CN103746597B - SMD T-shaped dual-feet linear piezoelectric supersonic motor vibrator - Google Patents
SMD T-shaped dual-feet linear piezoelectric supersonic motor vibrator Download PDFInfo
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- CN103746597B CN103746597B CN201410039771.1A CN201410039771A CN103746597B CN 103746597 B CN103746597 B CN 103746597B CN 201410039771 A CN201410039771 A CN 201410039771A CN 103746597 B CN103746597 B CN 103746597B
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- 239000000919 ceramic Substances 0.000 claims abstract description 31
- 230000010287 polarization Effects 0.000 claims abstract description 4
- 230000005284 excitation Effects 0.000 claims description 11
- 239000011159 matrix material Substances 0.000 claims description 8
- 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
- 238000000034 method Methods 0.000 abstract description 9
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000003213 activating effect Effects 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 206010049214 Monopodia Diseases 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Abstract
SMD T-shaped dual-feet linear piezoelectric supersonic motor vibrator, belongs to piezoelectric ultrasonic motor technical field.It is in order to solve the problems, such as vibrational energy present in existing T-shaped linear ultrasonic motor oscillator leave unused waste, driving method is complicated and there is vibration coupling.SMD T-shaped dual-feet linear piezoelectric supersonic motor vibrator of the present invention, the small end face of longeron is vertically fixed on the one side of crossbeam, and longitudinal and cross beam constitutes T-type structure；Crossbeam be respectively arranged at two ends with horn, the big end of horn is fixedly connected with crossbeam；Two piezoelectric ceramic pieces are separately fixed on the upper and lower end face of crossbeam；The equal through-thickness polarization of described two panels piezoelectric ceramic piece, and the polarised direction of two panels piezoelectric ceramic piece is contrary.Both sides horn is all used for activating output, there is not the idle waste problem of vibrational energy；And the extensional vibration of a crossbeam, there is not vibration coupling problem so that motor performance is improved.The present invention is applied to the making of microminiature piezoelectric ultrasonic motor.
Description
Technical field
The invention belongs to piezoelectric ultrasonic motor technical field.
Background technology
Piezoelectric ultrasonic motor is a kind of inverse piezoelectric effect of utilization piezoelectric ceramics, motivates in the elastomer in supersonic range
Vibration, form the particle movement with particular track in surface of elastomer specified point or specific region, so by stator, turn
The microscopic motion of particle is converted into the macroscopic motion of rotor by the friction coupling between son, has that structure is simple, flexible design, low
Speed big torque/thrust, power/torque density height, positioning precision height, fast response time, cut off self-lock, no electromagnetic interference and not being subject to
The advantages of electromagnetic interference.
In Publication No. CN101630924, the patent application of invention entitled " T-shaped linear ultrasonic motor oscillator ", first
Propose a kind of T-shaped monopodia linear piezoelectric ultrasonic motor oscillator, longitudinal using horizontal sandwich converter and vertical sandwich converter
The compound of vibration achieves the efficient excitation driving foot to locate elliptic vibrations, has mechanical-electric coupling efficiency high, achievable pushes away greatly
Power output, stable performance, easily controllable, can producing in serial form advantage；But, the vibrational energy at its three rear end caps is not
Have for activating output, there is the idle waste problem of vibrational energy；Additionally, this motor needs to carry out using two-phase alternating current pressure
Excitation, vertical transducer is used for the excitation realizing driving vertical direction vibration at foot, and horizontal transducer is used for realizing driving at foot
The excitation of horizontal direction vibration, motivational techniques are complex, and driving power supply is also complex, vertical transducer and horizontal transducer
On the obvious coupling of all generations give birth to bending vibration, vibration coupling phenomenon is fairly obvious.
Content of the invention
The present invention is that vibrational energy present in existing T-shaped linear ultrasonic motor oscillator is idle to be wasted, drive in order to solve
Method is complicated and there is vibration coupling, now provides SMD T-shaped dual-feet linear piezoelectric supersonic motor vibrator.
SMD T-shaped dual-feet linear piezoelectric supersonic motor vibrator, it includes matrix and two panels piezoelectric ceramic piece；
Described matrix includes：Longeron, crossbeam and two horn；
Described crossbeam be shaped as cuboid；
The block that described horn tapers into for section,
One end of longeron is vertically fixed on a side of crossbeam so that longitudinal and cross beam constitutes T-type structure；
Described crossbeam be respectively arranged at two ends with horn, the big end of horn is fixedly connected with crossbeam；
Two piezoelectric ceramic pieces are separately fixed on the upper and lower surface of crossbeam；
The equal through-thickness polarization of described two panels piezoelectric ceramic piece, and the polarised direction of two panels piezoelectric ceramic piece is contrary；
Crossbeam 1-2 is connected with the common port of driving power supply, and the outer surface of two panels piezoelectric ceramic piece 2 is all with drive signal even
Connect.
Above-mentioned matrix is integral type structure.
The shape of above-mentioned two piezoelectric ceramic piece is identical, and the area of the cross section of described piezoelectric ceramic piece is less than
Area equal to this piezoelectric ceramic piece place beam surface.
SMD T-shaped dual-feet linear piezoelectric supersonic motor vibrator of the present invention, only with single-phase alternating current during work
Pressure signal enters row energization, motivational techniques very simple, realizes piezoelectric metal composite beam by the stretching vibration of piezoelectric ceramic piece
The excitation of extensional vibration；During real work, the lower end of longeron is fixedly connected with outer base, and this makes in the oscillator in the present invention
The vibration shape (referring to Fig. 2) of the extensional vibration of composite beam creates significantly with respect to the free beam extensional vibration vibration shape (referring to Fig. 3)
Change.For free beam extensional vibration, the vibration displacement of horn end is along beam axis direction；And in the present invention
Oscillator in composite beam extensional vibration for, because longeron employs fixing boundary condition, the vibration position of horn end
Move and do not only have axial component, have cross stream component simultaneously；The cross stream component of horn end can be used for promoting mover to realize straight line
Movement output, and axial component is then used for overcoming the precompression between mover and oscillator, referring to Fig. 4.Paster of the present invention
The T-shaped dual-feet linear piezoelectric supersonic motor vibrator of formula, both sides horn may be used to activate output, and capacity usage ratio is high, does not deposit
Idle waste problem in vibrational energy；Additionally, the extensional vibration only with a crossbeam achieves horn terminal slope line rail
, there is not vibration coupling problem in the excitation of mark vibration, be conducive to improving the conversion efficiency of energy, so that structure has been obtained very big yet
Simplification in degree, process and assemble also very simple；Horn can play the work of amassing wealth by heavy taxation of vibrational energy using variable cross-section design
With the amplitude driving sufficient surface particle and vibration velocity can be improved so that motor performance is improved.
SMD T-shaped dual-feet linear piezoelectric supersonic motor vibrator of the present invention, both sides horn can be used for causing
Dynamic output, capacity usage ratio is high, there is not the idle waste problem of vibrational energy；Additionally, the present invention is only with a crossbeam
Extensional vibration achieves the excitation of horn terminal slope line track vibration, there is not vibration coupling problem, is conducive to improving energy
Conversion efficiency, also make the simplification that structure has obtained largely, process and assemble also very simple；Horn is cut using change
Face design can play the amassing wealth by heavy taxation effect of vibrational energy, can improve the amplitude driving foot surface particle and vibration velocity so that motor
Can be improved.Additionally, make the ultrasonic motor oscillator processing and assembling very simple of the present invention using paster structure design,
It is applied to the making of microminiature piezoelectric ultrasonic motor.
SMD T-shaped dual-feet linear piezoelectric supersonic motor vibrator of the present invention, by using fixed boundary condition
Method achieves the function that single longitudinal vibration transducer bilateral drives sufficient linear actuation output, and structure is simple, and process and assemble is very easy,
Motivational techniques are simple, and capacity usage ratio is high, and are easily achieved miniaturization and integrated.
Brief description
Fig. 1 is the perspective view of SMD T-shaped dual-feet linear piezoelectric supersonic motor vibrator of the present invention；
Fig. 2 be SMD T-shaped dual-feet linear piezoelectric supersonic motor vibrator of the present invention operationally, using shake
The bending vibation mode picture of dynamic model state；
Fig. 3 pushes the bending vibation mode picture of electric transducer longitudinal vibration mode for free boundary condition；
Fig. 4 is to drive mover to realize the operation principle schematic diagram of linear motion, in figure horizontal arrow when oscillator shown in Fig. 1 works
Head represents applying precompression in the horizontal direction, and longitudinal arrow represents that mover is vertically moving.
Specific embodiment
Specific embodiment one：Illustrate present embodiment with reference to Fig. 1, SMD T-shaped double described in present embodiment
Sufficient linear piezoelectric ultrasonic motor oscillator, it includes matrix 1 and two panels piezoelectric ceramic piece 2；
Described matrix 1 includes：Longeron 1-1, crossbeam 1-2 and two horn 1-3；
Described crossbeam 1-2 is shaped as cuboid；
The block that described horn 1-3 tapers into for section,
One end of longeron 1-1 is vertically fixed on a side of crossbeam 1-2 so that longeron 1-1 and crossbeam 1-2 constitutes T
Type structure；
Described crossbeam 1-2 is respectively arranged at two ends with horn 1-3, and the big end of horn 1-3 is fixedly connected with crossbeam 1-2；
Two piezoelectric ceramic pieces 2 are separately fixed on the upper and lower surface of crossbeam 1-2；
The equal through-thickness polarization of described two panels piezoelectric ceramic piece 2, and the polarised direction of two panels piezoelectric ceramic piece 2 is contrary.
The SMD T-shaped dual-feet linear piezoelectric supersonic motor vibrator of present embodiment when application, crossbeam 1-2 and drive
The common port in galvanic electricity source connects, and the outer surface of two panels piezoelectric ceramic piece 2 is all connected with drive signal.
In present embodiment, only with two panels piezoelectric ceramic piece 2, crossbeam be can achieve using the excitation of single phase ac signal
Extensional vibration, and then achieve the excitation of horn terminal slope line track vibration, type of drive is simple and there is not vibration coupling
Conjunction problem.
Specific embodiment two：Present embodiment is to the SMD T-shaped double-pin linear pressure described in specific embodiment one
Electric ultrasonic motor oscillator is described further, and in present embodiment, described matrix 1 is integral type structure.
In present embodiment, described longeron 1-1, crossbeam 1-2 and two horn 1-3 are integrated part, so can simplify
Processing and assembly technology.
Specific embodiment three：Present embodiment is straight to the SMD T-shaped biped described in specific embodiment one or two
Line piezoelectric ultrasonic motor oscillator is described further, in present embodiment, the complete phase of shape of described two piezoelectric ceramic pieces 2
With, and the area of the cross section of described piezoelectric ceramic piece 2 is less than or equal to the face on this piezoelectric ceramic piece 2 place crossbeam 1-2 surface
Long-pending.
In present embodiment, described piezoelectric ceramic piece 2 is less than or equal to the block of crossbeam 1-2 cross-sectional area for cross-sectional area,
So be conducive to the efficient excitation of extensional vibration.
Claims (3)
1. SMD T-shaped dual-feet linear piezoelectric supersonic motor vibrator is it is characterised in that it includes matrix (1) and two panels piezoelectricity pottery
Ceramics (2)；
Described matrix (1) includes：Longeron (1-1), crossbeam (1-2) and two horn (1-3)；
Described crossbeam (1-2) be shaped as cuboid；
The block that described horn (1-3) tapers into for section,
One end of longeron (1-1) is vertically fixed on a side of crossbeam (1-2) so that longeron (1-1) and crossbeam (1-2) structure
Become T-type structure；
Described crossbeam (1-2) be respectively arranged at two ends with horn (1-3), the big end of horn (1-3) is fixing with crossbeam (1-2) even
Connect；
Two piezoelectric ceramic pieces (2) are separately fixed on the upper and lower surface of crossbeam (1-2)；
The all through-thickness polarization of described two panels piezoelectric ceramic piece (2), and the polarised direction of two panels piezoelectric ceramic piece (2) is contrary；
Crossbeam 1-2 is connected with the common port of driving power supply, and the outer surface of two panels piezoelectric ceramic piece 2 is all connected with drive signal, and
Enter row energization only with single-phase AC voltage signal, can achieve the extensional vibration of crossbeam using the excitation of single phase ac signal；
The lower end of longeron is fixedly connected with outer base.
2. SMD T-shaped dual-feet linear piezoelectric supersonic motor vibrator according to claim 1 is it is characterised in that described base
Body (1) is integral type structure.
3. SMD T-shaped dual-feet linear piezoelectric supersonic motor vibrator according to claim 1 and 2 is it is characterised in that described
The shape of two piezoelectric ceramic pieces (2) is identical, and the area of the cross section of described piezoelectric ceramic piece (2) is less than or equal to be somebody's turn to do
The area on piezoelectric ceramic piece (2) place crossbeam (1-2) surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410039771.1A CN103746597B (en) | 2014-01-27 | 2014-01-27 | SMD T-shaped dual-feet linear piezoelectric supersonic motor vibrator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410039771.1A CN103746597B (en) | 2014-01-27 | 2014-01-27 | SMD T-shaped dual-feet linear piezoelectric supersonic motor vibrator |
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| CN103746597A CN103746597A (en) | 2014-04-23 |
| CN103746597B true CN103746597B (en) | 2017-03-01 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105587617B (en) * | 2015-05-08 | 2019-07-09 | 长春工业大学 | The active hydraulic jet propulsion system of longitudinal vibration patch type and its driving method |
| CN105587625A (en) * | 2015-05-08 | 2016-05-18 | 长春工业大学 | Surface mount sandwich type longitudinal bending complex excitation active water spraying propulsion device and driving method thereof |
| CN105587599A (en) * | 2015-05-08 | 2016-05-18 | 长春工业大学 | Longitudinal vibration patch type passive jet propulsion device and driving method thereof |
| CN105141174B (en) * | 2015-09-07 | 2017-10-31 | 南京航空航天大学 | A kind of SMD standing-wave rotation type piezoelectric actuator |
| CN106505907B (en) * | 2017-01-05 | 2018-06-12 | 南京工程学院 | It is a kind of can two-way linear operation single-phase supersonic motor |
| CN106956284B (en) * | 2017-04-28 | 2023-07-21 | 南京航空航天大学 | Deep sea full-open type mechanical finger structure and working mode thereof |
| CN109067238A (en) * | 2018-08-02 | 2018-12-21 | 哈尔滨工程大学 | A kind of patch type four-footed piezoelectric actuation mechanism |
| CN109013259B (en) * | 2018-08-09 | 2020-04-07 | 中南大学 | Large-amplitude vibration amplitude transformer for ultrasonic high-speed vibration auxiliary processing |
| CN113595439A (en) * | 2020-04-30 | 2021-11-02 | 华侨大学 | Circular patch type double-foot linear ultrasonic motor and stator thereof |
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| JP3200316B2 (en) * | 1994-12-26 | 2001-08-20 | キヤノン株式会社 | Vibration actuator |
| DE102008026429A1 (en) * | 2008-06-02 | 2009-12-10 | Physik Instrumente (Pi) Gmbh & Co. Kg | ultrasonic actuator |
| CN102361412A (en) * | 2011-10-18 | 2012-02-22 | 哈尔滨工业大学 | Patch type rectangular four-foot linear ultrasonic motor vibrator |
| CN102437783B (en) * | 2011-12-22 | 2014-10-08 | 哈尔滨工业大学 | Surface mount type I-shaped four-footed linear ultrasonic motor vibrator |
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