of the present invention be following:
Fig. 1 shows a kind of circuit block diagram that comprises the fan of motor control system according to first embodiment of the invention.
Fig. 2 shows a kind of circuit box sketch map that comprises the fan of motor control system according to second embodiment of the invention.
Fig. 3 A shows the circuit diagram according to a kind of motor control system of third embodiment of the invention; Fig. 3 B and Fig. 3 C show the circuit diagram according to a kind of motor control system of Fig. 3 A of the present invention.
Fig. 4 A shows the circuit diagram according to a kind of motor control system of four embodiment of the invention; Fig. 4 B and Fig. 4 C show the waveform sketch map according to a kind of motor control system of Fig. 4 A of the present invention.
Fig. 5 A shows the circuit diagram according to a kind of motor control system of fifth embodiment of the invention; Fig. 5 B and Fig. 5 C show the waveform sketch map according to a kind of motor control system of Fig. 5 A of the present invention.
Fig. 6 A shows the circuit diagram according to a kind of motor control system of sixth embodiment of the invention; Fig. 6 B, Fig. 6 C and Fig. 6 D show the waveform sketch map according to a kind of motor control system of Fig. 6 A of the present invention.
Fig. 7 A shows the circuit diagram according to a kind of motor control system of seventh embodiment of the invention; Fig. 7 B, Fig. 7 C, Fig. 7 D and Fig. 7 E show the waveform sketch map according to a kind of motor control system of Fig. 7 A of the present invention.
The reference numeral explanation
100: motor control system
110: VRM Voltage Regulator Module
120: start supplementary module
130: driver module
132: the pulse generation unit
134: rotary speed controling unit
136: driver element
140: fan
142: motor
200: motor control system
210: the pulse width modulation control signal generation module
212: VRM Voltage Regulator Module
214: the pulse generation unit
216: rotary speed controling unit
220: start supplementary module
230: driver module
240: fan
242: motor
Embodiment
For the narration that makes disclosure of the present invention more detailed and complete, can be with reference to accompanying drawing and the various embodiment of the following stated, identical number is represented same or analogous element in the accompanying drawing.But the embodiment that is provided not is the scope that contains in order to restriction the present invention; And the description of structure running is non-in order to limit the order of its execution; Any structure that is reconfigured by element, the device with impartial effect that produces is all the scope that the present invention is contained.Wherein accompanying drawing is not mapped according to life size only for the purpose of description.On the other hand, well-known element and step are not described among the embodiment, to avoid that the present invention is caused unnecessary restriction.
Fig. 1 is a kind of circuit block diagram that comprises the fan of motor control system 100 that illustrates according to first embodiment of the invention.
As shown in Figure 1, motor control system 100 comprises VRM Voltage Regulator Module 110, starts supplementary module 120 and driver module 130.
In operation, VRM Voltage Regulator Module 110 is in order to receiving voltage, and voltage is regulated and produced level adjustment voltage.Start supplementary module 120 in order to producing fixedly responsibility cycle signal, and in a predetermined period, export fixedly responsibility cycle signal.Driver module 130 is in order to incoming level adjustment voltage and fixing responsibility cycle signal, and according to level adjustment voltage and fixedly the responsibility cycle signal controlling motor 142, and then drive fan 140.
In detail, driver module 130 comprises pulse generation unit 132, rotary speed controling unit 134 and driver element 136.Pulse generation unit 132 is in order to produce triangular wave.Rotary speed controling unit 134 is in order to incoming level adjustment voltage and triangular wave, and comparative level adjustment voltage and triangular wave, to produce pulse width modulation control signal.Driver element 136 in order to the received pulse width modulated control signal and fixedly the responsibility cycle signal with control motor 142, and then drive fan 140.
According to principle of the present invention and spirit, starting supplementary module 120 can export fixedly responsibility cycle signal in a predetermined period when starter 142, and wherein the length of the size of responsibility cycle and predetermined period all can be set according to actual demand.Thus; When starter 142, except the pulse width modulation control signal that rotary speed controling unit 134 is exported, still can provide fixedly the responsibility cycle signal to driver element 136 by starting supplementary module 120; With assistance starter 142, and then drive fan 140.After the starter 142, can give driver element 136 by the control signal of rotary speed controling unit 134 outputs again, control the running of motor 142 again by driver element 136, and then drive fan 140.
Moreover application start supplementary module 120 does not promptly need when motor 142 starts to switch to the slow-speed of revolution after the startup more earlier with high rotational speed, and then the bigger problem of noise when improving motor 142 and starting.
In addition, VRM Voltage Regulator Module 110 comprises a plurality of voltage-regulation unit VR11～VRnm, and these voltage-regulation unit VR11～VRnm is in order to receiving voltage, and voltage is regulated and produced a plurality of level adjustment voltages; Wherein rotary speed controling unit 134 is adjusted voltage and triangular wave in order to receive these level, and relatively these level are adjusted voltage and triangular waves, to produce pulse width modulation control signal.
Thus; By the operation between VRM Voltage Regulator Module 110, pulse generation unit 132 and the rotary speed controling unit 134; Can provide the different voltages with different level to come to compare by VRM Voltage Regulator Module 110, and produce pulse width modulation control signal, and not need additional strings connecting resistance on motor control system 100 with different responsibility cycle with triangular wave; And then improve the power dissipation problem that series resistor causes; Reduce the problem that is supplied to the voltage of IC and can't meets the specification of IC after improving series resistor, and can improve and reduce the energy shortage that can cause IC to export behind the voltage, and the problem that causes motor to start.
For example, arbitrary voltage-regulation unit VR11～VRnm can be bleeder circuit, and these voltage-regulation unit VR11～VRnm can be configured according to the circuit actual demand, to produce required dividing potential drop.In addition, start supplementary module 120 and can be VRM Voltage Regulator Module, starting supplementary module 120 can export fixedly responsibility cycle signal according to the circuit actual demand.Moreover rotary speed controling unit 134 can be comparator, and it is in order to receive a plurality of level adjustment voltages, and relatively these level are adjusted voltage and triangular waves, and have the pulse width modulation control signal of different responsibility cycle with generation according to comparative result.
Fig. 2 is a kind of circuit box sketch map that comprises the fan of motor control system 200 that illustrates according to second embodiment of the invention.As shown in Figure 2, motor control system 200 comprises pulse width modulation control signal generation module 210, starts supplementary module 220 and driver module 230.In operation, pulse width modulation control signal generation module 210 is in order to produce pulse width modulation control signal.Start supplementary module 220 in order to producing fixedly responsibility cycle signal, and in a predetermined period, export fixedly responsibility cycle signal.Driver module 230 is in order to received pulse width modulated control signal and fixing responsibility cycle signal, and according to pulse width modulation control signal and fixedly the responsibility cycle signal with control motor 242, and then drive fan 240.
In detail, pulse width modulation control signal generation module 210 comprises VRM Voltage Regulator Module 212, pulse generation unit 214 and rotary speed controling unit 216.VRM Voltage Regulator Module 212 is in order to receiving voltage, and voltage is regulated and produced level adjustment voltage.Pulse generation unit 214 is in order to produce triangular wave.Rotary speed controling unit 216 is in order to incoming level adjustment voltage and triangular wave, and comparative level adjustment voltage and triangular wave, to produce pulse width modulation control signal.
According to principle of the present invention and spirit, starting supplementary module 220 can export fixedly responsibility cycle signal in a predetermined period when starter 242, and wherein the length of the size of responsibility cycle and predetermined period all can be set according to actual demand.Thus; When starter 242, except the pulse width modulation control signal that rotary speed controling unit 216 is exported, still can fixedly responsibility cycle signal of driver element 230 be provided by starting supplementary module 220; With assistance starter 242, and then drive fan 240.After the starter 242, can give driver module 230 by the control signal of rotary speed controling unit 216 outputs again, control the running of motor 242 again by driver module 230, and then drive fan 240.
Moreover application start supplementary module 220 does not promptly need when motor 242 starts to switch to the slow-speed of revolution after the startup more earlier with high rotational speed, and then the bigger problem of noise when improving motor 242 and starting.
In addition, VRM Voltage Regulator Module 212 comprises a plurality of voltage-regulation unit VR11～VRnm, and these voltage-regulation unit VR11～VRnm is in order to receiving voltage, and voltage is regulated and produced a plurality of level adjustment voltages; Wherein rotary speed controling unit 216 is adjusted voltage and triangular wave in order to receive these level, and relatively these level are adjusted voltage and triangular waves, to produce pulse width modulation control signal.
Thus; By the operation between VRM Voltage Regulator Module 212, pulse generation unit 214 and the rotary speed controling unit 216; Can provide the different voltages with different level to come to compare by VRM Voltage Regulator Module 212, and produce pulse width modulation control signal, and not need additional strings connecting resistance on motor control system 200 with different responsibility cycle with triangular wave; And then improve the power dissipation problem that series resistor causes; Reduce the problem that is supplied to the voltage of IC and can't meets the specification of IC after improving series resistor, and can improve and reduce the energy shortage that can cause IC to export behind the voltage, and the problem that causes motor to start.
For example, any voltage-regulation unit VR11～VRnm all can be bleeder circuit, and these voltage-regulation unit VR11～VRnm can be configured according to the circuit actual demand, to produce required dividing potential drop.In addition, start supplementary module 220 and can be VRM Voltage Regulator Module, starting supplementary module 220 can export fixedly responsibility cycle signal according to the circuit actual demand.Moreover rotary speed controling unit 216 can be comparator, and it is in order to receive a plurality of level adjustment voltages, and relatively these level are adjusted voltage and triangular waves, and have the pulse width modulation control signal of different responsibility cycle with generation according to comparative result.
Fig. 3 A is the circuit diagram of a kind of motor control system of illustrating according to third embodiment of the invention.Fig. 3 B and Fig. 3 C are the waveform sketch mapes of a kind of motor control system of illustrating according to Fig. 3 A of the present invention.
Be the corresponding relation of circuit block diagram among Fig. 1 to Fig. 2 and following circuit diagram (Fig. 3 A to Fig. 7 A) what this need explain earlier.At first, VRM Voltage Regulator Module 110 or 212 is corresponding to power switch in the circuit diagram (Q1, Q2) and bleeder circuit.Secondly; Pulse generation unit 132 or 214, rotary speed controling unit 134 or 216, driver element 136 or driver module 230 and start supplementary module 120 or 220, no matter the individual component of aforementioned unit or the module that is integrated into all are contained in the IC among Fig. 3 A to Fig. 7 A.What this need specify being, is that the IC with 8pin is an example among Fig. 3 A, but the present invention is not limited thereto, and other are like 10pin, 12pin, the also applicable the present invention of IC such as 16pin.
Shown in Fig. 3 B, when power switch Q1 conducting, SET1 voltage ground connection, this moment SET1 and SET2 the voltage equipotential, that is be in identical voltage level.As shown in the figure, the voltage level of SET1 and SET2 all is lower than triangular wave, behind the voltage level that compares triangular wave and SET1 and SET2, can be by the pulse width modulation control signal of OUT1 output duty cycle 100%, and mat turns round motor at full speed.Be that the OUT1 that is painted among the figure such as Fig. 3 B and Fig. 3 C illustrates with the data that the OUT1 that measures IC among Fig. 3 A holds to form what this needed explanation earlier.
Please with reference to Fig. 3 C, when not conducting of power switch Q1, the voltage level of SET1 can be higher than the voltage level of SET2.What this needed explanation earlier be; The embodiment of the invention set with voltage level the higher person as with triangular wave foundation relatively; Right its is not in order to qualification the present invention, those skilled in the art, under the premise without departing from the spirit and scope of the present invention; Can set and triangular wave foundation relatively according to actual demand, for example set with the voltage level junior as with triangular wave foundation relatively.
As previously mentioned, asking 3C with the aid of pictures, behind the voltage level that compares triangular wave and SET1, can be about 20% pulse width modulation control signal by the OUT1 output duty cycle, and mat makes motor with half-speed operation.
Fig. 4 A is the circuit diagram of a kind of motor control system of illustrating according to fourth embodiment of the invention.Fig. 4 B and Fig. 4 C are the waveform sketch mapes of a kind of motor control system of illustrating according to Fig. 4 A of the present invention.
Shown in Fig. 4 B, when power switch Q1 conducting, SET1 voltage ground connection, the voltage level of SET2 is higher than the voltage level of SET1 at this moment.As previously mentioned, behind the voltage level that compares triangular wave and SET2, can by the OUT1 output duty cycle pulse width modulation control signal of A, mat makes motor with first section rotation speed operation.Be that the OUT1 that is painted among the figure such as Fig. 4 B and Fig. 4 C illustrates with the data that the OUT1 that measures IC among Fig. 4 A holds to form what this needed explanation earlier.
Please with reference to Fig. 4 C, when not conducting of power switch Q1, the voltage level of SET1 is higher than the voltage level of SET2.As previously mentioned, behind the voltage level that compares triangular wave and SET1, can by the OUT1 output duty cycle pulse width modulation control signal of B, mat makes motor with second section rotation speed operation.
Thus; Motor control system shown in Fig. 3 A and Fig. 4 A is via above-mentioned control to power switch (Q1); Be may command motor and produce two sections different rotating speed, the full speed and Half Speed rotating speed that are produced like Fig. 3 A, and first section rotating speed and second section rotating speed of being produced like Fig. 4 A.
Fig. 5 A is the circuit diagram of a kind of motor control system of illustrating according to fifth embodiment of the invention.Fig. 5 B and Fig. 5 C are the waveform sketch mapes of a kind of motor control system of illustrating according to Fig. 5 A of the present invention.
Shown in Fig. 5 B, when power switch Q1 conducting, R1 and R2 can carry out dividing potential drop and the dividing potential drop of winning, and the voltage level of SET1 is first dividing potential drop.At this moment, as shown in the figure, SET2 ground connection; The voltage level that can get SET1 is higher than the voltage level of SET2; Behind the voltage level that compares triangular wave and SET1, can by the OUT1 output duty cycle pulse width modulation control signal of A, mat makes motor with first section rotation speed operation.Be that the OUT1 that is painted among the figure such as Fig. 5 B and Fig. 5 C illustrates with the data that the OUT1 that measures IC among Fig. 5 A holds to form what this needed explanation earlier.
Please with reference to Fig. 5 C, when not conducting of power switch Q1, R1 and R2+R2 carry out dividing potential drop and get second dividing potential drop, and the voltage level of SET1 is second dividing potential drop.At this moment, as shown in the figure, SET2 ground connection; The voltage level that can get SET1 is higher than the voltage level of SET2; Behind the voltage level that compares triangular wave and SET1, can by the OUT1 output duty cycle pulse width modulation control signal of B, mat makes motor with second section rotation speed operation.
Please in the lump with reference to Fig. 5 B and Fig. 5 C; The voltage level of SET1 in Fig. 7 C is second dividing potential drop; It is higher than the voltage level (first dividing potential drop) of SET1 in Fig. 7 B; Therefore, after first dividing potential drop and second dividing potential drop compare with triangular wave respectively, exportable two sections rotating speeds (first section rotating speed and second section rotating speed).
Fig. 6 A is the circuit diagram that illustrates a kind of motor control system according to sixth embodiment of the invention.Fig. 6 B, Fig. 6 C and Fig. 6 D are the waveform sketch mapes that illustrates a kind of motor control system according to Fig. 6 A of the present invention.
Shown in Fig. 6 B, when power switch Q1 conducting, not conducting of power switch Q2, R1 and R2 carry out dividing potential drop and the dividing potential drop of winning, and the voltage level of SET1 is first dividing potential drop.As shown in the figure, the voltage level of SET1 is higher than the voltage level of SET2, behind the voltage level that compares triangular wave and SET1, can be the pulse width modulation control signal of A by the OUT1 output duty cycle, and mat makes motor with first section rotation speed operation.Be that the OUT1 that is painted among the figure such as Fig. 6 B, Fig. 6 C and Fig. 6 D illustrates with the data that the OUT1 that measures IC among Fig. 6 A holds to form what this needed explanation earlier.
Please with reference to Fig. 6 C, when not conducting of power switch Q1, power switch Q2 conducting, SET1 voltage ground connection, this moment SET1 and SET2 the voltage equipotential, that is be in identical voltage level.As shown in the figure, the voltage level of SET1 and SET2 all is lower than triangular wave, behind the voltage level that compares triangular wave and SET1 and SET2, can be by the pulse width modulation control signal of OUT1 output duty cycle 100%, and mat turns round motor at full speed.
Please with reference to Fig. 6 D, when not conducting of power switch Q1, not conducting of power switch Q2, R1 and R2+R2 carry out dividing potential drop and second dividing potential drop, and the voltage level of SET1 is second dividing potential drop.As shown in the figure, the voltage level of SET1 is higher than the voltage level of SET2, behind the voltage level that compares triangular wave and SET1, can be the pulse width modulation control signal of F by the OUT1 output duty cycle, and mat makes motor with second section rotation speed operation.
When not conducting of power switch Q1, not conducting of power switch Q2, SET1 voltage ground connection, this moment SET1 and SET2 the voltage equipotential, that is be in identical voltage level.The voltage level of SET1 and SET2 all is lower than triangular wave; Behind the voltage level that compares triangular wave and SET1 and SET2, can be by the pulse width modulation control signal of OUT1 output duty cycle 100%, mat turns round motor at full speed; Because of its control model is identical with Fig. 6 C, so this seldom superfluous illustrating.
Thus, the motor control system shown in Fig. 6 A is via above-mentioned control to power switch (Q1 and Q2), i.e. may command motor and produce three sections different rotating speed (first section rotating speed, second section rotating speed and at full speed).
Fig. 7 A is the circuit diagram of a kind of motor control system of illustrating according to seventh embodiment of the invention.Fig. 7 B, Fig. 7 C, Fig. 7 D and Fig. 7 E are the waveform sketch mapes of a kind of motor control system of illustrating according to Fig. 7 A of the present invention.
Shown in Fig. 7 B, when power switch Q1 conducting, not conducting of power switch Q2, R1 and R2 carry out dividing potential drop and the dividing potential drop of winning, and R4 and R5 carry out dividing potential drop and second dividing potential drop, the voltage level of SET1 is first dividing potential drop, and the voltage level of SET2 is second dividing potential drop.If second dividing potential drop is greater than first dividing potential drop; As shown in the figure, the voltage level of SET2 is higher than the voltage level of SET1, behind the voltage level that compares triangular wave and SET2; Can be the pulse width modulation control signal of A by the OUT1 output duty cycle, mat makes motor with first section rotation speed operation.Be that the OUT1 that is painted among the figure such as Fig. 7 B, Fig. 7 C, Fig. 7 D and Fig. 7 E illustrates with the data that the OUT1 that measures IC among Fig. 7 A holds to form what this needed explanation earlier.
Please with reference to Fig. 7 C; When not conducting of power switch Q1, power switch Q2 conducting, R1 and R2+R2 carry out dividing potential drop and get the 3rd dividing potential drop, and the voltage level of SET1 is the 3rd dividing potential drop; As shown in the figure; Behind the voltage level that compares triangular wave and SET1, can by the OUT1 output duty cycle pulse width modulation control signal of B, mat makes motor with second section rotation speed operation.
Please with reference to Fig. 7 D; When not conducting of power switch Q1, not conducting of power switch Q2, R1 and R2+R2 carry out dividing potential drop and the 3rd dividing potential drop, and R4 and R5 carry out dividing potential drop and must second dividing potential drop; The voltage level of SET1 is the 3rd dividing potential drop, and the voltage level of SET2 is second dividing potential drop.As shown in the figure, the voltage level of SET1 is higher than the voltage level of SET2, behind the voltage level that compares triangular wave and SET1, can be the pulse width modulation control signal of C by the OUT1 output duty cycle, and mat makes motor with the 3rd section rotation speed operation.
Please with reference to Fig. 7 E, when power switch Q1 conducting, power switch Q2 conducting, R1 and R2 carry out dividing potential drop and the dividing potential drop of winning; The voltage level of SET1 is first dividing potential drop; As shown in the figure, the voltage level of SET1 is higher than the voltage level of SET2, behind the voltage level that compares triangular wave and SET1; Can be the pulse width modulation control signal of D by the OUT1 output duty cycle, mat makes motor with the 4th section rotation speed operation.
Thus, the motor control system shown in Fig. 7 A is via above-mentioned control to power switch (Q1 and Q2), i.e. may command motor and produce four sections different rotating speed (first section rotating speed, second section rotating speed, the 3rd section rotating speed and the 4th section rotating speed).
Shown in Fig. 3 A to 7E figure; The embodiment of the invention can according to actual demand; Use different circuits configuration (being equivalent to the VRM Voltage Regulator Module in the allocation plan 1 to Fig. 4) and operator scheme, produce the pulse width modulation control signal with different duty, mat makes motor produce the multisection type rotating speed.Thus, use different circuits configuration (VRM Voltage Regulator Module), not only do not need series resistor, still can satisfy the demand of user for different motor rotary speeds.
Fig. 3 A to 7E figure only illustrates to the right property of example and can make motor produce two sections circuit arrangement to four sections rotating speeds (VRM Voltage Regulator Module); Right its is not in order to limit the present invention; Those skilled in the art; Under the premise without departing from the spirit and scope of the present invention, can use different circuits configuration (VRM Voltage Regulator Module) so that motor produces the multisection type rotating speed.
Can know by the invention described above execution mode, use the present invention and have advantage.The embodiment of the invention is by a kind of motor control system is provided; Use the problem of improving the power dissipation that series resistor causes; Reduce the problem that is supplied to the voltage of IC and can't meets the specification of IC after improving series resistor; Improve to reduce the energy shortage that can cause IC to export behind the voltage, and the problem that causes motor to start, and the bigger problem of noise can improve motor starting by the multisection type rotating speed time.
Though the present invention discloses as above with execution mode; Right its is not in order to qualification the present invention, those skilled in the art, under the premise without departing from the spirit and scope of the present invention; Can do various changes and retouching, so protection scope of the present invention is to be as the criterion with claim of the present invention.
Claims (12)
1. motor control system comprises:
One VRM Voltage Regulator Module in order to receiving a voltage, and is regulated and is produced level adjustment voltage this voltage;
One starts supplementary module, in order to producing a fixing responsibility cycle signal, and in a predetermined period this fixing responsibility cycle signal of output; And
One driver module, in order to receiving this level adjustment voltage and fixing responsibility cycle signal, and according to this level adjustment voltage be somebody's turn to do fixedly the responsibility cycle signal to control a motor.
2. motor control system as claimed in claim 1, wherein this driver module comprises:
One pulse generation unit is in order to produce a triangular wave;
One rotary speed controling unit adjust voltage and this triangular wave in order to receive this level, and relatively this level is adjusted voltage and this triangular wave, to produce a pulse width modulation control signal; And
One driver element, in order to receive this pulse width modulation control signal with should be fixedly the responsibility cycle signal to control this motor.
3. motor control system as claimed in claim 2, wherein this VRM Voltage Regulator Module comprises:
A plurality of voltage-regulation unit, these voltage-regulation unit be in order to receiving this voltage, and this voltage is regulated and produced a plurality of level adjustment voltages;
Wherein this rotary speed controling unit is adjusted voltage and this triangular wave in order to receive these level, and relatively these level are adjusted voltage and this triangular waves, to produce this pulse width modulation control signal.
4. fan comprises:
One motor; And
One motor control system comprises:
One VRM Voltage Regulator Module in order to receiving a voltage, and is regulated and is produced level adjustment voltage this voltage;
One starts supplementary module, in order to producing a fixing responsibility cycle signal, and in a predetermined period this fixing responsibility cycle signal of output; And
One driver module, in order to receiving this level adjustment voltage and fixing responsibility cycle signal, and according to this level adjustment voltage be somebody's turn to do fixedly the responsibility cycle signal to control this motor.
5. fan as claimed in claim 4, wherein this driver module comprises:
One pulse generation unit is in order to produce a triangular wave;
One rotary speed controling unit adjust voltage and this triangular wave in order to receive this level, and relatively this level is adjusted voltage and this triangular wave, to produce a pulse width modulation control signal; And
One driver element, in order to receive this pulse width modulation control signal with should be fixedly the responsibility cycle signal to control this motor.
6. fan as claimed in claim 5, wherein this VRM Voltage Regulator Module comprises:
A plurality of voltage-regulation unit, these voltage-regulation unit be in order to receiving this voltage, and this voltage is regulated and produced a plurality of level adjustment voltages;
Wherein this rotary speed controling unit is adjusted voltage and this triangular wave in order to receive these level, and relatively these level are adjusted voltage and this triangular waves, to produce this pulse width modulation control signal.
7. motor control system comprises:
One pulse width modulation control signal generation module is in order to produce a pulse width modulation control signal;
One starts supplementary module, in order to producing a fixing responsibility cycle signal, and in a predetermined period this fixing responsibility cycle signal of output; And
One driver module, in order to receive this pulse width modulation control signal with should be fixedly the responsibility cycle signal, and according to this pulse width modulation control signal with this fixedly the responsibility cycle signal to control a motor.
8. motor control system as claimed in claim 7, wherein this pulse width modulation control signal generation module comprises:
One VRM Voltage Regulator Module in order to receiving a voltage, and is regulated and is produced level adjustment voltage this voltage;
One pulse generation unit is in order to produce a triangular wave; And
One rotary speed controling unit adjust voltage and this triangular wave in order to receive this level, and relatively this level is adjusted voltage and this triangular wave, to produce this pulse width modulation control signal.
9. motor control system as claimed in claim 8, wherein this VRM Voltage Regulator Module comprises:
A plurality of voltage-regulation unit, these voltage-regulation unit be in order to receiving this voltage, and this voltage is regulated and produced a plurality of level adjustment voltages;
Wherein this rotary speed controling unit is adjusted voltage and this triangular wave in order to receive these level, and relatively these level are adjusted voltage and this triangular waves, to produce this pulse width modulation control signal.
10. fan comprises:
One motor; And
One motor control system comprises:
One pulse width modulation control signal generation module is in order to produce a pulse width modulation control signal;
One starts supplementary module, in order to producing a fixing responsibility cycle signal, and in a predetermined period this fixing responsibility cycle signal of output; And
One driver module, in order to receive this pulse width modulation control signal with should be fixedly the responsibility cycle signal, and according to this pulse width modulation control signal with this fixedly the responsibility cycle signal to control this motor.
11. fan as claimed in claim 10, wherein this pulse width modulation control signal generation module comprises:
One VRM Voltage Regulator Module in order to receiving a voltage, and is regulated and is produced level adjustment voltage this voltage;
One pulse generation unit is in order to produce a triangular wave; And
One rotary speed controling unit adjust voltage and this triangular wave in order to receive this level, and relatively this level is adjusted voltage and this triangular wave, to produce this pulse width modulation control signal.
12. fan as claimed in claim 11, wherein this VRM Voltage Regulator Module comprises:
A plurality of voltage-regulation unit, these voltage-regulation unit be in order to receiving this voltage, and this voltage is regulated and produced a plurality of level adjustment voltages;
Wherein this rotary speed controling unit is adjusted voltage and this triangular wave in order to receive these level, and relatively these level are adjusted voltage and this triangular waves, to produce this pulse width modulation control signal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110070146XA CN102694494A (en) | 2011-03-23 | 2011-03-23 | Motor control system and fan using the same |
| CN201510844799.7A CN105391358B (en) | 2011-03-23 | 2011-03-23 | Motor control system and its applied fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110070146XA CN102694494A (en) | 2011-03-23 | 2011-03-23 | Motor control system and fan using the same |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510844799.7A Division CN105391358B (en) | 2011-03-23 | 2011-03-23 | Motor control system and its applied fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102694494A true CN102694494A (en) | 2012-09-26 |
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|---|---|---|---|
| CN201510844799.7A Active CN105391358B (en) | 2011-03-23 | 2011-03-23 | Motor control system and its applied fan |
| CN201110070146XA Pending CN102694494A (en) | 2011-03-23 | 2011-03-23 | Motor control system and fan using the same |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510844799.7A Active CN105391358B (en) | 2011-03-23 | 2011-03-23 | Motor control system and its applied fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI608319B (en) * | 2015-06-16 | 2017-12-11 | 群光電能科技股份有限公司 | Method for robust-controlling rotating speed of fan |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1747314A (en) * | 2004-09-08 | 2006-03-15 | 台达电子工业股份有限公司 | Rotating-speed control circuit of fan motor and voltage adjusting assembly |
| CN1905354A (en) * | 2006-07-26 | 2007-01-31 | 协禧电机股份有限公司 | Multi-mode integrated regulating circuit for controlling fan |
| JP4217921B1 (en) * | 2007-12-26 | 2009-02-04 | 三洋電機株式会社 | Motor drive circuit, fan motor, electronic device, and notebook personal computer |
| US20090322262A1 (en) * | 2008-06-25 | 2009-12-31 | Hitachi, Ltd. | Controller For Permanent Magnet Synchronous Motor and Motor Control System |
| US20100181951A1 (en) * | 2009-01-22 | 2010-07-22 | Sanyo Electric Co., Ltd. | Motor drive circuit |
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2011
- 2011-03-23 CN CN201510844799.7A patent/CN105391358B/en active Active
- 2011-03-23 CN CN201110070146XA patent/CN102694494A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1747314A (en) * | 2004-09-08 | 2006-03-15 | 台达电子工业股份有限公司 | Rotating-speed control circuit of fan motor and voltage adjusting assembly |
| CN1905354A (en) * | 2006-07-26 | 2007-01-31 | 协禧电机股份有限公司 | Multi-mode integrated regulating circuit for controlling fan |
| JP4217921B1 (en) * | 2007-12-26 | 2009-02-04 | 三洋電機株式会社 | Motor drive circuit, fan motor, electronic device, and notebook personal computer |
| US20090322262A1 (en) * | 2008-06-25 | 2009-12-31 | Hitachi, Ltd. | Controller For Permanent Magnet Synchronous Motor and Motor Control System |
| US20100181951A1 (en) * | 2009-01-22 | 2010-07-22 | Sanyo Electric Co., Ltd. | Motor drive circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI608319B (en) * | 2015-06-16 | 2017-12-11 | 群光電能科技股份有限公司 | Method for robust-controlling rotating speed of fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105391358A (en) | 2016-03-09 |
| CN105391358B (en) | 2019-04-09 |
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Application publication date: 20120926 |