CN101071973A - Motor device and its control method - Google Patents
Motor device and its control method Download PDFInfo
- Publication number
- CN101071973A CN101071973A CNA2007100936628A CN200710093662A CN101071973A CN 101071973 A CN101071973 A CN 101071973A CN A2007100936628 A CNA2007100936628 A CN A2007100936628A CN 200710093662 A CN200710093662 A CN 200710093662A CN 101071973 A CN101071973 A CN 101071973A
- Authority
- CN
- China
- Prior art keywords
- detecting unit
- rotor
- signal
- motor
- utmost point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention is a motor control method, where the motor has a stator and a rotor composed of several N and S poles interlaced, and the motor control method comprises the steps of: providing a first detection unit arranged on the stator; providing a second detection unit arranged on the stator to make the two detection units unable to simultaneously detect the junctions of the N and S poles of the rotor when the rotor rotates; when detecting the N and S poles of the rotor, the first detection unit respectively outputs a first signal and a second signal; when detecting the N and S poles of the rotor, the second detection unit respectively outputs a third signal and a fourth signal; judging whether one of the four signals exceeds a given period of time; and if one exceeds the given period of time, switching off the motor power supply.
Description
The application on March 12nd, 2004 propose, its denomination of invention divides an application with last identical No. 200410039928.7 application for a patent for invention (being awarded patent for invention).
Technical field
The present invention is relevant for a kind of control method of motor, particularly relevant for a kind of control method that the motor protection mechanism is provided at the motor running dead angle.
Background technology
As shown in Figure 1, existing motor apparatus is by a stator 10, and one rotor 12 constitute, this rotor 12 is provided with four N utmost points and four S utmost points of interlaced arrangement, one detecting unit 16 is arranged on the stator 10, be used for the N utmost point of detection rotor 12 or the S utmost point by and output signal with the sense of current of conversion stator coil (not shown), make stator 10 change the polarity of silicon steel sheets corresponding to rotor 12.When detecting unit 16 detects the N utmost point 121, export a high levels signal, and to make the reversal of the silicon steel sheet 101 at detecting unit 16 places be the N utmost point, make rotor be able to continuous running by the repulsive force of 121 pairs of silicon steel sheets 101 of the N utmost point; When detecting unit 16 detects the S utmost point, export a low level signal, the reversal that makes silicon steel sheet 101 is the S utmost point, its running principle is same as above.S among this moment detector 16 detected signals such as Fig. 5 a
NomShown in.
When rotor 12 stops operating, if its arbitrary N utmost point 121 and the S utmost point 122 intersections by chance be parked in detecting unit 16 near, then when motor turned round again, detecting unit 16 at first can detect the N utmost point and make the reversal of silicon steel sheet 101 was the N utmost point, and and then made rotor 12 do rotation clockwise.As shown in Figure 2, when rotor 12 turns to when making detecting unit 16 detect the S utmost point 122, the polarity of silicon steel sheet 101 can be transformed to the S utmost point, repulsive force by 101 pairs of S utmost points 122 of silicon steel sheet makes rotor 122 towards anticlockwise rotation, make detecting unit 16 detect the N utmost point 121 again once again, and get back to state shown in Figure 1, clockwise, anticlockwise are rotated so repeatedly, can make rotor 12 produce jitter phenomenon, at this moment S among the signal of detecting unit 16 such as Fig. 5 b
AbnomShown in, cause electric current to cross the damage of ambassador's motor at last.
When near the detection range that rests on detecting unit 16 N-S of rotor 12 utmost point intersection, be called motor and be absorbed in the dead angle.The N-S intersection system of rotor 12 decides with the magnet polarity of rotor 12.Rotor 12 in Fig. 1, Fig. 2 has eight magnetic poles, so have the intersection of eight N-S utmost points, when the magnetic pole of rotor the more the time, then N-S utmost point intersection also the more makes that motor is easier to be absorbed in the dead angle.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of control method of motor, whether be absorbed in the dead angle to detect motor, and the mechanism of motor protection is provided.
Motor control method provided by the present invention system is used for a motor, and this motor has the rotor that a stator and is formed by several N utmost points and the extremely interlaced configuration of S, and this control method comprises the following steps: to provide one first detecting unit to be arranged on this stator; Provide one second detecting unit to be arranged on this stator, and make that when this rotor rotation, this first detecting unit and this second detecting unit can not detect the N utmost point of this rotor and the point of interface of the S utmost point simultaneously; When this first detecting unit detects the N utmost point of this rotor and the S utmost point, corresponding respectively output one first signal and a secondary signal; When this second detecting unit detects the N utmost point of this rotor and the S utmost point, corresponding respectively output one the 3rd signal and one the 4th signal; Whether one of them surpasses the set time to judge this first, second, third and fourth signal; If one of them surpasses the set time this first, second, third and fourth signal, then turn-off this motor power supply.The above-mentioned set time is the rotating speed corresponding to this rotor.
In motor control method of the present invention, this first detecting unit and this second detecting unit are the magnetic field detection unit.This magnetic field detection unit can be shunt (shunt), current transformer (current transformer), Hall element (Hall sensor) or magneto-resistor (magnetic resistor).
The present invention also provides a kind of motor apparatus, comprising: a rotor has the configuration that intermeshes of several N utmost points and the S utmost point; One stator; One first detecting unit is arranged on this stator; One second detecting unit is arranged on this stator, and with this first detecting unit suitable distance of being separated by; And a processing unit, receive signal from this first detecting unit and this second detecting unit; Wherein, when this rotor rotation, this first detecting unit and this second detecting unit can not detect the N utmost point of this rotor and the point of interface of the S utmost point simultaneously, and this processing unit uses the power supply that above-mentioned motor control method judges whether to turn-off this motor apparatus simultaneously.
Motor of the present invention is provided with two detecting units; these two detecting units can not detect the intersection of the rotor N-S utmost point simultaneously; during therefore as if motor starting; one of them detecting unit is in rotor N-S utmost point intersection; and make rotor produce jitter phenomenon; then can continue to be in a certain position standard and learn that the power supply that can turn-off motor by this avoids damaging with the protection motor by the detected signal of another detecting unit.
Description of drawings
Fig. 1 represents that the rotor of an existing motor apparatus produces the schematic diagram of shake, and its rotor rotates earlier toward the clockwise direction.
Fig. 2 represents in the motor apparatus shown in Figure 1 that rotor towards counterclockwise rotating, forms jitter phenomenon again.
Fig. 3 is the schematic diagram of motor apparatus of the present invention.
Fig. 4 represents the control mode of detecting unit of the present invention.
Fig. 5 a represents the existing output waveform figure of detecting unit when motor runs well.
Fig. 5 b represents the existing output waveform figure of detecting unit when motor is positioned at the dead angle.
Fig. 6 a is one of them a output signal of detecting unit of the present invention.
Fig. 6 b represents the output signal of another detecting unit of the present invention.
Fig. 7 is a motor control method flow chart of the present invention.
Embodiment
Fig. 3 is the schematic diagram of motor apparatus of the present invention.Motor apparatus of the present invention is made of rotor 12 and stator 10, and rotor 12 has several magnetic poles (being eight in the present embodiment), and wherein the N utmost point and the S utmost point are staggered.Detecting unit 16 and detecting unit 18 are set on stator 10, and make detecting unit 16 and detecting unit 18 can not detect the N utmost point of rotor 12 and the intersection of the S utmost point simultaneously.With motor shown in Figure 3 is example, the position that is provided with of detecting unit that can detect the intersection of the N utmost point of rotor 12 and the S utmost point with detecting unit 16 simultaneously has eight places, promptly on the circumference of stator 10, just there is a position from the detecting unit 16 45 degree central angles of whenever being separated by, so 18 of detecting units otherwise being arranged on one of them position just can not detect the N utmost point of rotor 12 and the intersection of the S utmost point with detecting unit 16 simultaneously. Detecting unit 16,18 can be the magnetic field detection unit, and the detecting unit of this class has shunt (shunt), current transformer (current transformer), Hall element (Hallsensor) or magneto-resistor (magnetic resistor) etc.
Fig. 4 represents the calcspar of the control method of motor apparatus of the present invention.As shown in the figure, output signal S16, the S18 of detecting unit 16,18 input to processing unit 42 respectively.The signal S16 that exports during these detecting unit 16 process N utmost points is called first signal (high levels), the signal S16 that exports during through the S utmost point is called secondary signal (low level), the signal S18 that exports during the detecting unit 18 process N utmost points is called the 3rd signal (high levels), and the signal S18 that exports during through the S utmost point is called the 4th signal (low level).
Again with reference to figure 3, when motor starting, suppose by chance can to detect detected unit 16 near the N-S utmost point intersection of rotor 12, because detecting unit 16 can't correctly be judged the magnetic of rotor 12, just can't correctly change the polarity of stator 10, therefore cause rotor 12 that jitter phenomenon takes place, at this moment, detecting unit 16 is exported first signals and secondary signal and the dither signal that forms alternately, when rotor 12 jitter phenomenons takes place and can't normal rotation the time, then another detecting unit 18 detects the N magnetic pole always, surpasses a special time so its signal of exporting will maintain high levels.
Another detecting unit 18 output high levels signals and the lasting special time that surpasses when detecting detecting unit 16 output jitter signals, processing unit 42 is sent an activation signal to motor, in order to stop the rotation of rotor, avoid rotor to cause excessive damage of power supply because of shake.
When Fig. 6 a, 6b are motor generation jitter phenomenon, the signal waveform of detector 16,18.When motor starting, if the N-S utmost point intersection of rotor 12 just in time is positioned at the detection range of detecting unit 16, because checkout gear 16 can't correctly detect N magnetic pole or S magnetic pole, so the dither signal of output shown in waveform S16, cause the rotor 12 can't normal rotation, and jitter phenomenon takes place; At this moment, detecting unit 18 can be sensed the N magnetic pole of rotor 12 always, then exports the high levels signal shown in waveform S18.
At this moment, processing unit 42 detects the output waveform of detecting unit 16 and 18, and when detecting unit 16 output jitter signals, and the high levels signal of detecting unit 18 outputs surpasses special time t1, and then processing unit 42 is sent an activation signal, stops the running of motor.No matter which kind of signal detecting unit exports, as long as continuing the time accurate in a certain position, signal surpasses special time, then represent can judge rightly out the polarity of rotor of detecting unit.
Wherein, special time t1 is the rotating speed time corresponding to motor; When the rotating speed of motor is healed when fast, then special time t1 is shorter.And above-mentioned processing unit 42 is the variations according to external signal, and the running of control motor, this processing unit 42 can be a single-chip.
Fig. 7 shows motor control method flow chart of the present invention.Motor apparatus of the present invention comprises a rotor and a stator, and above-mentioned rotor has several N magnetic poles and S magnetic pole and intermeshes and form the ring-type configuration, the Fig. 3 that please arrange in pairs or groups, and control method for fan comprises the following steps:
Step 100: two detecting units 16,18 are set on stator 20, make rotor 12 when stopping operating, induction installation 16,18 can side by side not drop on the intersection of two N magnetic poles and S magnetic pole, and execution in step 110 then.
Wherein, when detecting unit 16 detects N magnetic pole or S magnetic pole, output signal S16, the exporter is called first signal when wherein detecting the N utmost point, the exporter is called secondary signal when detecting the S utmost point, when detecting unit 18 above-mentioned N magnetic poles of induction and S magnetic pole, and output signal S18 then, the exporter is called the 3rd signal when wherein detecting the N utmost point, and the exporter is called the 4th signal when detecting the S utmost point.In the present embodiment, the first, the 3rd signal is the high levels signal, and the second, the 4th signal is the low level signal.
Step 110: detect the first, second, third or the 4th signal that detecting unit is exported, and judge whether to maintain high levels or low level surpasses the specific time.
When motor starting, if one of them maintains high levels or low level detecting unit 16,18 one of them first to fourth signal of exporting, and continue to surpass a special time t1, then represent the positive and negative reinspection of another detecting unit to measure high and low position standard and the signal of output jitter, and rotor is in dither state, then execution in step 130; If not, execution in step 120 then.
With Fig. 3 is example, when motor starting, because the N-S utmost point intersection of rotor 12 just in time is positioned at the induction zone of detecting unit 16, therefore, detecting unit 16 can't correctly induce the magnetic pole of rotor 12, and the output jitter signal causes the rotor 12 can't normal rotation, and detecting unit 18 is sensed the N magnetic pole, so output high levels signal, and shown in Fig. 6 b, the high levels signal that detecting unit 18 is exported continues to surpass special time t1.
Step 120: make motor keep normal rotation.
When motor starting, if be not in the detection range of detecting unit 16 near the N-S intersection of rotor 12, then detecting unit 16 can correctly induce the magnetic pole of rotor 12, therefore, processing unit 42 is according to detecting unit 16 detected magnetic poles, change the polarity of stator 10, make rotor 12 normal rotation.
If detecting unit 16,18 one of them when motor starting, output jitter signal, and another detecting unit output high levels or low level signal, but the time that continues not greater than special time t1, then represent motor not to be absorbed in the dead angle.
Step 130: the power supply of turn-offing motor.
When processing unit 42 detects detecting unit 16,18 one of them output jitter signal, the signal of another detecting unit output continues to surpass special time t1, then closes the power supply of motor, causes damage because of the rotor shake by excessive electric current for avoiding motor.
Motor of the present invention is provided with two detecting units; these two detecting units can not detect the intersection of the rotor N-S utmost point simultaneously; during therefore as if motor starting; one of them detecting unit is in rotor N-S utmost point intersection; and make rotor produce jitter phenomenon; then can continue to be in a certain position standard and learn that the power supply that can cut off motor by this avoids damaging with the protection motor by the detected signal of another detecting unit.
Though the present invention discloses as above with preferred embodiment; yet it is not in order to limit the present invention; any person skilled in the art person without departing from the spirit and scope of the present invention; when can doing all changes that is equal to and retouching, so protection scope of the present invention is when looking accompanying being as the criterion that the application's claim scope defined.
Claims (9)
1. motor apparatus comprises:
One rotor has several N utmost points and the S utmost point;
One stator;
One first detecting unit is arranged on this stator;
One second detecting unit, be arranged on this stator and with this first detecting unit distance of being separated by; And
One processing unit receives the signal from this first detecting unit and this second detecting unit.
2. motor apparatus as claimed in claim 1 is characterized in that several N magnetic poles of this rotor and S magnetic pole intermesh to form the ring-type configuration.
3. motor apparatus as claimed in claim 1 is characterized in that when this rotor rotation this first detecting unit and this second detecting unit can not detect the N utmost point of this rotor and the point of interface of the S utmost point simultaneously.
4. motor apparatus as claimed in claim 1 is characterized in that this first detecting unit and this second detecting unit are the magnetic field detection unit.
5. motor apparatus as claimed in claim 1 is characterized in that this first detecting unit and this second detecting unit are shunt.
6. motor apparatus as claimed in claim 1 is characterized in that this first detecting unit and this second detecting unit are current transformer.
7. motor apparatus as claimed in claim 1 is characterized in that this first detecting unit and this second detecting unit are Hall element.
8. motor apparatus as claimed in claim 1 is characterized in that this first detecting unit and this second detecting unit are magneto-resistor.
9. motor apparatus as claimed in claim 1 is characterized in that this processing unit is a single-chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100936628A CN101071973A (en) | 2004-03-12 | 2004-03-12 | Motor device and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100936628A CN101071973A (en) | 2004-03-12 | 2004-03-12 | Motor device and its control method |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100399287A Division CN1324804C (en) | 2004-03-12 | 2004-03-12 | Motor device and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101071973A true CN101071973A (en) | 2007-11-14 |
Family
ID=38899011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100936628A Pending CN101071973A (en) | 2004-03-12 | 2004-03-12 | Motor device and its control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101071973A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107431452A (en) * | 2015-04-10 | 2017-12-01 | 株式会社美姿把 | The control method of motor drive and motor drive |
-
2004
- 2004-03-12 CN CNA2007100936628A patent/CN101071973A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107431452A (en) * | 2015-04-10 | 2017-12-01 | 株式会社美姿把 | The control method of motor drive and motor drive |
| CN107431452B (en) * | 2015-04-10 | 2020-03-31 | 株式会社美姿把 | Motor drive device and control method for motor drive device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100400609B1 (en) | Position encoder | |
| CN106655959A (en) | Method for measuring rotation speed of brushless direct-current motor | |
| CN105763109A (en) | Brushless DC motor phase conversion control method and brushless DC motor control system | |
| CN107762957A (en) | A kind of device for adjusting electric fan steering angle | |
| CN102832863B (en) | Controller for motor and method thereof | |
| CN103401488A (en) | Elevator door motor control method | |
| CN101071973A (en) | Motor device and its control method | |
| CN103606328B (en) | Brshless DC motor hall signal and rotor-position relation self-learning method | |
| TW200901614A (en) | Motor control device and method thereof | |
| CN1324804C (en) | Motor device and control method thereof | |
| CN110221092A (en) | Revolving speed steering detection method, electrical fault detection method, detection system and motor | |
| US8892395B2 (en) | Detecting angular position of a rotating device | |
| CN1106708C (en) | Circuit arrangement for powering electric motor | |
| JP2010276417A (en) | Disconnection detecting device and disconnection detecting method | |
| JP4633521B2 (en) | Brushless motor control device, control method, and motor system | |
| TWI251396B (en) | Motor apparatus and its control method | |
| CN203326939U (en) | Circuit without position detection | |
| CN103344261B (en) | The inertia resetting method of automobile meter pointer | |
| JPH04193092A (en) | Apparatus for controlling motor | |
| CN217396173U (en) | Fragrance channel positioning device based on Hall sensor | |
| CN108919119B (en) | Detection device and method for motor transmission system under loaded running state | |
| CN103199665B (en) | Three-phase brushless direct current motor without sensor | |
| JPH01122388A (en) | Sensorless brushless motor | |
| CN101499761B (en) | Control apparatus for starting DC brushless motor and method thereof | |
| CN206164414U (en) | Bias circuit and motor drive |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20071114 |