CN100438310C - Drive and brake modes of micro motor in a portable type electronic product - Google Patents
Drive and brake modes of micro motor in a portable type electronic product Download PDFInfo
- Publication number
- CN100438310C CN100438310C CNB2006101228523A CN200610122852A CN100438310C CN 100438310 C CN100438310 C CN 100438310C CN B2006101228523 A CNB2006101228523 A CN B2006101228523A CN 200610122852 A CN200610122852 A CN 200610122852A CN 100438310 C CN100438310 C CN 100438310C
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- Prior art keywords
- brake
- micro motor
- driving
- electronic product
- drive
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Abstract
This means consists of a digital processor, a driving IC circuit, a mini-motor and a photo-switch. First, defines the frequency and the driving time of impulse width modulation (IWM) and regulates the IWM occupied-empty ratio of the driving signal. Second, decides that if the time meets the practical need; if no, continuing to regulate; otherwise, using the reverse direction brake. Re-regulates the occupied-empty ratio and decides the impulse number of the reverse direction brake. Then defines whether the reverse direction brake meets the practical need. The method of motor driving and braking can raise the integrated feature of this product and the coherence of the match between components.
Description
[technical field]
The present invention relates to a kind of driving and brake modes of micro motor, refer to the mode utilizing pulse width modulation mode to drive and brake in a kind of portable type electronic product especially, this mode can improve the whole consistency of electronic product, and then improves its performance.
[background technology]
Motor obtains increasingly extensive application in portable electronic product, for satisfying the demand of these electronic products to power consumption, control and space, motor driven requires high efficiency and high degree of integration.Especially in the digital camera, higher to the type of drive requirement of motor.The lens motor of general digital camera is to adopt direct voltage drive, is illustrated in figure 1 as the Drive Structure figure in the known drive mode.Digital processing unit 100 is sent drive signal to drive integrated circult 101, and drive integrated circult 101 is received input signal 1, input signal 2, is that output signal 1, output signal 2 export micro motor 102 to then with it, to drive this motor; Light interrupts device 103 and detects the position of micro motor and it is fed back to digital processing unit 100, after digital processing unit 100 detects satisfactory pulse number, carries out the equipotential brake.Though direct voltage generally uses the stabilized voltage power supply design, but because of the micro motor rotating speed itself has error, also have build-up tolerance between each parts, on the individuality of each electronic product, also have difference, stop position is all different after causing camera lens stretching speed and required time, brake, has influenced uniformity in product performance.
[summary of the invention]
The present invention is directed to above problem, the driving and the brake modes of portable type electronic product micro motor improved, the performance of electronic product is obviously promoted.This driving and brake modes are the requirement of elder generation according to each associated component such as digital processing unit, micro motor, drive integrated circult etc. in the electronic product, make suitable modulating frequency, and learn theoretical driving time according to specifications, adjust the duty ratio of electronic product drive signal pulsewidth then, the whether realistic requirement of more used time, if do not meet, again modulate its duty ratio, if meet the requirements, use oppositely brake, adjust duty ratio once more, determine the oppositely pulse number of brake, this duty ratio can be identical with aforementioned duty ratio, also can be different.Determine whether realistic requirement of oppositely brake at last, if do not meet, be transferred to meet till.Use pulse-width modulation to carry out micro motor driving and brake, can overcome the inconsistent shortcoming of each assembly property that causes because of the assembly assembly error effectively, make each electronic product individuality that stable properties of product can be arranged.
[description of drawings]
Fig. 1 is the Drive Structure figure in the known drive mode
Fig. 2 is the present invention's flow chart of steps
Fig. 3 is the frequency diagram of the present invention's embodiment
100 digital processing units, 101 drive integrated circults
102 micro motors, 103 light interrupt device
S200----S204 is a process step
[specific embodiment]
For further specifying the present invention, now describe in conjunction with icon and embodiment.
Lens driving motor with digital camera in the present embodiment is that example describes.The lens driving motor structure of being carried in the present embodiment comprises a digital processing unit 100, one drive integrated circult 101, one micro motor 102 and a light interrupt device 103. digital processing units 100 and send drive signal to drive integrated circult 101, drive integrated circult 101 exports the signal of being received to micro motor 102, light interrupts the pulse width signal that device 103 detects micro motor, feed back to digital processing unit 100. in this process, the driving of micro motor 102 is by pulse width modulation controlled, when light interrupts device 103 feed signals to digital processing unit 100, digital processing unit 100 commander's brakes are oppositely braked, pulse number is oppositely braked, in time brake makes camera lens be parked in desired location.
Its concrete steps earlier according to the requirement of each associated component such as digital processing unit, micro motor, drive integrated circult etc. in the electronic product, are determined the frequency and the driving time S200 of pulse-width modulation as shown in Figure 2, and this driving time can be learnt according to specifications; Adjust the duty ratio S201 of drive signal pulse-width modulation then, determine the realistic S202 of requirement whether of used time, if do not meet, again modulate its duty ratio,, use oppositely brake if meet the requirements, adjust duty ratio once more, determine the oppositely pulse number S203 of brake, this duty ratio can be identical with aforementioned duty ratio, also can be different; Determine the whether realistic S204 that requires of oppositely brake at last, if do not meet, be transferred to meet till.For adjusting duty required time when, be illustrated in figure 3 as the frequency diagram of the present invention's embodiment.Drive integrated circult 101 receives input signal 1, and input signal 2, input signal 2 are set its duty ratio by pulse width modulation controlled, is output as output signal 1 through the signal of adjusting, and output signal 2 drives micro motor 102.Light interrupts device 103 its pulse signals of detection and feeds back to digital processing unit 100, uses oppositely brake to adjust its input signal, and the lens driving time of every digital camera and camera lens stop position are met design requirement, and guarantees its consistency.
The above only is the specific embodiment of the invention, can not limit the scope that invention is implemented with this, and all equivalences of being done according to the present patent application claims content change and revise, all in the scope that patent of the present invention contains.
Claims (4)
1. the driving of a portable type electronic product micro motor and brake modes, it comprises
One digital processing unit, output drive signal;
One drive integrated circult is accepted the drive signal that digital processing unit spreads out of, and is spread out of;
One micro motor is accepted the signal that drive integrated circult spreads out of, the beginning drive actions;
One light interrupts device, detect the position of micro motor and with feedback information in digital processing unit,
The described information of digital processor processes is also exported brake signal, carries out brake;
It is characterized in that: pulse width modulation mode is used in the driving of this micro motor and brake, the steps include:
A. determine the frequency and the driving time of pulse-width modulation;
B. adjust the pulse duration frequency duty ratio of drive signal;
C. determine time practical requirement whether, if do not satisfy, repeating step b if satisfy, enters in the steps d;
D. use oppositely brake, adjust duty ratio once more, determine oppositely brake pulse number;
E. determine whether realistic requirement of oppositely brake, if do not meet, repeating step d meets the requirements up to reverse brake.
2. the driving of a kind of portable type electronic product micro motor according to claim 1 and brake modes, the frequency that it is characterized in that pulse-width modulation described in the step a are according to digital processing unit, and micro motor and drive integrated circult requirement are decided.
3. the driving of a kind of portable type electronic product micro motor according to claim 1 and brake modes is characterized in that driving time is a default theoretical value among the step a.
4. the driving of a kind of portable type electronic product micro motor according to claim 1 and brake modes is characterized in that driving the required pulse duration frequency duty ratio of micro motor and oppositely the used pulse duration frequency duty ratio of brake is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101228523A CN100438310C (en) | 2006-10-20 | 2006-10-20 | Drive and brake modes of micro motor in a portable type electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101228523A CN100438310C (en) | 2006-10-20 | 2006-10-20 | Drive and brake modes of micro motor in a portable type electronic product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1960158A CN1960158A (en) | 2007-05-09 |
| CN100438310C true CN100438310C (en) | 2008-11-26 |
Family
ID=38071686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101228523A Expired - Fee Related CN100438310C (en) | 2006-10-20 | 2006-10-20 | Drive and brake modes of micro motor in a portable type electronic product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100438310C (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06347684A (en) * | 1993-04-12 | 1994-12-22 | Olympus Optical Co Ltd | Automatic focusing device for camera whose lens is exchangeable |
| JPH1068862A (en) * | 1996-08-26 | 1998-03-10 | Fuji Photo Optical Co Ltd | Lens device for television camera |
| US5826118A (en) * | 1994-02-04 | 1998-10-20 | Nikon Corporation | Camera having a controller to determine a reference position of a lens barrel |
| JP2000121908A (en) * | 1998-10-20 | 2000-04-28 | Canon Inc | Method and device for lens driving |
| JP2001136789A (en) * | 1999-11-05 | 2001-05-18 | Nidec Copal Corp | Ic drive circuit |
| CN1348586A (en) * | 1999-04-30 | 2002-05-08 | 汤姆森特许公司 | Motion control system |
-
2006
- 2006-10-20 CN CNB2006101228523A patent/CN100438310C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06347684A (en) * | 1993-04-12 | 1994-12-22 | Olympus Optical Co Ltd | Automatic focusing device for camera whose lens is exchangeable |
| US5826118A (en) * | 1994-02-04 | 1998-10-20 | Nikon Corporation | Camera having a controller to determine a reference position of a lens barrel |
| JPH1068862A (en) * | 1996-08-26 | 1998-03-10 | Fuji Photo Optical Co Ltd | Lens device for television camera |
| JP2000121908A (en) * | 1998-10-20 | 2000-04-28 | Canon Inc | Method and device for lens driving |
| CN1348586A (en) * | 1999-04-30 | 2002-05-08 | 汤姆森特许公司 | Motion control system |
| JP2001136789A (en) * | 1999-11-05 | 2001-05-18 | Nidec Copal Corp | Ic drive circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1960158A (en) | 2007-05-09 |
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Granted publication date: 20081126 Termination date: 20141020 |
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