CN103684131B - Detecting and controlling system - Google Patents
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- CN103684131B CN103684131B CN201210345661.9A CN201210345661A CN103684131B CN 103684131 B CN103684131 B CN 103684131B CN 201210345661 A CN201210345661 A CN 201210345661A CN 103684131 B CN103684131 B CN 103684131B
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Abstract
A kind of detecting and controlling system, comprise sensing cell, control module and driver module, be applied to the motor comprising rotor and stator, chip is arranged between rotor and stator.First magnetic pole of sensing cell sensing rotor and the second magnetic pole, through chip, are converted to the situation of the 4th magnetic pole with the 3rd magnetic pole of stator, use generation sensing signal.The detecting unit of control module detects the Kickback voltage value that the first current value is converted to the second current value, uses calculating current minimum and produces detection signal.Timing unit receive sensing and detection signal and calculated, discharge time that so far time and the first current value are discharged to minimum current value.Control unit is converted to the change-over time of the 4th magnetic pole according to the very first time, the second time and discharge time controlling the 3rd magnetic pole and produces control signal, driver module reception control signal and drive rotor turns.
Description
Technical field
The present invention relates to a kind of detecting and controlling system, particularly relate to one and utilize voltage recoil value calculating current minimum, use the detecting and controlling system controlling moyor.
Background technology
Along with the development in epoch, the industrial revolution brings the change of people's century property, more overturn people's life pattern in the past, wherein with the invention of motor known by people, existing motor is applied in air-conditioning, the vehicles and various household electrical appliances mostly, also because various field is contained in the application of motor, therefore people are in the solution and performance goodization of motor, dropped into sizable research and development and research.But although industry personnel have dropped into considerable development resources and improved now, existing motor has still had part problem to be modified.
Refer to Fig. 1 to Figure 1B, Fig. 1 to 1 figure B shows the revolution schematic diagram of prior art.As shown in the figure, motor 1 comprises rotor 11 and a stator 12, rotor 11 comprise in 2 first magnetic pole 111(figure only indicate one) and 2 second magnetic pole 112(figure in only indicate one), wherein, first magnetic pole 111 is N pole, and the second magnetic pole 112 is S pole.Stator 12 comprise in 2 the 3rd magnetic pole 121(figure only indicate one) and 2 the 4th magnetic pole 122(figure in only indicate one), wherein, the 3rd magnetic pole 121 is S pole, and the 4th magnetic pole 122 is N pole.In addition, chip 2 is arranged between rotor 11 and stator 12, the rotating speed that the rotor 11 in order to sense when motor 1 operates rotates, and chip 2 is Hall (Hall) chip.
Wherein, when motor 1 starts to rotate along direction of rotation L1, rotor 11 rotates in a clockwise direction, first magnetic pole 111 and the second magnetic pole 112 are that position as shown in Figure 1 turns to the position shown in Figure 1A, and the 3rd magnetic pole 121 of stator 12 and the 4th magnetic pole 122 are not changed yet, therefore, can produce at the second magnetic pole 122 rotation that wrong moment direction L2 and L3 affects rotor 11, and then cause the unnecessary vibrations of motor 1 and have the generation of noise.Then, when first magnetic pole 111 and the second magnetic pole 112 turn to the position shown in Figure 1B by the position shown in Figure 1A again, 3rd magnetic pole 121 of stator 12 just converts the 3rd magnetic pole 121a to, and the 4th magnetic pole 122 just converts the 4th magnetic pole 122a to, and then causes motor 1 efficiency not good.In addition, in another case, the 3rd magnetic pole 121 of stator 12 is convert the 3rd magnetic pole 121a in advance to, and then the moment that makes the mistake, and the efficiency of motor 1 can be made equally not good.
In sum, believe every have in the art usually know that the knowledgeable should be understood that in prior art, rotor 11 due to motor 1 rotates and makes the first magnetic pole 111 and the second magnetic pole 112 when chip 2,3rd magnetic pole 121 of stator 12 and the 4th magnetic pole 122 can be changed in advance or fall behind conversion, thus existing motor 1 is made can to produce unnecessary vibrations, and have unnecessary noise to produce and the inapparent problem of efficiency, it is therefore existing that how to control the state that motor 1 remains on better efficiency be the problem of industry institute for solution.
Summary of the invention
The present invention for solve technical problem and object:
Because in the prior art, rotor turns due to motor makes the first magnetic pole and the second magnetic pole through chip, 3rd magnetic pole of stator and the 4th magnetic pole in advance or can fall behind conversion, thus make existing motor can produce unnecessary vibrations, and have unnecessary noise to produce and the inapparent problem of efficiency.
Edge this, main purpose of the present invention is to provide a kind of detecting and controlling system, when it mainly utilizes the first current value corresponding to detection the 3rd magnetic pole to be converted to the second current value corresponding to the 4th magnetic pole, the Kickback voltage value produced, use according to Kickback voltage value calculating current minimum, and then control the change-over time that the 3rd magnetic pole is converted to the 4th magnetic pole.
The technological means that the present invention deals with problems:
The present invention is the problem solving prior art, the necessary technology means adopted are to provide a kind of detecting and controlling system, be applied to a motor, and motor comprises a rotor and a stator, rotor comprises at least one first magnetic pole and at least one second magnetic pole, and a chip is arranged between rotor and stator, during rotor turns, first magnetic pole with a very first time and the second magnetic pole with one second time through chip, and 1 of stator the 3rd magnetic pole is synchronously converted to one the 4th magnetic pole and has a change-over time, detection system comprises a sensing cell, one control module and a driver module.
Sensing cell is electrically connected at motor, and in order to sense the first magnetic pole and the second magnetic pole through chip, and the 3rd magnetic pole is converted to the situation of the 4th magnetic pole, uses and produces and transmit a sensing signal.Control module is electrically connected at sensing cell, and comprise a detecting unit, a timing unit and a control unit, detecting unit is electrically connected at sensing cell, when being converted to second current value corresponding to the 4th magnetic pole in order to one first current value detected corresponding to the 3rd magnetic pole, recoil (kickback) magnitude of voltage produced, use and calculate a minimum current value according to Kickback voltage value, produce a detection signal according to this.Timing unit is electrically connected at sensing cell and detecting unit, in order to receive sensing signal and detection signal, uses and calculates the very first time and the second time, and calculate the discharge time that the first current value is discharged to minimum current value.Control unit is electrically connected at motor and timing unit, in order to according to the very first time, the second time and discharge time controlling change-over time, using and produces and transmit a control signal.Driver module, between motor and control unit, is electrically connected at motor and control unit, in order to reception control signal, uses driving rotor turns.
Preferably, in above-mentioned detecting and controlling system, motor is single line brush DC (BrushlessDC; BLDC) motor, and chip is Hall (Hall) sensing element, and chip can be arranged at rotor.In addition, detecting unit, control unit and drive module setting are in chip, and detecting unit can be arranged at rotor or stator, and chip is arranged at adjacent stator part.In addition, detecting and controlling system also comprises a storage element, and storage element is electrically connected at timing unit, in order to store the very first time, the second time, discharge time and change-over time.
In addition, preferably, in above-mentioned detecting and controlling system, minimum current value is that the 0, first magnetic pole is different from the second magnetic pole, and the 3rd magnetic pole is different from the 4th magnetic pole, and the first magnetic pole, the second magnetic pole, the 3rd magnetic pole and the 4th magnetic pole system N pole or S pole.In addition, detecting unit also comprises a voltage comparator, and voltage comparator is provided with a threshold value, and threshold value, in order to compare with Kickback voltage value, uses calculating current minimum.In addition, when the 3rd magnetic pole is converted to the 4th magnetic pole, after the first current value system is discharged to minimum current value, recharge to the second current value.And control unit controls the first current value is converted to the speed of the second current value and controls change-over time.
The present invention's effect against existing technologies:
Compared to prior art, rotor turns due to motor makes the first magnetic pole and the second magnetic pole through chip, 3rd magnetic pole of stator and the 4th magnetic pole in advance or can fall behind conversion, thus make existing motor have unnecessary noise to produce and the inapparent problem of efficiency because of unnecessary vibrations.
Edge this, in detecting and controlling system provided by the present invention, it is when utilizing the first current value corresponding to detection the 3rd magnetic pole to be converted to the second current value corresponding to the 4th magnetic pole, the Kickback voltage value produced, use and calculate a minimum current value according to Kickback voltage value, and then be converted to the change-over time of the 4th magnetic pole according to control the 3rd magnetic pole.
Therefore, utilize detecting and controlling system provided by the present invention, due to the Kickback voltage value produced when the first current value is converted to the second current value can be detected, and system can calculate minimum current value according to Kickback voltage value, and then the discharge time of minimum current value is discharged to according to the first current value, control the change-over time that the 3rd magnetic pole is converted to the 4th magnetic pole, that is advanced phase can be controlled or delay phase transition, and then the efficiency of optimization motor.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Accompanying drawing explanation
Fig. 1 to Figure 1B shows the revolution schematic diagram of prior art;
The detecting and controlling system that Fig. 2 shows present pre-ferred embodiments is applied to the block diagram of motor;
The Kickback voltage that Fig. 3 to Fig. 3 C shows present pre-ferred embodiments forms schematic diagram;
The detecting and controlling system that Fig. 4 shows present pre-ferred embodiments is applied to the first waveform schematic diagram of motor;
The detecting and controlling system that Fig. 5 shows present pre-ferred embodiments is applied to the second waveform schematic diagram of motor; And
Fig. 6 to Fig. 6 B shows the rotation schematic diagram that present pre-ferred embodiments is applied to motor.
Wherein, Reference numeral
1 motor
11 rotors
111 first magnetic poles
112 second magnetic poles
12 stators
121,121a the 3rd magnetic pole
2 chips
3 detecting and controlling system
31 sensing cells
32 control modules
321 detecting units
3211 voltage comparators
322 timing units
323 control units
324 storage elements
33 driver modules
4 motors
41 rotors
411 first magnetic poles
412 second magnetic poles
42,42a, 42b stator
421,421a, 421b the 3rd magnetic pole
5 chips
A is interval
B is interval
C electric current minimum point
D is interval
E is interval
L1 direction of rotation
L2, L3 moment direction
L4, L5, L6 sense of current
L7 direction of rotation
S1 sensing signal
S2 detection signal
S3 control signal
Embodiment
Due in detecting and controlling system provided by the present invention, its combination execution mode is too numerous to enumerate, therefore this is no longer going to repeat them, only enumerates preferred embodiment and illustrated.
Refer to Fig. 2, the detecting and controlling system that Fig. 2 shows present pre-ferred embodiments is applied to the block diagram of motor.As shown in Figure 2, in detecting and controlling system 3 provided by the present invention, be applied to a motor 4, and motor 4 comprises rotor 41 and a stator 42, and rotor 41 comprise in 2 first magnetic pole 411(figure only indicate one) and 2 second magnetic pole 412(figure in only indicate one), first magnetic pole 411 is different from the second magnetic pole 412, and the first magnetic pole 411 is N pole, second magnetic pole 412 is S pole, and a chip 5 is arranged between rotor 41 and stator 42, and in other embodiments, chip 5 is arranged at adjacent stator 42 part, in addition, in present pre-ferred embodiments, stator 42 is not permanent magnetism, hereby chat bright.Wherein, in present pre-ferred embodiments, motor 4 is single line brush DC (BrushlessDC; BLDC) motor, chip 5 is arranged at stator 42 45 degree of angle parts, also furthermore, above-mentioned 45 degree of angle parts are that stator 42 does not have magnetic field part (namely not by the influence of magnetic field part of magnetic pole), and chip 5 is Hall (Hall) sensing element, in addition, in other embodiments, chip 5 can be arranged on rotor 41 or all the other adjacent stator 42 parts (comprise and have electric field influence part).In addition, it is worth mentioning that, motor 4 is identical with the motor 1 of prior art, and chip 5 is identical with the chip 2 of prior art, and present pre-ferred embodiments distinguishes with label difference, hereby chats bright.
Detecting and controlling system 3 comprises sensing cell 31, control module 32 and a driver module 33, and sensing cell 31 is electrically connected at motor 4.Control module 32 is electrically connected at sensing cell 31, and comprise detecting unit 321, timing unit 322, control unit 323 and a storage element 324.Detecting unit 321 is electrically connected at sensing cell 31, and comprise a voltage comparator 3211, and voltage comparator 3211 is provided with a threshold value.Timing unit 322 is electrically connected at sensing cell 31 and detecting unit 321, and control unit 323 is electrically connected at timing unit 322, and storage element 324 is electrically connected at timing unit 322.In addition, in other embodiments, sensing cell 31 can be integrated in control module 32, and in other embodiments, detecting unit 321 to be arranged at rotor 41 or stator 42.Driver module 33 is between motor 4 and control unit 323, is electrically connected at motor 4 and control unit 323.In addition, in other embodiments, detecting unit 321, control unit 323 and driver module 33 arrange and be integrated in chip 5.
See also Fig. 2 to Fig. 5, the Kickback voltage that Fig. 3 to Fig. 3 C shows present pre-ferred embodiments forms schematic diagram, the detecting and controlling system that Fig. 4 shows present pre-ferred embodiments is applied to the first waveform schematic diagram of motor, and the detecting and controlling system that Fig. 5 shows present pre-ferred embodiments is applied to the second waveform schematic diagram of motor.
As shown in the figure, when rotor 41 rotates, first magnetic pole 411 is with a very first time and the second magnetic pole 412 is through chip 5 with one second time, and 1 of stator 42 the 3rd magnetic pole 421 is synchronously converted to one the 4th magnetic pole and has a change-over time, and rotating speed when the synchronous detection rotor 41 of chip 5 meeting rotates.Wherein, it is worth mentioning that, the 3rd magnetic pole 421 is different from the 4th magnetic pole, and the 3rd magnetic pole 421 is S pole, and the 4th magnetic pole is N pole.That is, the first magnetic pole 411 is with a very first time and the second magnetic pole 412 is that the 3rd magnetic pole 421 is the N pole being converted to the 4th magnetic pole from S pole with one second time when the chip 5.
And when rotor 41 rotates, sensing cell 31 is in order to sense the first magnetic pole 411 and the second magnetic pole 412 through chip 5, and the 3rd magnetic pole 421 be converted to the situation of the 4th magnetic pole, use and produce and transmit a sensing signal S1, more particularly, sensing cell 31 senses the changes of magnetic field produced when rotor 41 rotates, and uses and produce sensing signal S1.When detecting unit 321 is converted to second current value corresponding to the 4th magnetic pole in order to one first current value detected corresponding to the 3rd magnetic pole 421, recoil (kickback) magnitude of voltage produced, use and calculate a minimum current value according to Kickback voltage value, produce a detection signal S2 according to this, in addition, the threshold value that voltage comparator 3211 is provided with, it is in order to compare with Kickback voltage value, uses calculating current minimum.In addition, in present pre-ferred embodiments, minimum current value is 0, and when the 3rd magnetic pole 421 is converted to the 4th magnetic pole, the first current value is after being discharged to minimum current value, recharges to the second current value.
More particularly, rotor 41 is when rotating, control unit 323 controls stator 42 and carries out reversal of magnetism (namely the 3rd magnetic pole 421 is converted to the 4th magnetic pole) to reach the effect utilizing driver module 33 to drive the lasting rotation of rotor 41, further, in the process of reversal of magnetism, the bridge switch that control unit 323 controls bridge circuit (H-bridge) on stator 42 is done to switch, it is switched to " on " by switch M1 and M4 of Fig. 3, and switch M2 and M3 switches to " off ", the electric current making it produce flows with the sense of current L4 of such as Fig. 3, and sense of current L4 flows into earth terminal via the inductance element of centre, use and discharge, wherein, aforesaid inductance element formed by the coil in Fig. 2 stator 42.
And when the 3rd magnetic pole 421 will be converted to the 4th magnetic pole, bridge switch is done to switch by control unit 323, it switches to as shown in Figure 3A by bridge switch, switch M2 and M4 is " on ", switch M1 and M3 is " off ", and inductance still has remaining electric current, therefore base stage can be utilized to discharge and the leakage current of forming section, and flow with the sense of current L5 shown in Fig. 3 A, the generation (interval A as shown in Figure 4) of above-mentioned Kickback voltage value is now had at output 1 place, and its discharge curve is rendered as index (exponential) type curve (" inductive current " as shown in Figure 4, and be absolute value), more particularly, above-mentioned Kickback voltage is in the coil due to stator 42, when bridge switch switches, still residual on the inductance of coil have a large amount of electric currents, thus while bridge switch switches, have leakage current flow out and make can measure a voltage in output 1, and this voltage is above-mentioned Kickback voltage.In addition, namely detecting unit 321 is detect above-mentioned Kickback voltage value, and compare with the threshold value (Vth shown in Fig. 4) that voltage comparator 3211 is provided with, and in present pre-ferred embodiments, threshold value is that being selected from close to voltage is 0 part, that is represents that electric current is close to 0 part, and then calculates minimum current value, and for convenience of description, the current absolute value minimum of this preferred embodiment is 0.
When the current discharge on inductance is complete, inductive current is the situation produced as shown in Figure 3 B for 0, switch M1, M2 and M4 switch to " off ", switch M3 switches to " on ", then when the 3rd magnetic pole 421 is converted to the 4th magnetic pole, bridge switch is done to switch by control unit 323, and then make it switch to situation as shown in Figure 3 C, switch M2 and M3 is " on ", and switch M1 and M4 is " off ", make electric current be flow with the sense of current L6 shown in Fig. 3 C, thus complete magnetic pole conversion.In like manner, the situation that 4th magnetic pole is converted to the 3rd magnetic pole 421 is similar to above-mentioned, only being that above-mentioned Kickback voltage value is is negative pressure recoil, and the 4th magnetic pole to be converted to the Kickback voltage that the 3rd magnetic pole 421 produces be malleation recoil, all the other operations are all same as described above, no longer repeated, that is at this, the present invention can detect the recoil of above-mentioned malleation and negative pressure recoil, and then judges the commutation time of motor and can control magnetic pole change-over time.In addition, the oscillogram shown in above-mentioned Fig. 4 to represent by Fig. 5, and use clear display situation of the present invention, wherein, above-mentioned minimum current value is the electric current minimum point C shown in Fig. 5.
And after sensing cell 31 has sensed and detecting unit 321 has detected, the sensing signal S1 that it produces and detection signal S2 is sent to timing unit 322, after timing unit 322 receives sensing signal S1 and detection signal S2, be calculate the above-mentioned very first time and the second time, and calculate the discharge time that the first current value is discharged to minimum current value (interval B of " inductive current " as shown in Figure 4).
The very first time that control unit 323 calculates according to timing unit 322, second time and discharge time control change-over time, more particularly, it is that control first current value is converted to the speed of the second current value and controls change-over time, and in present pre-ferred embodiments, it produces and transmits control signal S3(NO control signal as shown in Figure 4 and SO control signal) to driver module 33, driver module 33 is made to control according to control signal S3 the speed that the first current value is converted to the second current value, interval D such as shown in Fig. 5 and interval E, it represents that control signal S3 is in leading phase mode, control the first current value and be converted to the second current value, more particularly, driver module 33 converts magnetic pole according to control signal S3 to the coil current given on stator 42, use and drive rotor 41 to rotate.
The very first time that storage element 324 calculates in order to store timing unit 322, second time, discharge time and change-over time, and synchronous timing " time " figure produced as shown in Figure 5, more particularly, timing unit 322 can calculate further and note down the time of motor 4 translate phase, on inductance, the first current value is discharged to the time that time of minimum current value and Kickback voltage produce, use and produce timing " time " figure shown in Fig. 5, that is, the detecting and controlling system 3 that this preferred embodiment provides continues sensing, detect and control the functioning condition of motor 4, use and make that chip 5 is sustainable is positioned over stator 12b 45 degree of angle parts, wherein, in present pre-ferred embodiments, the definition at stator 12b 45 degree of angles is that coil is four direction (namely up and down), it is right coil and the centerline (namely becoming 45 degree of angles with right coil) of upper coil.
In addition, it is worth mentioning that, in other embodiments, control unit 323 can utilize input pulse width modulation (PulseWidthModulation; PWM) signal, switches with leading phase or the state falling behind phase place and controls stator 42 is converted to the 4th magnetic pole speed by the 3rd magnetic pole 421.And in other embodiments, also have multiple switching mode, no longer repeated at this.
In addition, see also Fig. 6 to Fig. 6 B, Fig. 6 to Fig. 6 B shows the rotation schematic diagram that present pre-ferred embodiments is applied to motor.As shown in Figure 6, after present pre-ferred embodiments being applied to motor 4, start to rotate rear (as shown in Figure 6) with direction of rotation L7 at rotor 41, when the first magnetic pole 411 and the second magnetic pole 412 position as shown in Figure 6 turn to the position shown in Fig. 6 A, the 3rd magnetic pole 421a of stator 42a namely advanced phase carry out changing (as shown in Figure 6A), the 3rd magnetic pole 421a electric current is made not have magnetic pole (i.e. state shown in Fig. 3 B) for 0, then when rotor 41 is rotated further with direction of rotation L7, 3rd magnetic pole 421a completes and switches and be converted to the 3rd magnetic pole 421b(as shown in Figure 6B), can not vicious moment produce when motor 4 is rotated.
Comprehensive the above, compared to prior art, utilize detecting and controlling system 3 provided by the present invention, due to the Kickback voltage value produced when the first current value is converted to the second current value can be detected, and minimum current value can be calculated according to Kickback voltage value, and then the discharge time of minimum current value is discharged to according to the first current value, control the change-over time that the 3rd magnetic pole 421 is converted to the 4th magnetic pole, and then control stator 42 advanced phase or delay phase transition, and then make the efficiency optimization of motor 4, and chip 5 is sustainable is positioned over stator 42 45 degree of angle parts, and then do not need the placement location also changing chip 5 at any time.
Certainly; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection range that all should belong to the claim appended by the present invention.
Claims (10)
1. a detecting and controlling system, be applied to a motor, and this motor comprises a rotor and a stator, this rotor comprises at least one first magnetic pole and at least one second magnetic pole, and a chip is arranged between this rotor and this stator, during this rotor turns, this first magnetic pole is with a very first time and this second magnetic pole passes through this chip with one second time, and 1 of this stator the 3rd magnetic pole is synchronously converted to one the 4th magnetic pole and has a change-over time, it is characterized in that, this detecting and controlling system comprises:
One sensing cell, is electrically connected at this motor, and in order to sense this first magnetic pole and this chip of this second magnetic pole process, and the 3rd magnetic pole is converted to the situation of the 4th magnetic pole, uses and produces and transmit a sensing signal;
One control module, is electrically connected at this sensing cell, comprises:
One detecting unit, be electrically connected at this sensing cell, when being converted to second current value corresponding to the 4th magnetic pole in order to one first current value detected corresponding to the 3rd magnetic pole, the Kickback voltage value produced, use and calculate a minimum current value according to this Kickback voltage value, produce a detection signal according to this;
One timing unit, be electrically connected at this sensing cell and this detecting unit, in order to receive this sensing signal and this detection signal, use and calculate this very first time and this second time, and calculate the discharge time that this first current value is discharged to this minimum current value; And
One control unit, is electrically connected at this timing unit, in order to according to this very first time, this second time and this discharge time controlling this change-over time, using and produces and transmit a control signal;
One driver module, is electrically connected at this motor and this control unit, in order to receive this control signal, uses and drives this rotor turns.
2. detecting and controlling system according to claim 1, is characterized in that, this motor is single line DC Brushless Motor.
3. detecting and controlling system according to claim 1, it is characterized in that, this control module also comprises a storage element, and this storage element is electrically connected at this timing unit, in order to store this very first time, this second time, this discharge time and this change-over time.
4. detecting and controlling system according to claim 1, is characterized in that, this detecting unit, this control unit and this drive module setting are in this chip, and this chip is arranged at and is adjacent to this stator part.
5. detecting and controlling system according to claim 1, is characterized in that, this minimum current value is 0.
6. detecting and controlling system according to claim 1, is characterized in that, this chip is Hall sensor, and this chip is arranged at this rotor.
7. detecting and controlling system according to claim 1, it is characterized in that, this first magnetic pole is different from this second magnetic pole, and the 3rd magnetic pole is different from the 4th magnetic pole, and this first magnetic pole, this second magnetic pole, the 3rd magnetic pole and the 4th magnetic pole are N pole or S pole.
8. detecting and controlling system according to claim 1, is characterized in that, this detecting unit also comprises a voltage comparator, and this voltage comparator is provided with a threshold value, and this threshold value, in order to compare with this Kickback voltage value, is used and calculated this minimum current value.
9. detecting and controlling system according to claim 1, is characterized in that, when the 3rd magnetic pole is converted to the 4th magnetic pole, after this first current value is discharged to minimum current value, recharges to this second current value.
10. detecting and controlling system according to claim 1, is characterized in that, this control unit controls this first current value and is converted to the speed of this second current value and controls this change-over time.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210345661.9A CN103684131B (en) | 2012-09-17 | 2012-09-17 | Detecting and controlling system |
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|---|---|---|---|
| CN201210345661.9A CN103684131B (en) | 2012-09-17 | 2012-09-17 | Detecting and controlling system |
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| CN103684131A CN103684131A (en) | 2014-03-26 |
| CN103684131B true CN103684131B (en) | 2015-12-09 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5285135A (en) * | 1992-09-23 | 1994-02-08 | Sgs-Thomson Microelectronics, Inc. | Automatic adjustment of commutation delay for brushless DC motor for improved efficiency |
| JP3095789B2 (en) * | 1990-12-25 | 2000-10-10 | 富士通株式会社 | Motor constant-speed rotation control device |
| CN1384596A (en) * | 2001-05-09 | 2002-12-11 | 关邦夫 | Driver for threephase brush-less motor |
| CN1387311A (en) * | 2001-05-18 | 2002-12-25 | 关邦夫 | Device for driving three-phase semiwave driven brushless electric machine |
| CN101001067A (en) * | 2006-01-12 | 2007-07-18 | 旺玖科技股份有限公司 | Drive circuit for controlling fan |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8664905B2 (en) * | 2010-02-26 | 2014-03-04 | Pratt & Whitney Canada Corp. | Control of brushless motor |
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- 2012-09-17 CN CN201210345661.9A patent/CN103684131B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3095789B2 (en) * | 1990-12-25 | 2000-10-10 | 富士通株式会社 | Motor constant-speed rotation control device |
| US5285135A (en) * | 1992-09-23 | 1994-02-08 | Sgs-Thomson Microelectronics, Inc. | Automatic adjustment of commutation delay for brushless DC motor for improved efficiency |
| CN1384596A (en) * | 2001-05-09 | 2002-12-11 | 关邦夫 | Driver for threephase brush-less motor |
| CN1387311A (en) * | 2001-05-18 | 2002-12-25 | 关邦夫 | Device for driving three-phase semiwave driven brushless electric machine |
| CN101001067A (en) * | 2006-01-12 | 2007-07-18 | 旺玖科技股份有限公司 | Drive circuit for controlling fan |
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| CN103684131A (en) | 2014-03-26 |
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Effective date of registration: 20180820 Address after: 1, 7 yuan, 2 yuan 1 Street, Hsinchu, Taiwan, China Patentee after: Advanced Analog Technology, Inc. Address before: Taiwan Hsinchu County Tai Yuan Street China jhubei City, No. 38 3 floor 8 Patentee before: Yuanxiang Technology Co., Ltd. |