CN102319665A - Method and device for generating local ultrasound rotation travelling wave - Google Patents
Method and device for generating local ultrasound rotation travelling wave Download PDFInfo
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- CN102319665A CN102319665A CN201110217456A CN201110217456A CN102319665A CN 102319665 A CN102319665 A CN 102319665A CN 201110217456 A CN201110217456 A CN 201110217456A CN 201110217456 A CN201110217456 A CN 201110217456A CN 102319665 A CN102319665 A CN 102319665A
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- thin plate
- strip thin
- strip
- row ripple
- rotary ultrasonic
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000002604 ultrasonography Methods 0.000 title abstract 5
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 abstract description 3
- 229910001369 Brass Inorganic materials 0.000 description 7
- 239000010951 brass Substances 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses a method for generating a local ultrasound rotation travelling wave. The method comprises the following steps of: performing excited vibration on a position close to one end of a strip thin plate; exciting a bending vibration mode which is asymmetric relative to the central axis of the strip thin plate in the strip thin plate, wherein vibration nodes exist at a position close to the other end on the central axis of the strip thin plate; and generating the local ultrasound rotation travelling wave on a part of sector region in the strip thin plate by taking the vibration nodes as the center. The invention also discloses a device for generating the local ultrasound rotation travelling wave. The device comprises the strip thin plate and an excited vibration component arranged on the strip thin plate and close to one end of the strip thin plate; and the excited vibration component can be used for exciting the bending vibration mode which is asymmetric relative to the central axis of the strip thin plate in the strip thin plate. Compared with the prior art, the invention has the advantages that: the ultrasound rotation travelling wave can be generated on the local region through single-phase excited vibration, the whole device structure is simplified, and the implementation cost is reduced.
Description
Technical field
The present invention relates to a kind of generation method of rotary traveling wave, relate in particular to a kind of generation method of local rotary Ultrasonic row ripple.
Background technology
Rotary Ultrasonic row ripple in the solid has the application and the good prospects for application of reality at aspects such as accurate driving of piezoelectricity and micro-nano object manipulations.Traditionally, the rotary Ultrasonic row ripple in the solid through to have sinusoidal encourage to shake with cosine piezoelectricity annulus mutually mutually obtain, promptly become several sections to the piezoelectricity annulus by 1/4 wavelength division of capable ripple; Mutually spatially differ 90 ° principle mutually by sine and be divided into sine phase and cosine to these piezoelectric segments mutually with cosine; Differ on the time 90 ° of two identical alternating voltages of amplitude be applied to sinusoidal mutually with cosine mutually, in the piezoelectricity annulus, obtain rotary Ultrasonic row ripple.In the method, owing to must carry out the electric driving of two-phase, the piezoelectricity of related device is encouraged further little (little) typeization of shake mechanism and driving power and the further decline of cost is restricted.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiency of the electric driving of necessary two-phase that existing rotary Ultrasonic row ripple generation method had; A kind of generation method and generating apparatus of local rotary Ultrasonic row ripple are provided, can be through the single-phase local rotary Ultrasonic row ripple of generation that shakes of encouraging.
The generation method of local rotary Ultrasonic row ripple of the present invention is encouraged near the position of one of which end a strip thin plate and to be shaken, and in said strip thin plate, has encouraged with respect to the asymmetric flexural vibration mode of the central shaft of strip thin plate; On the central shaft of strip thin plate,, there is vibration nodal point near the position of the other end; Be to generate local rotary Ultrasonic row ripple on the part sector region at center with said vibration nodal point in the strip thin plate.
Said is that the part sector region at center is confirmed or utilized FEM calculation to confirm through measuring with the vibration nodal point.
The generating apparatus of local rotary Ultrasonic row ripple of the present invention comprises a strip thin plate and is installed on this strip thin plate near the element that shakes of encouraging of one of which end that the said element that shakes of encouraging can encourage with respect to the asymmetric flexural vibration mode of the central shaft of strip thin plate in said strip thin plate.
Among the present invention, said strip thin plate can be the uniform strip thin plate of thickness; Also can be the strip tapered sheet that an end is thick, the other end is thin.The preferred strip tapered sheet of the present invention is encouraged near the position of its thicker end tapered sheet and to be shaken, and can increase the amplitude of rotary Ultrasonic row ripple.More preferably, the thickness of said strip tapered sheet one end to the other end is linear change or is secondary or the above curve law variation of secondary.
Utilize measurement device (for example laser vibration gauge) that the phase place and the amplitude of the flexural vibrations that in the strip thin plate, produced by the inventive method are measured.Measurement result shows: on the position near the other end on the central shaft of strip thin plate, look the width of thin strip-plate, can exist one or more vibration nodal point; Near these vibration nodal points, exist the out-of-plane bending vibration zone of two anti-phases.With these vibration nodal points is that a series of concentric circles is made at the center; Measure the out-of-plane vibration on each concentric circles respectively; The result shows: near two intersection points of each concentric circles and anti-phase flexural vibrations zone boundary line, the out-of-plane vibration phase place presents the rule of linear change with circumferential position.Thereby near these two intersection points, exist the partial circumferential ultrasonic travelling wave.Experiment measuring further shows: in these zones, the out-of-plane vibration phase place presents identical symbol with the slope that circumferential position changes.Thereby these partial circumferential ultrasonic travelling waves have the identical direction of motion (all be clockwise direction or all be counterclockwise) for circumference, that is in the strip thin plate, are to have generated local rotary Ultrasonic row ripple on the part sector region at center with said vibration nodal point.
The present invention shakes through the strip thin plate is encouraged near the position of one of which end; In the strip thin plate, encouraged with respect to the asymmetric flexural vibration mode of the central shaft of strip thin plate, produced local rotary Ultrasonic row ripple near the subregion of the other end at the strip thin plate.Compare prior art, the present invention shakes and can generate rotary Ultrasonic row ripple at regional area through single-phase encouraging, and has simplified the structure of whole device, has reduced the realization cost.
Description of drawings
Fig. 1 is the structural representation of embodiment 1 of the generating apparatus of local rotary Ultrasonic row ripple of the present invention; Wherein scheming a is vertical view, and figure b is a left view; 1 is the strip thin plate among the figure; 2,5 is piezoelectric patches (group), and 3 is vibration nodal point, and 4 for being one group of concentric circles at center with vibration nodal point 3; 6 is the surface electrode of piezoelectric patches (group); 7 is the root of strip thin plate, and 8 is the central shaft of strip thin plate, and 9 and 10 are respectively the polarised direction of piezoelectric patches (group) 2,5;
Fig. 2 is near the distribution situation of vibration displacement phase place on the circle that with this vibration nodal point is the center the vibration nodal point of embodiment 1;
Fig. 3 is the structural representation of embodiment 2 of the generating apparatus of local rotary Ultrasonic row ripple of the present invention; Wherein scheming a is vertical view, and figure b is a left view; 11 is the strip tapered sheet among the figure, and 13 is piezoelectric patches (group), and 14 is vibration nodal point; 15 for being one group of concentric circles at center with vibration nodal point 14; 16 is the end of strip tapered sheet, and 17 is the central shaft of strip tapered sheet, and 18 is the electrode of piezoelectric patches (group) 13;
Fig. 4 is near the distribution situation of vibration displacement phase place on the circle that with this vibration nodal point is the center the vibration nodal point of embodiment 2.
The specific embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is elaborated:
The generating apparatus of local rotary Ultrasonic row ripple of the present invention comprises a strip thin plate and is installed on this strip thin plate near the one of which end (for simplicity; Below be called root) encourage the element that shakes, the said element that shakes of encouraging can encourage with respect to the asymmetric flexural vibration mode of the central shaft of strip thin plate in said strip thin plate.When encouraging the element that shakes when in the strip thin plate, having encouraged the asymmetric flexural vibration mode of central shaft with respect to the strip thin plate, on the central shaft of strip thin plate,, there is vibration nodal point near the other end position of (for simplicity, below being called the end); Be to generate local rotary Ultrasonic row ripple on the part sector region at center with said vibration nodal point in the strip thin plate.For ease of public understanding, further specify technical scheme of the present invention with the most frequently used piezoelectric patches (group) as the element that shakes of encouraging of the present invention below.
Apparatus structure in the present embodiment is shown in accompanying drawing 1, and wherein a is a vertical view, and b is a left view.Adopt the uniform strip sheet brass 1 of thickness in the present embodiment, it is of a size of 35 mm (length) * 6 mm (wide) * 0.36 mm (thick).Strip sheet brass 1 wherein the same one side of an end be bonded with the identical strip piezoelectric patches of two chip size performances 2,5; Piezoelectric patches 2,5 is with central shaft 8 symmetries of strip sheet brass 1; The size of piezoelectric patches 2,5 is 5 mm (length) * 2.5mm (wide) * 1 mm (thick), is polarized at thickness direction.The polarised direction of piezoelectric patches 2 is pointed to strip sheet brass 1, and the polarised direction of piezoelectric patches 5 refers to from sheet brass 1.
When frequency is the alternating voltage of 90.7kHz when being added between surface electrode 6 and the strip sheet brass 1 of strip piezoelectric patches 2,5, through measuring or FEM calculation can be known: the distance from its end 7 on the central shaft 8 of strip sheet brass 1 is that the 5mm place exists vibration nodal point 3; Be on a series of concentric circles 4 at center with vibration nodal point 3, existing the local rotary Ultrasonic row ripple that has equidirectional for circumference.Shown in Fig. 2 be by measure or calculate obtain be respectively phase angle and the relation between the angular position theta of oscillation point of the round upper thin sheet out-of-plane vibration of 0.5mm and 0.77mm at radius, the definition of oscillation point position angle θ is as shown in Figure 2.Near angular position theta=90 ° and 270 °, the vibration phase angle is with the position angle linear change, thereby near θ=90 ° and 270 °, has local rotary Ultrasonic row ripple; Near angular position theta=90 ° and 270 °, the vibration phase angle has identical symbol (being negative value) with the slope of position angle linear change, thereby angular position theta=90 ° have identical direct of travel with near 270 ° two partial row's ripples.That is to say,, have two sector regions being that center, position angle are respectively about 90 ° and 270 ° with vibration nodal point 3, in this region generating local rotary Ultrasonic row ripple.
Embodiment 2,
Apparatus structure in the present embodiment is shown in accompanying drawing 3, and wherein a is a vertical view, and b is a left view.The strip thin plate adopts the strip Wedge aluminum board 11 that an end is thick, the other end is thin in the present embodiment, and its size is 35 mm (length) * 6 mm (wide), and the thickness of its root is 3mm.Encourage the element that shakes and adopt a slice strip piezoelectric patches 13, its size is 5 mm (length) * 2.5mm (wide) * 1 mm (thick), is polarized at thickness direction, and is as shown in the figure, is bonded in a side of the root of strip Wedge aluminum board 11.
When frequency is the alternating voltage of 104kHz when being added between surface electrode 18 and the strip Wedge aluminum board 11 of strip piezoelectric patches 13, experiment measuring shows: there is vibration nodal point 14 in the central shaft 17 at the strip Wedge aluminum board apart from its end (16) 4mm place; Be on a series of circles 15 at center with vibration nodal point 14, existing the local rotary Ultrasonic row ripple that has equidirectional for circumference.Shown in Fig. 4 is to be respectively phase angle and the relation between the position angle θ of oscillation point of the round upper thin sheet out-of-plane vibration of 0.6mm, 1.4mm and 2.mm by what experiment recorded at radius, and wherein the definition of oscillation point angular position theta is as shown in Figure 4.Near angular position theta=60 ° and 240 °, the vibration phase angle is with the position angle linear change, thereby is to have local rotary Ultrasonic row ripple near θ=60 ° and 240 °; Near angular position theta=60 ° and 240 °, the vibration phase angle has identical symbol (being negative value) with the slope of position angle linear change, thereby angular position theta=60 ° have identical direct of travel with near 240 ° two partial row's ripples.Promptly near two sector regions angular position theta=60 ° and 240 °, produced rotary Ultrasonic row ripple.
For the ease of understanding, encourage the element that shakes among above-mentioned two embodiment and adopted piezoelectric patches.In fact; Also can piezoelectric patches be replaced with Lang Zhiwen (Langevin) ultrasonic transducer; The end portion vibration face of bright civilian ultrasonic transducer is fixed on end face or bottom surface (for example the fixing through welding or screw rod) of said strip thin plate one end, thereby realizes encouraging of strip thin plate shaken.Which kind of it should be apparent to those skilled in the art that:,, can produce local rotary Ultrasonic row ripple as long as can in above-mentioned strip thin plate, encourage with respect to the asymmetric flexural vibration mode of the central shaft of strip thin plate no matter adopt the concrete mode of shaking of encouraging.For apparatus of the present invention of a certain concrete structure, can confirm the concrete position that local rotary Ultrasonic row ripple produces through measurement or FEM calculation.
Compare to utilize two-phase to encourage to shake and in the piezoelectricity annulus, motivate the prior art of rotary Ultrasonic row ripple, the present invention only needs single-phase encouraging to shake and can realize, encourages the structure of shaking thereby simplified; In addition, compare the piezoelectricity annulus, the structure of strip thin plate is more simple, and manufacturing cost is lower.Therefore, the present invention has a good application prospect at aspects such as accurate driving of piezoelectricity and micro-nano object manipulations.
Claims (10)
1. the generation method of a local rotary Ultrasonic row ripple is characterized in that, a strip thin plate is encouraged near the position of one of which end shake, and in said strip thin plate, has encouraged with respect to the asymmetric flexural vibration mode of the central shaft of strip thin plate; On the central shaft of strip thin plate,, there is vibration nodal point near the position of the other end; Be to generate local rotary Ultrasonic row ripple on the part sector region at center with said vibration nodal point in the strip thin plate.
2. the generation method of portion's rotary traveling wave according to claim 1 is characterized in that, said is that the part sector region at center is confirmed or utilized FEM calculation to confirm through measuring with the vibration nodal point.
3. the generation method of local rotary traveling wave according to claim 1 is characterized in that, said strip thin plate is the strip tapered sheet that an end is thick, the other end is thin; This strip tapered sheet encouraged near the position of its thicker end shake.
4. the generating apparatus of a local rotary Ultrasonic row ripple; It is characterized in that; This device comprises a strip thin plate and is installed on this strip thin plate near the element that shakes of encouraging of one of which end that the said element that shakes of encouraging can encourage with respect to the asymmetric flexural vibration mode of the central shaft of strip thin plate in said strip thin plate.
5. like the generating apparatus of the said local rotary Ultrasonic row ripple of claim 4, it is characterized in that said strip gauge of sheet is even.
6. like the generating apparatus of the said local rotary Ultrasonic row ripple of claim 4, it is characterized in that, the clapboard that said strip thin plate is that an end is thick, the other end is thin, the said element that shakes of encouraging is installed on this clapboard the position near its thicker end.
7. like the generating apparatus of the said local rotary Ultrasonic row ripple of claim 4, it is characterized in that the said element that shakes of encouraging is a slice piezoelectric patches at least.
8. like the generating apparatus of the said local rotary Ultrasonic row ripple of claim 7, it is characterized in that said piezoelectric patches is two, its dimensional performance is identical, all is fixed in the end face or the bottom surface of the same end of strip thin plate, and symmetrical with the central shaft of said strip thin plate; The polarised direction of two piezoelectric patches is all perpendicular to stationary plane, and in the opposite direction each other.
9. like the generating apparatus of the said local rotary Ultrasonic row ripple of claim 7, it is characterized in that said piezoelectric patches is a slice,
Be fixed on the end face or the bottom surface of strip thin plate one end, and be positioned at a side of strip thin plate central shaft; Its polarised direction is perpendicular to stationary plane.
10. like the generating apparatus of the said local rotary Ultrasonic row ripple of claim 4, it is characterized in that the said element that shakes of encouraging is bright civilian ultrasonic transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110217456 CN102319665B (en) | 2011-08-01 | 2011-08-01 | Method and device for generating local ultrasound rotation travelling wave |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110217456 CN102319665B (en) | 2011-08-01 | 2011-08-01 | Method and device for generating local ultrasound rotation travelling wave |
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| Publication Number | Publication Date |
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| CN102319665A true CN102319665A (en) | 2012-01-18 |
| CN102319665B CN102319665B (en) | 2013-10-23 |
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| CN 201110217456 Expired - Fee Related CN102319665B (en) | 2011-08-01 | 2011-08-01 | Method and device for generating local ultrasound rotation travelling wave |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698679A (en) * | 2012-06-26 | 2012-10-03 | 南京航空航天大学 | Method for operating nano matters |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0736553A (en) * | 1993-07-16 | 1995-02-07 | Nippon Telegr & Teleph Corp <Ntt> | Method and device for controlling vibration of paired ultrasonic vibrators |
| JPH07274559A (en) * | 1994-03-30 | 1995-10-20 | Fanuc Ltd | Piezoelectric type linear actuator |
| JPH10216584A (en) * | 1997-02-13 | 1998-08-18 | Nec Yonezawa Ltd | Ultrasonic atomizing device |
| CN1698978A (en) * | 2004-05-20 | 2005-11-23 | 奥林巴斯株式会社 | Ultrasonic vibrator and ultrasonic motor including ultrasonic vibrator |
-
2011
- 2011-08-01 CN CN 201110217456 patent/CN102319665B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0736553A (en) * | 1993-07-16 | 1995-02-07 | Nippon Telegr & Teleph Corp <Ntt> | Method and device for controlling vibration of paired ultrasonic vibrators |
| JPH07274559A (en) * | 1994-03-30 | 1995-10-20 | Fanuc Ltd | Piezoelectric type linear actuator |
| JPH10216584A (en) * | 1997-02-13 | 1998-08-18 | Nec Yonezawa Ltd | Ultrasonic atomizing device |
| CN1698978A (en) * | 2004-05-20 | 2005-11-23 | 奥林巴斯株式会社 | Ultrasonic vibrator and ultrasonic motor including ultrasonic vibrator |
Non-Patent Citations (1)
| Title |
|---|
| 李宏刚等: "新型换能器式大力矩超声波马达的研究", 《哈尔滨理工大学学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698679A (en) * | 2012-06-26 | 2012-10-03 | 南京航空航天大学 | Method for operating nano matters |
| CN102698679B (en) * | 2012-06-26 | 2014-04-16 | 南京航空航天大学 | Method for operating nano matters |
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| Publication number | Publication date |
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| CN102319665B (en) | 2013-10-23 |
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Granted publication date: 20131023 |