CN103684120B - A kind of thoughts brshless DC motor driving method - Google Patents
A kind of thoughts brshless DC motor driving method Download PDFInfo
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- CN103684120B CN103684120B CN201210321206.5A CN201210321206A CN103684120B CN 103684120 B CN103684120 B CN 103684120B CN 201210321206 A CN201210321206 A CN 201210321206A CN 103684120 B CN103684120 B CN 103684120B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/15—Controlling commutation time
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
- H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
- H02P6/181—Circuit arrangements for detecting position without separate position detecting elements using different methods depending on the speed
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/20—Arrangements for starting
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of thoughts brshless DC motor driving method, it is characterized in that, mainly comprise the following steps: (1) starts after power supply, and system enters thoughts electric motor starting pattern automatically, then by the operation of thoughts drive pattern; (2) system is according to the calculated signals motor speed n of rotor-position sensor; (3) judge whether this motor speed n is greater than predetermined " thoughts " and drives the threshold rotation speed n that is transformed into " noninductive " drivingaEtc. step. The present invention not only can effectively reduce the operational efficiency of site error on brshless DC motor and the impact of noise of Hall element, and the present invention can also effectively improve the yields that single-phase brushless direct-current motor is produced, thereby reduces the production cost of motor.
Description
Technical field
The present invention relates to a kind of drive system, specifically refer to a kind of thoughts brshless DC motor driving method.
Background technology
Brushless direct current motor (hereinafter to be referred as motor) is because the cost of its motor and driver is lower, and structure comparativelyThe feature such as simple and be used in widely the field such as cooling electric fan and the draining pump of washing machine such as computer. In realityIn use procedure, this class monophase machine adopts Hall unit to be used as the sensor of motor rotor position conventionally, with according to rotorPosition produces the needed control signal of switch current.
In order to ensure the accuracy of its control signal, these Hall units must be arranged on rotor accurately, reliablyNear of magnet steel, to guarantee that Hall element can detect the changes of magnetic field of rotor magnetic steel accurately, reliably. If Hall unitThere is deviation in position, the efficiency of motor not only can decline, and can increase the operation noise of motor. People are in order to fall at presentLow cost, many single-phase brushless direct-current motors cannot adopt complicated Hall element securing member. In addition, because production process is necessarySimplify, cannot test the positional precision of hall device in process of production, these factors unavoidably cause motorThere is deviation in Hall element position, has reduced motor production qualification rate; In addition, because the Hall unit of motor is passing through motor oneAfter the operation of section time, often also can there are some skews because of reasons such as vibrations in its position, also can reduce the efficiency of motorWith the noise that increases motor.
Summary of the invention
The object of the invention is to overcome current brushless direct current motor and produce position because a variety of causes causes its Hall elementOffset is poor, thereby causes the defect that motor production qualification rate declines and noise increases, and provides one can thoroughly solve above lackingSunken thoughts brshless DC motor driving method.
The present invention is achieved through the following technical solutions: a kind of thoughts brshless DC motor driving method, mainly comprise withLower step:
(1) start after power supply, system enters thoughts electric motor starting pattern automatically, then by the operation of thoughts drive pattern;
(2) system is according to the calculated signals motor speed n of Hall element;
(3) judge whether this motor speed n is greater than predetermined " thoughts " and drives the threshold rotating speed that is transformed into " noninductive " drivingna?
(4) if motor speed n > threshold rotation speed na, system is switched to noninductive drive pattern, and execution step (5), noSystem determines whether and continues operation according to the operation control signal of input; Continue to carry out if judge, system reentersThoughts drive pattern, otherwise system is out of service;
(5) system is calculated motor speed n according to motor position signal;
(6) judge whether motor speed n is greater than predetermined " noninductive " and drives the threshold rotation speed n that is transformed into " thoughts " drivingb？
(7) if motor speed n > nb, system continues to move under noninductive drive pattern; If n ￡ is nb, according to operation shapeState control signal again determines whether and continues operation, is that system is returned to step (1) and reentered thoughts drive pattern, otherwise isUnite out of service.
Wherein, " system is switched to noninductive drive pattern " described in step (4), specifically comprises the following steps:
(41) utilize the detection of thoughts position signalling or the zero crossing to back-emf, calculate motor speed and drive frequentlyRate, and by the width in the electrical angle generation lower half Dai electricity district in default steady-state operation Dai electricity district;
(42) do you judge that half cycle frequency is greater than the frequency of default minimum speed?
(43) be, detect the zero crossing of negative half period or positive half cycle back-emf, calculate its frequency, and by default stable state fortuneThe electrical angle in Hang Dai electricity district generates the width in lower half Dai electricity district; No, system is out of service;
(44) do you judge that half cycle frequency is greater than the frequency of default minimum speed? to return to step (41); No, beUnite out of service.
" calculating motor driving frequency " described in step (41) and step (43) refers to according to formula and calculates positive half cycleOr the electric voltage frequency of negative half period back-emf, wherein, tnewFor the time of the rotor-position that just detected, toldFor tnewBeforeThe upper time that rotor-position detects.
Described in step (41) and step (43), " and generate second by the electrical angle in default steady-state operation Dai electricity districtThe width in Zhou Dai electricity district " according to formula THC/（180°/βSurely) calculate, wherein, βSurelyFor default steady-state operation Dai electricity districtElectrical angle, THCFor the time span of this half period.
In order to ensure result of use, the span of the width in the lower half Dai electricity district generating is 5 °～90 ° electrical angles,And " thoughts " described in step (1) drive and are transformed into the threshold rotation speed n that " noninductive " drivesaBeing greater than " noninductive " driving is transformed intoThe threshold rotation speed n that " thoughts " driveb。
A kind of thoughts brshless DC motor driving method, mainly comprises the following steps:
(1) start after power supply, system enters thoughts electric motor starting pattern automatically, then by the operation of thoughts drive pattern;
(2) system is according to the calculated signals motor speed n of Hall element, and is recorded under thoughts drive pattern stateThe number of turns N of rotor;
(3) judge the Duty ratio control voltage u of PWMpwmWhether exceed and default be driven into " noninductive " from " thoughts " and driveConversion threshold voltage ua, and the number of turns N rotating under thoughts drive pattern when motor exceedes default value Na, proceed to stepSuddenly (4); If number of turns N < default value Na, and control signal requires to continue operation, the thoughts that return to step (1) drive; IfControl signal requires to stop, and driving process stops;
(4) system enters noninductive drive pattern, and calculates motor speed n according to the position signalling of rotor;
(5) in noninductive driving process, if upwmHigher than the default noninductive threshold conversion electricity that is driven into thoughts drivingPress ub, system continues to move under noninductive drive pattern; If upwmLower than the default noninductive threshold that is driven into thoughts drivingChanging voltage ub, and control signal requires to continue operation, and the thoughts that proceed to step (1) drive, otherwise system is out of service.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) the present invention not only can effectively reduce the site error of Hall element to the operational efficiency of brshless DC motorWith the impact of noise, but also can effectively improve the yields that brshless DC motor is produced, thereby reduce being produced into of motorThis;
(2) the present invention adopts the running current of optimization, can in the operational efficiency that improves brshless DC motor, fallThe operation noise of low motor, can also reduce the impact of the site error of Hall element simultaneously, and the present invention can improve brushlessThe reliability of direct current generator;
(3) the present invention can carry out automatically according to external condition after starting between thoughts drive pattern and noninductive drive patternSwitch, thereby automatically adjust motor operating state.
Brief description of the drawings
Fig. 1 is integrated circuit structural representation of the present invention;
Fig. 2 is the output waveform of Hall element and the counter potential waveform of armature winding while correctly Hall element being installedBe related to schematic diagram;
Fig. 3 is the anti-of the output waveform of the Hall element of the installation position of Hall element while being equipped with deviation and armature windingPotential waveform be related to schematic diagram;
Fig. 4 is the implementation of the conversion between thoughts of the present invention and noninductive drive pattern while judging based on motor speedFlow chart;
Fig. 5 is the flow chart of system at noninductive drive pattern;
Fig. 6 is system testing circuit of the present invention;
Fig. 7 is conversion between thoughts of the present invention and noninductive drive pattern when PWM dutycycle voltage is judgedImplementation flow chart;
Fig. 8 is that the duty-cycle of PWM is 100% voltage oscillogram;
Fig. 9 is that the duty-cycle of PWM is 50% voltage oscillogram.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Thoughts drive, its for full name be the abbreviation of " with the driving of hall position sensor ", and " noninductive driving " is completeTitle is the abbreviation of " without the driving of hall position sensor ".
Embodiment 1
As shown in Fig. 1～6, drive system of the present invention is by the single-phase drive axle connection group of coil and a H type of motorBecome, wherein the single-phase drive axle of this H type is by FET MOT1, FET MOT2, FET MOT3 and FET MOT4Common composition, FET MOT1 and FET MOT3 are in series, and FET MOT2 and FET MOT4 are in series,The drain D of FET MOT1 and FET MOT2 is connected with input voltage Vdd jointly, FET MOT3 and fieldThe source S of effect pipe MOT4 connects rear ground connection. The bridge contact (being tie point) of FET MOT1 and FET MOT3 withThe bridge contact (being tie point) of FET MOT2 and FET MOT4 respectively with two of the armature winding of claw electrode synchronization electromotorIndividual port MOT_A is connected with MOT_B.
If Hall element is installed correct, it can send and control 4 according to the polarity of back-emf (back-emf)The conducting of MOSFET pipe and disconnection, make the winding of motor when its back-emf is positive, and MOSFET manages Mot_AHWith Mot_BL conducting and Mot_BH&Mot_AL turn-off, to make the electric current of winding as forward; When back-emf is while being negativeWait, MOSFET pipe Mot_AH and Mot_BL turn-off and Mot_BH&Mot_AL conducting, to make the electric current of winding as negativeTo. The electromagnetic torque that electric current produces that can ensure like this to flow into coil be always on the occasion of, motor is rotated in the forward, its output signalAnd relation between the back-emf of motor winding detects voltage waveform as shown in Figure 2 as schemed it.
There is no phase difference between the two. In this case, the signal that Hall element produces can allow MOSFET manageMot_AH and Mot_BL are by only conducting when back-EMF is positive. Now, drive current is by the port of armature windingMot_A flows to and is flowed out by Mot_B. When back-emf is when negative, the signal that Hall element produces can allow MOSFET pipeMot_AL and Mot_BH conducting, and drive current is flow to and is flowed out by Mot_A by port Mot_B. Rely on such driving sideFormula, the electric current of forward makes electromagnetic torque that motor produces in any sub-position all the time with the back-emf effect of forwardBe forward, thereby rotor can be by the forward electromagnetic torque institute Continuous Drive of motor.
If there is deviation the position of Hall element in motor, have part forward electric current can with the back-of negative senseEmf effect, and have part negative sense electric current can with the back-emf effect of forward, produce negative torque. At motor forwardIf there is once in a while the torque of negative sense when rotation, can make deterioration of efficiency, vibration and the noise of motor increase. Now, passThe signal of sending of sensor as shown in Figure 3, at this time has phase difference between the output signal of Hall element and back-emf.In such cases, the electromagnetism that the electric current that MOSFET pipe produces in armature winding can produce in componental movement region negative sense turnsSquare. In the time that the average of forward electromagnetic torque is greater than the average of negative sense torque, rotor still can be rotated in the forward, but negative sense electromagnetismThe existence of torque increases the loss of motor and noise.
In the time that rotor-position can be detected exactly, in order to produce forward torque, MOSFET pipe Mot_AH andMot_BL is by only conducting when back-EMF is positive. Now, drive current flow to by the port Mot_A of armature winding andFlowed out by Mot_B. When back-emf is when negative, now, MOSFET pipe Mot_AL and Mot_BH conducting, and drive current byPort Mot_B flows to and is flowed out by Mot_A. Rely on such type of drive, no matter the electric current in armature winding is for just alsoBe negative, the torque that motor produces is positive forever. And, can pass through the judgement of the value to back-emf various piece, canGuarantee that drive current is optimal current.
Back-emf changes and can obtain from its zero crossing (zerocrossingpoint is called for short ZCP). The present invention adoptsDetect the situation of back-emf by this technology. Fig. 6 has shown the circuit diagram of realizing this technology. Adopt comparator to obtainObtain the information of back-emf change in polarity. Can detect back-emf of short duration during, all MOSFET pipes inOff state. Now the voltage signal of armature winding port is the signal of back-emf. Therefore, in the machine operation phaseBetween, motor works in respectively " Dai electricity district " and " driving district ", and near ZCP generation area, drive operation is entered in " Dai electricity district "The position of row motor and the polarity of back-emf detect. After the polarity discriminating of back-emf is known, machine operation is in " drivingDistrict " to produce driving torque. Because the value of back-emf in " Dai electricity district " is less, and this interval is shorter, and Dai electricity district existsImpact on motor torque is less.
Adopt the present invention, the span of the width in the lower half Dai electricity district generating is 5 °～90 ° electrical angles, but itGood width span is the scope of 5 °～30 ° of electrical angles. Adopt after this noninductive technology, the commutation of drive circuit is by turningSub-determining positions, therefore power frequency is to be determined by the load of motor. In the time that load is larger, motor speed is slower,The switching frequency of electric current is just lower.
Aforementioned single-phase noninductive drive scheme is very effective in the normal operation of motor, but at electric motor starting and low cruiseTime have problem because now the back-emf of motor is very low, ZCP cannot be detected, and also just cannot realize motorSensorless drive. Therefore at electric motor starting and low cruise and in back-emf cannot be detected effectively, thisBright still consideration adopts traditional operating scheme that has sensor.
Technical scheme of the present invention is not only effective to monophase machine, and three phase electric machine and other polyphase machines are also had equallyEffect. Use time of the present invention, the driving of motor is made up of two links, and thoughts drive and noninductive driving, and it is concreteFlow process is as follows:
(1) start after power supply, system enters thoughts electric motor starting pattern automatically, then by the operation of thoughts drive pattern;
(2) system is according to the calculated signals motor speed n of Hall element;
(3) judge whether this motor speed n is greater than predetermined " thoughts " and drives the threshold rotating speed that is transformed into " noninductive " drivingna?；
(4) if motor speed n > threshold rotation speed na, system is switched to noninductive drive pattern, and execution step (5), noSystem determines whether and continues operation according to the operation control signal of input; Continue to carry out if judge, system reentersThoughts drive pattern, otherwise system is out of service;
(5) system is calculated motor speed n according to motor position signal;
(6) judge whether motor speed n is greater than predetermined " noninductive " and drives the threshold rotation speed n that is transformed into " thoughts " drivingb？In actual setting up procedure, this threshold rotation speed nbBe less than threshold rotation speed naRotating speed;
(7) if motor speed n > nb, system continues to move under noninductive drive pattern; If n ￡ is nb, according to operation shapeState control signal again determines whether and continues operation, is that system is returned to step (1) and reentered thoughts drive pattern, otherwise isUnite out of service.
In the time that reality is used, described " thoughts " drive and are transformed into the threshold rotation speed n that " noninductive " drivesaBeing greater than " noninductive " drivesThe moving threshold rotation speed n that is transformed into " thoughts " drivingb. And described " system is switched to noninductive drive pattern " specifically comprises followingStep:
(41) utilize the detection of thoughts position signalling or the zero crossing to back-emf, calculate motor speed and drive frequentlyRate, and by the width in the electrical angle generation lower half Dai electricity district in default steady-state operation Dai electricity district;
(42) do you judge that half cycle frequency is greater than the frequency of default minimum speed?
(43) be, detect the zero crossing of negative half period or positive half cycle back-emf, calculate its frequency, and by default stable state fortuneThe electrical angle in Hang Dai electricity district generates the width in lower half Dai electricity district; No, system is out of service;
(44) do you judge that half cycle frequency is greater than the frequency of default minimum speed? to return to step (41); No, beUnite out of service.
Meanwhile, " the calculating motor driving frequency " described in step (41) and step (43) refers to according to formulaCalculate the electric voltage frequency of positive half cycle or negative half period back-emf, wherein, tnewFor the rotor just having detectedThe time of position, toldFor tnewThe upper time that rotor-position detects before.
Described in step (41) and step (43), " and generate second by the electrical angle in default steady-state operation Dai electricity districtThe width in Zhou Dai electricity district " according to formula THC/（180°/βSurely) calculate, wherein, βSurelyFor default steady-state operation Dai electricity districtElectrical angle, THCFor the time span of this half period.
Embodiment 2
Embodiment 1 judges the transfer process between thoughts of the present invention and noninductive drive pattern according to motor speed,The present embodiment is to judge the transfer process between thoughts and noninductive drive pattern according to PWM Duty ratio control voltage, realExecuting example 1 is with motor speed, start-up mode to be adjusted, and the present embodiment is to adjust with the control voltage of PWMWhole.
As shown in Fig. 7～9, Fig. 8, Fig. 9 have represented respectively driving in the time that the dutycycle that drives district PWM is 100% and 50%The waveform of moving voltage, with the drive current of such method formation be optimum naturally.
Its detailed process as shown in Figure 9, comprises the following steps:
(1) start after power supply, system enters thoughts electric motor starting pattern automatically, then by the operation of thoughts drive pattern;
(2) system is according to the calculated signals motor speed n of Hall element, and is recorded under thoughts drive pattern stateThe number of turns N of rotor;
(3) judge the Duty ratio control voltage u of PWMpwmWhether exceed and default be driven into " noninductive " from " thoughts " and driveConversion threshold voltage ua, and the number of turns N rotating under thoughts drive pattern when motor exceedes default value Na, proceed to stepSuddenly (4); If number of turns N < default value Na, and control signal requires to continue operation, the thoughts that return to step (1) drive; IfControl signal requires to stop, and driving process stops;
(4) system enters noninductive drive pattern, and calculates motor speed n according to the position signalling of rotor;
(5) in noninductive driving process, if upwmHigher than the default noninductive threshold conversion electricity that is driven into thoughts drivingPress ub, system continues to move under noninductive drive pattern; If upwmLower than the default noninductive threshold that is driven into thoughts drivingChanging voltage ub, and control signal requires to continue operation, and the thoughts that proceed to step (1) drive, otherwise system is out of service.In the time of actual motion, this threshold changing voltage ubBe less than threshold voltage ua。
As mentioned above, just can realize preferably the present invention.
Claims (7)
1. a thoughts brshless DC motor driving method, is characterized in that, mainly comprises the following steps:
(1) start after power supply, system enters thoughts electric motor starting pattern automatically, then by the operation of thoughts drive pattern;
(2) system is according to the calculated signals motor speed n of Hall element;
(3) judge whether this motor speed n is greater than predetermined thoughts and drives the threshold rotation speed n that is transformed into noninductive drivinga；
(4) if motor speed n > threshold rotation speed na, system is switched to noninductive drive pattern, and execution step (5), otherwise systemDetermine whether again and continue operation according to the operation control signal of input; Continue to carry out if judge, system reenters thoughts and drivesDynamic model formula, otherwise system is out of service;
(5) system is calculated motor speed n according to motor position signal;
(6) judge whether motor speed n is greater than predetermined noninductive driving and is transformed into the threshold rotation speed n that thoughts driveb；
(7) if motor speed n > nb, system continues to move under noninductive drive pattern; If n≤nb, according to running status controlSignal processed again determines whether and continues operation, be that system is returned to step (1) and reentered thoughts drive pattern, otherwise system is stoppedOnly operation.
2. a kind of thoughts brshless DC motor driving method according to claim 1, is characterized in that, institute in step (4)" system is switched to noninductive drive pattern " stated, specifically comprises the following steps:
(41) utilize the detection of thoughts position signalling or the zero crossing to back-emf, calculate motor speed and motor and drive frequentlyRate, and by the width in the electrical angle generation lower half Dai electricity district in default steady-state operation Dai electricity district;
(42) judge whether half cycle frequency is greater than the frequency of default minimum speed;
(43) be, detect the zero crossing of negative half period or positive half cycle back-emf, calculate motor driving frequency, and by default stable stateThe electrical angle in operation Dai electricity district generates the width in lower half Dai electricity district; No, system is out of service;
(44) judge whether half cycle frequency is greater than the frequency of default minimum speed; To return to step (41); No, system is stoppedOnly operation.
3. a kind of thoughts brshless DC motor driving method according to claim 2, is characterized in that, step (41) and stepSuddenly in (43), calculating motor driving frequency refers to according to formulaCalculate positive half cycle or negative half period back-emfElectric voltage frequency, wherein, tnewFor the time of the rotor-position that just detected, toldFor tnewUpper rotor-position inspection beforeThe time measuring.
4. a kind of thoughts brshless DC motor driving method according to claim 2, is characterized in that, step (41) and stepSuddenly " and by the width in the electrical angle generation lower half Dai electricity district in default steady-state operation Dai electricity district " root described in (43)According to formula THC/(180°/βSurely) calculate, wherein, βSurelyFor the electrical angle in default steady-state operation Dai electricity district, THCFor this half cycleThe time span of phase.
5. a kind of thoughts brshless DC motor driving method according to claim 4, is characterized in that second generationThe span of the width in Zhou Dai electricity district is 5 °～90 ° electrical angles.
6. a kind of thoughts brshless DC motor driving method according to claim 1, is characterized in that, institute in step (1)The thoughts of stating drive the threshold rotation speed n that is transformed into noninductive drivingaBe greater than noninductive driving and be transformed into the threshold rotation speed n that thoughts driveb。
7. a thoughts brshless DC motor driving method, is characterized in that, mainly comprises the following steps:
(1) start after power supply, system enters thoughts electric motor starting pattern automatically, then by the operation of thoughts drive pattern;
(2) system is according to the calculated signals motor speed n of Hall element, and is recorded in the rotor under thoughts drive pattern stateThe number of turns N of rotation;
(3) judge the Duty ratio control voltage u of PWMpwmWhether exceed the default conversion threshold that is driven into noninductive driving from thoughtsVoltage ua, and the number of turns N rotating under thoughts drive pattern when motor exceedes default value Na, proceed to step (4); If circleNumber N < default value Na, and control signal requires to continue operation, the thoughts that return to step (1) drive; If control signal is wantedAsk and stop, driving process stops;
(4) system enters noninductive drive pattern, and calculates motor speed n according to the position signalling of rotor;
(5) in noninductive driving process, if upwmHigher than the default noninductive threshold changing voltage u that is driven into thoughts drivingb,System continues to move under noninductive drive pattern; If upwmLower than the default noninductive threshold conversion electricity that is driven into thoughts drivingPress ub, and control signal requires to continue operation, and the thoughts that proceed to step (1) drive, otherwise system is out of service.
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| CN201210321206.5A CN103684120B (en) | 2012-09-03 | 2012-09-03 | A kind of thoughts brshless DC motor driving method |
| PCT/CN2013/076637 WO2014032446A1 (en) | 2012-09-03 | 2013-06-03 | Method for driving inductive brushless direct current motor |
| TW102123154A TW201412009A (en) | 2012-09-03 | 2013-06-28 | Method for driving inductive brushless direct current motor |
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| CN201210321206.5A CN103684120B (en) | 2012-09-03 | 2012-09-03 | A kind of thoughts brshless DC motor driving method |
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| TWI580173B (en) * | 2014-10-13 | 2017-04-21 | Sensorless motor control device and method thereof | |
| CN105929332B (en) * | 2016-06-20 | 2019-04-19 | 南京百邻悦科技服务有限公司 | The device and method of thoughts BLDCM Drive System built in a kind of detection |
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| CN107241035B (en) * | 2017-05-24 | 2019-08-09 | 北京控制工程研究所 | A kind of BLDCM Drive System with conducting ring failure tolerant function |
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| CN109905064B (en) * | 2017-12-08 | 2022-07-05 | 杭州海康机器人技术有限公司 | Method, device and equipment for determining electric angle of motor |
| CN107947647B (en) * | 2017-12-19 | 2024-03-12 | 深圳市创科维信电子有限公司 | Three-phase brushless motor driving circuit and control method thereof |
| TWI683530B (en) * | 2018-05-25 | 2020-01-21 | 茂達電子股份有限公司 | Motor driving circuit and method thereof |
| CN109510405B (en) * | 2018-11-21 | 2020-07-17 | 邵琪 | Non-inductive brushless motor and anti-stalling control method thereof |
| CN112994542B (en) * | 2021-04-29 | 2023-07-11 | 常州工业职业技术学院 | Brushless direct current motor noninductive control method based on commutation point commutation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2048131U (en) * | 1989-05-23 | 1989-11-22 | 王荣栓 | Dc electric fan |
| CN1742427A (en) * | 2003-01-24 | 2006-03-01 | 特库姆塞制品公司 | Brushless and sensorless DC motor control system with locked and stopped rotor detection |
| CN101505127A (en) * | 2008-03-20 | 2009-08-12 | 天津航天鑫茂稀土机电科技有限公司 | Method for enhancing position detection accuracy of permanent magnet brushless DC motor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7538505B2 (en) * | 2007-05-01 | 2009-05-26 | Alberkrack Jade H | Noise suppresion suppression for hall sensor arrangements |
| US8378606B2 (en) * | 2009-10-08 | 2013-02-19 | Microchip Technology Incorporated | Synchronized minimum frequency pulse width modulation drive for sensorless brushless direct current motor |
| TWI414803B (en) * | 2010-03-26 | 2013-11-11 | Ind Tech Res Inst | Device of and method for measuring the electromotive force constant of fan motors |
| US8436564B2 (en) * | 2010-09-01 | 2013-05-07 | Standard Microsystems Corporation | Natural commutation for three phase brushless direct current (BLDC) motors |
| TW201213828A (en) * | 2010-09-28 | 2012-04-01 | Metal Ind Res & Dev Ct | A Back-EMF measuring method for a multi-phase BLDC motor |
| CN202261162U (en) * | 2011-10-14 | 2012-05-30 | 峰岹科技（深圳）有限公司 | Claw-pole motor driving system and fan driving system applying same |
-
2012
- 2012-09-03 CN CN201210321206.5A patent/CN103684120B/en active Active
-
2013
- 2013-06-03 WO PCT/CN2013/076637 patent/WO2014032446A1/en active Application Filing
- 2013-06-28 TW TW102123154A patent/TW201412009A/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2048131U (en) * | 1989-05-23 | 1989-11-22 | 王荣栓 | Dc electric fan |
| CN1742427A (en) * | 2003-01-24 | 2006-03-01 | 特库姆塞制品公司 | Brushless and sensorless DC motor control system with locked and stopped rotor detection |
| CN101505127A (en) * | 2008-03-20 | 2009-08-12 | 天津航天鑫茂稀土机电科技有限公司 | Method for enhancing position detection accuracy of permanent magnet brushless DC motor |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201412009A (en) | 2014-03-16 |
| CN103684120A (en) | 2014-03-26 |
| TWI497900B (en) | 2015-08-21 |
| WO2014032446A1 (en) | 2014-03-06 |
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