CN108435523A - Droplet-shaped flextensional transducer - Google Patents
Droplet-shaped flextensional transducer Download PDFInfo
- Publication number
- CN108435523A CN108435523A CN201810234796.5A CN201810234796A CN108435523A CN 108435523 A CN108435523 A CN 108435523A CN 201810234796 A CN201810234796 A CN 201810234796A CN 108435523 A CN108435523 A CN 108435523A
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- shell
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- shaped
- driving element
- piece
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- 230000005855 radiation Effects 0.000 claims abstract description 16
- 230000007704 transition Effects 0.000 claims abstract description 13
- 239000000919 ceramic Substances 0.000 claims description 23
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 13
- 150000002910 rare earth metals Chemical class 0.000 claims description 12
- 230000005389 magnetism Effects 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000005620 antiferroelectricity Effects 0.000 claims 1
- 230000008878 coupling Effects 0.000 abstract description 10
- 238000010168 coupling process Methods 0.000 abstract description 10
- 238000005859 coupling reaction Methods 0.000 abstract description 10
- 238000005452 bending Methods 0.000 abstract description 7
- 238000004891 communication Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- 239000000956 alloy Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 230000002463 transducing effect Effects 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 241001062009 Indigofera Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/08—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with magnetostriction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
- H04B13/02—Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
- B06B2201/50—Application to a particular transducer type
- B06B2201/55—Piezoelectric transducer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
- B06B2201/50—Application to a particular transducer type
- B06B2201/57—Electrostrictive transducer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
- B06B2201/50—Application to a particular transducer type
- B06B2201/58—Magnetostrictive transducer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
- B06B2201/70—Specific application
- B06B2201/74—Underwater
Abstract
The present invention provides a kind of droplet-shaped flextensional transducer, including droplet-shaped radiation shell, transition block and driving element：The droplet-shaped radiation shell is equal thickness shell, and hull outside is spliced by the short axles such as two, the semiellipse of Length discrepancy axis, shell both ends of the surface cover closure.The driving element and transition block form oscillator assembly, and oscillator assembly is placed in flextensional shell on equivalent long, and are rigidly connected with two perpendicular end surfaces are surveyed in shell.The present invention generates single order asymmetric bending mode using the asymmetry of shell structure, and using the coupling of single order asymmetric bending mode and first-order flexure mode, expands flextensional transducer bandwidth.It can be used for the fields such as Underwater Detection, confrontation, communication, measurement and exploration of ocean resources.
Description
Technical field
The present invention relates to a kind of underwater acoustic transducer more particularly to a kind of droplet-shaped flextensional transducers.
Background technology
It is well known that subsurface communication relies primarily on sound wave, the instrument that can generate sound wave under water is known as transmitting transducer.
For many years, researcher has been devoted to improve the performance of transmitting transducer, and the broadband for expanding energy converter is exactly one of them.
The research of wide-band transducer has great importance.First, wide-band transducer has excellent in terms of the transmission of signal
Gesture.Secondly, energy converter being capable of broadband emission so that transmitting signal is not limited to single product pulse, it is contemplated that transmitting FM signal.It is special
It is not for communication sonar, wide-band transducer can improve the transmission rate of signal, improve the reliability and confidentiality, drop of communication
Low error rate.
There are mainly three types of methods for the broadband emission of realization energy converter.
For single resonance operating transducers, can be opened up by improving radiation resistance, reducing architecture quality and reducing the rigidity of structure
Open up bandwidth.
Transducer combinations similar in frequency by two or more use, and can obtain the transmitting response in broadband.
The Raymond Porzio (US) of U.S. Lockheed Martin Corporation propose crack annulus and rare earth longitudinal direction group
Box-like wide-band transducer.
Multi-mode coupling can also realize the broadband emission of energy converter.Harbin Engineering University's indigo plant space is designed and has been made double
Shell flextensional transducer.Chen Si is designed and has been made piezoelectric monocrystal long axis extended type IV type flextensional transducers.
Invention content
The purpose of the invention is to provide a kind of droplet-shaped flextensional transducer, flextensional transducing is expanded by multi-mode coupling
The bandwidth of device.
The object of the present invention is achieved like this：Including radiation shell, a period of time assembly, the radiation shell is by two
Etc. short axles, Length discrepancy axis the equal thickness shell of water-drop-shaped that is spliced of semiellipse shell, a period of time assembly includes and spoke
Two transition blocks for penetrating the connection of shell inner surface circular arc, the driving element being arranged between two excessive blocks, in radiation shell
Upper and lower ends be respectively arranged with upper cover plate and lower cover, and it is real to pass through the cooperation of threaded rod screw thread between upper cover plate and lower cover
It now connects, end is provided on upper cover plate and hangs head, in junction, lower cover and the radiation of upper cover plate and radiation shell
The junction of shell is both provided with backing plate.
The invention also includes some such structure features：
1. the driving element includes the antiferroelectric brilliant heaps of PLZST, and the antiferroelectric brilliant heaps of the PLZST are by the anti-iron of N piece rectangles
Electroceramics piece is bonded, and wherein N is >=2 even number, and is also set up between each two antiferroelectric ceramics piece there are one electrode slice.
2. the driving element includes piezoelectric ceramics crystalline substance heap, and piezoelectric ceramics crystalline substance heap is bonded by N piece rectangular piezoelectric ceramic pieces
It forms, wherein N is >=2 even number, and is also set up between each two piezoelectric ceramic piece there are one electrode slice.
3. the driving element is to include rareearth super magnetostrictive stick, coil bone is cased with outside rareearth super magnetostrictive stick
Frame is wound with coil on coil rack, a piece of permanent magnetism piece, two panels permanent magnetism piece and correspondence is respectively arranged at rareearth super magnetostrictive stick both ends
Link block connection.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention utilizes the oval shell of the asymmetry of droplet-shaped flextensional
Body structure generates single order asymmetric bending mode, and using the coupling of single order asymmetric bending mode and first-order flexure mode, opens up
Open up flextensional transducer bandwidth.The droplet-shaped flextensional transducer of the present invention provides a kind of novel energy converter of asymmetric flextensional shell
Structure type.Asymmetric flextensional shell structure makes single order asymmetric curvature mode that can not be completely counterbalanced by vibrating effect,
To produce single order asymmetric curvature mode.By to the adjusting of asymmetric shell dimension may be implemented first-order flexure mode and
The coupling of single order asymmetric curvature mode, to realize the bandwidth broadning of flextensional transducer.The droplet-shaped flextensional transducing of the present invention
Device uses the basic principle of flextensional transducer, therefore has the advantages that low frequency, high-power, size is small, light-weight.The present invention's
Droplet-shaped flextensional transducer can be applied to the fields such as Underwater Detection, confrontation, communication, measurement and exploration of ocean resources.
Description of the drawings
Fig. 1 is the vertical view for the droplet-shaped flextensional transducer structural schematic diagram that the present invention makes driving element of antiferroelectric ceramics
Figure；
Fig. 2 is that the survey for the droplet-shaped flextensional transducer structural schematic diagram that the present invention does driving element with antiferroelectric ceramics regards
Figure；
Fig. 3 is the oscillator line schematic diagram that the present invention makes driving element of antiferroelectric ceramics；
Fig. 4 is the isometric view of the droplet-shaped flextensional transducer monnolithic case of the present invention；
Fig. 5 is that the transmitting voltage response for the droplet-shaped flextensional transducer that the present invention does driving element with antiferroelectric ceramics emulates
Curve；
Fig. 6 a and Fig. 6 b are respectively that the present invention makees the droplet-shaped flextensional transducer of driving element preceding two with antiferroelectric ceramics
Directivity pattern under a mode respective frequencies；
Fig. 7 is the structural representation for the droplet-shaped flextensional transducer that the present invention makes driving element of rareearth super magnetostrictive stick
Figure.
The meaning of each number is in attached drawing：1- droplet-shapeds radiate shell, 2- driving elements, 3- transition blocks, 4- cover boards, 5- pads
Plate, 6- threaded rods, 7- nuts, 8- cables, 9- ends, 10- hang head, 11- first-order flexure mode corresponds to response peak, 12- mono-
Rank asymmetric curvature mode corresponds to response peak, 13- coil racks, 14- permanent magnetism piece, 15- rareearth super magnetostrictives stick, 16- coils
Specific implementation mode
Present invention is further described in detail with specific implementation mode below in conjunction with the accompanying drawings.
With reference to figure 1, Fig. 2, Fig. 3, the droplet-shaped flextensional transducer of a present invention is made, including droplet-shaped radiates shell, mistake
Block and driving element are crossed, the outer edge of the thick shells such as droplet-shaped 1 is mutually spelled by the short axles such as two, the semiellipse of Length discrepancy axis,
Aluminum alloy materials are all made of to be process.Shell both ends of the surface cover plate for sealing；The driving element and transition block composition oscillator dress
Ligand, oscillator assembly are placed in flextensional shell on equivalent long, and are rigidly connected with inner walls.
It is preferred that the equivalent long of droplet-shaped flextensional transducer of the invention is that (left ellipse semi-major axis 172mm, the right side are ellipse by 270mm
Circle semi-major axis 98mm), public short axle is 120mm, thickness of shell 14mm, body height 90mm.
Driving element and transition block 3 form oscillator assembly, and transition block 3 is made of aluminium alloy.Oscillator assembly is indulged
It is slightly larger than to size or more than the distance between two perpendicular end surface of case inside long axis direction, is radiated by reducing droplet-shaped in advance
The equivalent short axle of shell, it is vertical that pressure caused by the growth using equivalent long makes oscillator assembly be fixed on case inside two
Between end face.
It is preferred that the longitudinal size of oscillator assembly is than the distance between two perpendicular end surface of long axis direction on the inside of transducer housing
Big 0.32mm.When assembling energy converter, the equivalent short-axis direction by radiating shell to droplet-shaped applies pressure, increases in shell
The distance between two perpendicular end surface of side long axis direction is allowed to the longitudinal size more than oscillator assembly, and oscillator assembly is placed in two
Between perpendicular end surface and release stress, at this time by prestressing force by assembly be fixed in transducer housing two perpendicular end surfaces it
Between, and be rigidly connected with transducer housing.
Energy converter is closed with cover board 4, and backing plate 5 is added between cover board 4 and transducer housing to play the work of sealing, vibration isolation
With.Cover board 4 is anchored on transducer housing both ends by the threaded rod 6 and nut 7 being distributed on the outside of transducer housing, makes energy converter
Inside forms occluded air chamber.It is equipped with end 9 on cover board 4 and hangs first 10.The backing plate 5 of the present embodiment uses silica gel plate,
Thickness is 5mm, and cover board 4 uses aluminum alloy materials, threaded rod 6 to use stainless steel material.
Driving element 2 is made of 100 rectangle PLZST antiferroelectric ceramics pieces, and antiferroelectric ceramics chip size is 30mm*
30mm*1mm, for antiferroelectric oscillator using being connected in parallel, wiring is as shown in Figure 2.The gold of brass material is pressed from both sides between antiferroelectric ceramics piece
Belong to thin slice, with welding lead, the size 30mm*30mm*0.1mm of sheet metal.With epoxy resin by antiferroelectric ceramics piece with gold
Belong to the alternate bonding one by one of thin slice and constitutes driving element.
When energy converter works, direct current biasing electric field and AC field are applied to antiferroelectric oscillator by cable 8, at this time anti-iron
Electricity generates periodical phase transformation so that whole antiferroelectric oscillator generates longitudinal extension vibration, passes through the machinery of driving element and shell
Coupling, the different vibration mode of shell can be inspired in different frequency ranges, using generation first-order flexure mode and
Single order asymmetric curvature modal coupling realizes the bandwidth broadning of energy converter.
The transmitting voltage response simulation curve of energy converter is as shown in Figure 5.In Fig. 5, the first rank resonance peak 11 is by energy converter
First-order bending vibration generates, and resonant frequency is about 1260Hz；Second-order resonance peak 12 is shaken by the single order asymmetric curvature of energy converter
Movable property is given birth to, and resonant frequency is about 2220Hz.In the frequency range of 1.08kHz~2.52kHz, the maximum of energy converter sends voltage
Respond 149.1dB (reference level 0dB：At 1pPa/V, 1m), maximum fluctuating 6.4dB is responded, the bandwidth of flextensional transducer may be implemented
It expands.
Directivity pattern under the first two mode respective frequencies of energy converter is as shown in figures 6 a and 6b.In first-order flexure mode
Under respective frequencies 1260Hz, the basic non-directive of energy converter；At single order asymmetric curvature mode respective frequencies 2220Hz, transducing
Device is in inclined " inclined splayed " directional property.
The droplet-shaped radiation shell 1 of the present invention, transition block 3 in addition to using aluminium alloy make it is outer can also using stainless steel,
Steel, titanium alloy, glass fibre or carbon fiber make.Droplet-shaped flextensional transducer can also use in addition to using cover plate for sealing to overflow
Streaming structure.
The driving element of the present invention includes piezoelectric ceramics crystalline substance heap, and piezoelectric ceramics is bonded by N piece rectangular piezoelectric ceramic pieces
It forms, the even number that wherein N is >=2, an electrode slice is laid between each two piezoelectric ceramic piece.
As shown in fig. 7, the driving element of the present invention uses rareearth super magnetostrictive stick 15, outside to be cased with coil rack 13,
It is wound with coil 16 on coil rack 13, a piece of permanent magnetism piece 14 is respectively placed at 15 both ends of rareearth super magnetostrictive stick.Rare-earth super-magnetic causes
Extension stem 15, permanent magnetism piece 14 and transition block 3 constitute oscillator assembly.The energy converter assembling process of the present embodiment and 1 phase of embodiment
Together.
When energy converter works, rareearth super magnetostrictive stick 15 is logical in the quiescent biasing magnetic field that permanent magnetism piece 14 provides and coil 14
Magnetostriction vibration is generated under the synergy in the dynamic driving magnetic field generated after electricity, passes through the mechanical coupling of driving element and shell
It closes, the different vibration mode of shell is inspired in different frequency ranges, it is non-using the first-order flexure mode and single order of generation
Symmetric curvature modal coupling realizes the broadband emission of energy converter.
Stainless steel, steel, admire alloy, aluminium alloy, glass fibre can be used in the droplet-shaped radiation shell, transition block, cover board
Or carbon fiber is made.
To sum up, the present invention provides a kind of droplet-shaped flextensional transducer.Including droplet-shaped radiation shell, transition block and driving member
Part：Droplet-shaped radiation shell is equal thickness shell, hull outside by the short axles such as two, the splicing of the semiellipse of Length discrepancy axis and
At shell both ends of the surface cover closure.The driving element and transition block form oscillator assembly, and oscillator assembly is placed in flextensional
In shell on equivalent long, and it is rigidly connected with two perpendicular end surfaces are surveyed in shell.The present invention utilizes the asymmetry of shell structure
Single order asymmetric bending mode is generated, and using the coupling of single order asymmetric bending mode and first-order flexure mode, expands flextensional
Transducer bandwidth.It can be used for the fields such as Underwater Detection, confrontation, communication, measurement and exploration of ocean resources.
Claims (4)
1. droplet-shaped flextensional transducer, it is characterised in that：Including radiation shell, a period of time assembly, the radiation shell is by two
The equal thickness shell of water-drop-shaped that is spliced of semiellipse shell of the short axles such as a, Length discrepancy axis, a period of time assembly include with
Two transition blocks of radiation shell inner surface circular arc connection, the driving element being arranged between two excessive blocks, in radiative envelope
The upper and lower ends of body are respectively arranged with upper cover plate and lower cover, and pass through the cooperation of threaded rod screw thread between upper cover plate and lower cover
It realizes connection, end is provided on upper cover plate and hangs head, in junction, lower cover and the spoke of upper cover plate and radiation shell
The junction for penetrating shell is both provided with backing plate.
2. droplet-shaped flextensional transducer according to claim 1, it is characterised in that：The driving element includes PLZST anti-
Ferroelectricity crystalline substance heap, and the antiferroelectric brilliant heaps of the PLZST are bonded by N piece rectangle antiferroelectric ceramics pieces, the even number that wherein N is >=2,
And electrode slice there are one being also set up between each two antiferroelectric ceramics piece.
3. droplet-shaped flextensional transducer according to claim 1, it is characterised in that：The driving element includes piezoelectric ceramics
Brilliant heap, and piezoelectric ceramics crystalline substance heap is bonded by N piece rectangular piezoelectric ceramic pieces, the even number that wherein N is >=2, and each two piezoelectricity
Electrode slice there are one being also set up between potsherd.
4. droplet-shaped flextensional transducer according to claim 1, it is characterised in that：The driving element be include that rare earth is super
Magnetostrictive rod, rareearth super magnetostrictive stick outside are cased with coil rack, coil are wound on coil rack, are stretched in rare-earth super-magnetic cause
A piece of permanent magnetism piece is respectively arranged in contracting stick both ends, and two panels permanent magnetism piece is connected with corresponding link block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810234796.5A CN108435523B (en) | 2018-03-21 | 2018-03-21 | Water drop type flextensional transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810234796.5A CN108435523B (en) | 2018-03-21 | 2018-03-21 | Water drop type flextensional transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108435523A true CN108435523A (en) | 2018-08-24 |
| CN108435523B CN108435523B (en) | 2020-06-16 |
Family
ID=63196004
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810234796.5A Active CN108435523B (en) | 2018-03-21 | 2018-03-21 | Water drop type flextensional transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108435523B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112954543A (en) * | 2021-01-22 | 2021-06-11 | 哈尔滨工程大学 | Double-end slotted piezoelectric circular ring underwater acoustic emission transducer |
| CN113301478A (en) * | 2021-05-16 | 2021-08-24 | 西北工业大学 | Reinforced concave cylinder type flextensional transducer structure and method |
| CN114029220A (en) * | 2021-08-24 | 2022-02-11 | 哈尔滨工程大学 | External drive transducer with periodic amplitude amplification structure and assembly method |
| CN115278419A (en) * | 2022-07-14 | 2022-11-01 | 哈尔滨工程大学 | Broadband underwater acoustic transducer |
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| US20140029386A1 (en) * | 2012-07-27 | 2014-01-30 | George Whitaker | Apparatus and Methods of Tuning and Amplifying Piezoelectric Sonic and Ultrasonic Outputs |
| CN106116573A (en) * | 2016-06-22 | 2016-11-16 | 成都宏明电子科大新材料有限公司 | A kind of pulse power capacitor device antiferroelectric ceramics powder body and preparation method thereof |
| CN107231594A (en) * | 2017-06-27 | 2017-10-03 | 哈尔滨工程大学 | Conformal driving IV type flextensional transducers |
| CN107274877A (en) * | 2017-06-06 | 2017-10-20 | 哈尔滨工程大学 | A kind of inverted phase type deep-sea flextensional underwater acoustic transducer |
-
2018
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|---|---|---|---|---|
| CN101964185A (en) * | 2010-09-03 | 2011-02-02 | 哈尔滨工程大学 | Ultra-wideband underwater acoustic transducer |
| US20140029386A1 (en) * | 2012-07-27 | 2014-01-30 | George Whitaker | Apparatus and Methods of Tuning and Amplifying Piezoelectric Sonic and Ultrasonic Outputs |
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| CN113301478A (en) * | 2021-05-16 | 2021-08-24 | 西北工业大学 | Reinforced concave cylinder type flextensional transducer structure and method |
| CN114029220A (en) * | 2021-08-24 | 2022-02-11 | 哈尔滨工程大学 | External drive transducer with periodic amplitude amplification structure and assembly method |
| CN115278419A (en) * | 2022-07-14 | 2022-11-01 | 哈尔滨工程大学 | Broadband underwater acoustic transducer |
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