CN1243355A - Drive control method for straight-line vibration motor - Google Patents
Drive control method for straight-line vibration motor Download PDFInfo
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- CN1243355A CN1243355A CN 99109871 CN99109871A CN1243355A CN 1243355 A CN1243355 A CN 1243355A CN 99109871 CN99109871 CN 99109871 CN 99109871 A CN99109871 A CN 99109871A CN 1243355 A CN1243355 A CN 1243355A
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- drive current
- ticker
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- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
A method for driving a linear oscillating motor and a linear oscillating motor are provided. The motor includes a fixed magnetic member, a movable member having a magnet and being supported to oscillate relative to the fixed magnetic member, a detector that detects displacement of the movable member, and a control that oscillates the movable member by sending drive current to a coil of the fixed magnetic member. The method includes controlling, during a first half-period that occurs within a full amplitude period of the movable member, the drive current based upon the output of the detector. The method also includes controlling, during a second half-period that occurs within a fill amplitude period of the movable member, the drive current based upon a fixed drive current waveform.
Description
The present invention relates to make linear motor to produce the drive controlling method of the linear vibration electric motor of double vibrations.
Produce stator that the linear vibration electric motor of double vibrations is made up of electromagnet or permanent magnet, comprise and make permanent magnet or electromagnet vibrates supported freely ticker, with the detection means of the displacement that detects ticker and according to the output of this detection means, control flows is to the drive current of magnet spool, make the ticker vibration control device constituted.
And, be to carry out according to the drive current control of the output of described detection means in every half period of the amplitude of ticker.
In this case, when vibration number is big,, need possess the control device of high throughput, cost has been improved owing to must in half period, finish according to the drive current that the detects control of ticker displacement.
The present invention is in view of the above problems and the drive controlling method of the linear vibration electric motor of invention that its purpose is to provide a kind of drive controlling method that does not produce the linear vibration electric motor that reduces cost of relevant drive controlling problem.
The present invention is a kind of drive controlling method of linear vibration electric motor, the stator of forming by electromagnet or permanent magnet, comprise and make permanent magnet or the supported freely ticker of electromagnet vibration, with the detection means that detects ticker 2 displacements and according to the output of this detection means, control flows makes the drive controlling method of the linear vibration electric motor that the control device of ticker vibration constitutes to the drive current of magnet spool, it is characterized in that output according to described detection means, half period in the one-period of ticker amplitude is carried out drive current control, with giving the drive current control that the fixed drive electric current of setting earlier carries out other half period.Drive current control according to the output of detection means is only carried out in the half period of amplitude.
At this moment, the output according to detection means also can disconnect fixing drive current in other half period.Can in the one-period of amplitude, enlarge the drive current control domain.And,, also can control drive current and carry out the correction of breaking part according to the output of detection means when fixing drive current disconnects.In the one-period of amplitude, can reduce the amplitude of fluctuation of drive current.
The detection of the displacement of ticker also can be carried out in any half period of the one-period of amplitude.
Some symbols in following brief description accompanying drawing and the accompanying drawing.
Fig. 1 is the action specification figure of one embodiment of the invention.
Fig. 2 is the same circuit block diagram.
Fig. 3 is the action specification figure of another embodiment.
In above-mentioned accompanying drawing, 1-stator; 2-ticker; 5-control part; 11-coil.
Embodiment
At first, the example that is configured to regard to linear vibration electric motor is illustrated, it comprises and forming as the electromagnet with coil 11, the stator 1 that on framework 3, is fixed, with permanent magnet 20, also have simultaneously by spring 4,4, for the supported freely ticker 2 of framework 3 vibrations, in such linear vibration electric motor as shown in Figure 2, detect the magnetic of the magnet 29 that is arranged at ticker 2 with the magnetic detection coil 39 of framework 3 outfits, with the output of sensor portion 6 processing magnetic detection coils 39, promptly detect amplitude or the speed or the acceleration of ticker 2.Then, the control section 5 of the output of receiving sensor test section 6 passes through control efferent 50 according to the output (for example amplitude) of sensor portion 6, and the coil 11 in described stator 1 provides the drive current of pulse duration.
That is to say that ticker 2 is when vibrating, described magnetic detection coil 39 produces the starting voltage A of sine wave as shown in Figure 1, and this starting voltage is zero at the two ends of amplitude, and its maximum is along with the size of amplitude and the value of speed, direction of vibration etc.Supply with the drive current B of coil 11 according to this value control, here as shown in Figure 1, ticker 2 is positioned at an end of amplitude, t when being zero from described starting voltage A, voltage V0 behind the detection stipulated time t0, should worthwhilely make amplitude,, carry out the pulse duration control of drive current according to this magnitude of voltage V0.That is to say, provide drive current to t2 to coil 11 through stipulated time t1 since time t, simultaneously with the time of (t2-t1) time conduct according to described magnitude of voltage V0, if magnitude of voltage V0 large amplitude is big, then shorten (t2-t1) time, if the little amplitude of magnitude of voltage V0 is little, then prolong (t2-t1) time.
But, only see the half period in the one-period of amplitude as according to the drive controlling of the amplitude (speed) that detects.About other half period, when the t when self-starting voltage A is zero begins from giving behind the fixed stipulated time t3 to give fixed stipulated time t4 equally till, as the drive current B ' that supplies with coil 11.About the half period with fixing drive current B ' driving, control part 5 also can be used for other processing.
Providing is in the half period of drive current B ' of time of fixing (t4-t3), asks magnitude of voltage V0, also can its down half period carry out drive current control according to magnitude of voltage V0.Control the half period that staggers owing to the detection of ticker 2 displacements with according to the drive current of detected value, so control and treatment also can be carried out low speed control.
And when having controlled the half period of amplitude with fixing drive current, if see the complete period of amplitude, the control domain of drive current narrows down, and has reduced the amplitude control domain.For this reason, according to detected magnitude of voltage V0, as shown in Figure 3, also can disconnect the fixing drive current of half period.Can enlarge the control domain of drive current.
And, when disconnecting fixing drive current,, when carrying out described disconnections, also can count the breaking part of fixing drive current because the change of drive current sum (t2-t1)+(t4-t3) is big, carry out the t2 correction in the moment.Certainly, (t2-t1) time is long with comparing based on the original value of magnitude of voltage V0.
In above the present invention, output according to the detection means that detects the ticker displacement, control flows is to the drive current of electromagnet coil, make the ticker vibration, at this moment, the half period in the one-period of the amplitude of ticker is carried out drive current control according to the output of detection means, with giving the drive current control that the fixed drive electric current of setting earlier carries out other half period, because other half period need not be handled and high speed processing simultaneously, can carry out other processing in the free time of output.
Then, according to the output of detection means,,, can add the large amplitude control domain owing to can enlarge the drive current control domain at the one-period of amplitude as disconnecting fixing drive current in other half period.Also have, when fixing drive current disconnects, can carry out the correction of drive current control breaking part according to the output of detection means, thus the amplitude of fluctuation of the drive current of the one-period of amplitude contraction, the driving that can be well on.
The detection of ticker displacement can be carried out in any half period of the one-period of amplitude, can be without high speed processing.
Claims (4)
1. the drive controlling method of a linear vibration electric motor, the stator of forming by electromagnet or permanent magnet, comprise and make permanent magnet or the supported freely ticker of electromagnet vibration, with the detection means that detects ticker 2 displacements and according to the output of this detection means, control flows makes the drive controlling method of the linear vibration electric motor that the control device of ticker vibration constitutes to the drive current of magnet spool, it is characterized in that:
According to the output of described detection means, the half period in the one-period of ticker amplitude is carried out drive current control, with giving the drive current control that the fixed drive electric current of setting earlier carries out other half period.
2. according to the drive controlling method of the described linear vibration electric motor of claim 1, it is characterized in that,, disconnect the fixed drive electric current in other half period according to the output of detection means.
3. the drive controlling method of linear vibration electric motor according to claim 2 is characterized in that, when disconnecting fixing drive current, according to the output of detection means, the breaking part of drive current control is proofreaied and correct.
4. the drive controlling method of linear vibration electric motor according to claim 1 is characterized in that, detects the ticker displacement in either party half period of one-period of amplitude.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99109871 CN1243355A (en) | 1998-07-28 | 1999-07-19 | Drive control method for straight-line vibration motor |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP213306/98 | 1998-07-28 | ||
| CN 99109871 CN1243355A (en) | 1998-07-28 | 1999-07-19 | Drive control method for straight-line vibration motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1243355A true CN1243355A (en) | 2000-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99109871 Pending CN1243355A (en) | 1998-07-28 | 1999-07-19 | Drive control method for straight-line vibration motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN1243355A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244494A (en) * | 2010-05-13 | 2011-11-16 | 安森美半导体贸易公司 | Drive control circuit for linear vibration motor |
| CN101964579B (en) * | 2009-07-22 | 2013-04-10 | 三星电机株式会社 | Horizontal linear vibrator |
| CN105322752A (en) * | 2015-09-24 | 2016-02-10 | 歌尔声学股份有限公司 | Adaptive control micro-motor |
| CN109742998A (en) * | 2018-12-24 | 2019-05-10 | 维沃移动通信有限公司 | Vibration component, motor control method and terminal |
| CN110994912A (en) * | 2019-12-09 | 2020-04-10 | Oppo广东移动通信有限公司 | Vibration device, method of controlling vibration device, electronic apparatus, and storage medium |
| CN113765326A (en) * | 2021-10-11 | 2021-12-07 | 维沃移动通信有限公司 | Linear motor, method and device for detecting oscillation starting direction of linear motor and electronic equipment |
-
1999
- 1999-07-19 CN CN 99109871 patent/CN1243355A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964579B (en) * | 2009-07-22 | 2013-04-10 | 三星电机株式会社 | Horizontal linear vibrator |
| CN102244494A (en) * | 2010-05-13 | 2011-11-16 | 安森美半导体贸易公司 | Drive control circuit for linear vibration motor |
| CN105322752A (en) * | 2015-09-24 | 2016-02-10 | 歌尔声学股份有限公司 | Adaptive control micro-motor |
| WO2017049775A1 (en) * | 2015-09-24 | 2017-03-30 | 歌尔声学股份有限公司 | Self-adaptive control miniature motor |
| CN105322752B (en) * | 2015-09-24 | 2018-07-27 | 歌尔股份有限公司 | Self adaptive control micro motor |
| US10944313B2 (en) | 2015-09-24 | 2021-03-09 | Goertek Inc. | Self-adaptive control miniature motor |
| CN109742998A (en) * | 2018-12-24 | 2019-05-10 | 维沃移动通信有限公司 | Vibration component, motor control method and terminal |
| CN110994912A (en) * | 2019-12-09 | 2020-04-10 | Oppo广东移动通信有限公司 | Vibration device, method of controlling vibration device, electronic apparatus, and storage medium |
| CN113765326A (en) * | 2021-10-11 | 2021-12-07 | 维沃移动通信有限公司 | Linear motor, method and device for detecting oscillation starting direction of linear motor and electronic equipment |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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