CN103580533A - Double-wing type linear ultrasonic motor - Google Patents
Double-wing type linear ultrasonic motor Download PDFInfo
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- CN103580533A CN103580533A CN201310389544.7A CN201310389544A CN103580533A CN 103580533 A CN103580533 A CN 103580533A CN 201310389544 A CN201310389544 A CN 201310389544A CN 103580533 A CN103580533 A CN 103580533A
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- stator
- double
- ultrasonic motor
- vane
- linear ultrasonic
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Abstract
The invention relates to a double-wing type linear ultrasonic motor. The double-wing type linear ultrasonic motor comprises a stator and a rotor. The stator is a hollow cylinder provided with double wings, internal threads are machined in a round hole of the stator, piezoelectric ceramic pieces are boned on the upper surfaces and the lower surfaces of the double wings of the stator, the rotor is a cylinder provided with external threads, and the stator and the rotor are matched in a screwing mode through the threads. Motor working vibration modes are as follows: when the double wings of the stator bend and vibrate in the same direction, a first working vibration mode of the stator is motivated; when the double wings of the stator bend and vibrate in the reversed direction, a second working vibration mode of the stator is motivated. The two working vibration modes of the stator are excited by utilizing two phases of sinusoidal signals with phase difference, the two working vibration modes can have proper response phase difference, and the stator will drive the rotor to carry out rotation linear movements. The linear ultrasonic motor is large in thrust-weight ratio, high in work efficiency, simple in manufacturing process and low in cost, and miniaturization can be achieved easily.
Description
Technical field
The present invention relates to a kind of linear ultrasonic motor, particularly a kind of Double-wing linear ultrasonic motor.
Background technology
Linear ultrasonic motor is with respect to electromagnetic type linear electric motors, have controllability good, cut off self-lock, low speed output, without advantages such as electromagnetic interference.In fields such as precision driving, instrument and meter, intelligent robot, Aero-Space, have wide practical use.Current domestic linear ultrasonic motor technology is fast-developing, and miniature screw thread linear ultrasonic motor receives much concern.National patent CN200480032928.2 proposes a kind of screw rod linear ultrasonic motor, and this motor utilizes the work of two single order bending vibration modes, drives thread spindle along rotating shaft direction traveling priority.National patent CN200510114849.2, CN200720172974.3 have proposed a kind of polyhedron linear ultrasonic motor, and stator, by exciting the capable ripple of its in-plane bending, drives mover to rotate also rectilinear motion vertically.National patent CN200920106281.3 proposes the fixing screw-thread linear ultrasonic motor in a kind of one end or middle part, and it utilizes two bending vibration modes work, and drive screw is rectilinear motion vertically.National patent CN201110120487.3 discloses a kind of MODAL TRANSFORMATION OF A type linear ultrasonic motor, and it is converted to torsional oscillation by longitrorse MODAL TRANSFORMATION OF A device by extensional vibration, drives mover to rotate also rectilinear motion vertically.National patent CN201210371158.0 discloses screw-thread linear ultrasonic motor, and its screw thread pair is removable.These screw thread pairs drive linear ultrasonic motors have the speed of service low without slowing down, positioning precision is high, be easy to the features such as microminiaturized.But the current development along with personal portable electronic equipment and micromachine product, list has proposed requirement to electric machine structure microminiaturization, low cost of manufacture, and for the narrow installation space of distinct electronic apparatuses, the miniature linear that needs more structural styles, merging integratedly with electronic equipment, reduce overall volume.Meanwhile, the requirements such as large power output, low energy consumption, high workload efficiency also miniature linear have been proposed.
Summary of the invention
The present invention is directed to the deficiency in prior art, propose a kind of simple in structure, be easy to the Double-wing linear ultrasonic motor made, thrust-weight ratio is large, operating efficiency is high.
A linear ultrasonic motor, comprises stator and mover.For achieving the above object, the present invention adopts following technical proposals: it is characterized in that: described stator be one with the hollow cylinder of double-vane, in its circular hole, be processed with internal thread, the upper and lower surface of double-vane is pasted with piezoelectric ceramic piece, or, only upper surface or the lower surface at double-vane is pasted with piezoelectric ceramic piece, and mover is to be with externally threaded cylinder, and stator and mover screw by screw thread.
Above-mentioned Double-wing linear ultrasonic motor, is characterized in that: its operational vibration mode is: when stator double-vane is in the same way during flexural vibrations, excite stator first job mode of oscillation, side-to-side movement is carried out in hollow cylinder rear and front end; When the back-flexing of stator double-vane is vibrated, excite second operational vibration mode of stator, hollow cylinder rear and front end moves up and down.
Above-mentioned Double-wing linear ultrasonic motor, it is characterized in that: its function mode is: utilize sinusoidal signal to left wing's piezoelectric ceramic piece power supply, utilization has another sinusoidal signal of certain phase difference to power to right flank piezoelectric ceramic piece, inspire two of stator with frequency operational vibration mode, make stator rear and front end drive particle to produce elliptic motion, and drive mover to be rotated rectilinear motion.By changing the phase difference of two sinusoidal signals, the response phase that changes two operational vibration mode is poor, can realize the motion of mover reverse linear.
The present invention compared with prior art, has following apparent outstanding substantive distinguishing features and remarkable advantage: (1) structure innovation.The hollow cylinder structure of motor stator band double-vane has been amplified the effect of motor conversion by double-vane, be beneficial to more electric energy and be converted to vibrational energy, and make the vibrational energy of double-vane be gathered in hollow cylinder structure, to drive mover to rotatablely move.This structure is beneficial to power output, the raising thrust-weight ratio that improves miniature screw thread linear electric motors.(2) operational vibration mode innovation.By double-vane in the same way with the coordinating of reversal deformation, realize the elliptic motion that hollow cylinder structure front and back end drives particle, promote the forward and reverse rectilinear motion of mover.That motor of the present invention has is simple in structure, be easy to that miniaturization, power output and thrust-weight ratio are large, the direct feature such as driving of operating efficiency high, low speed.
Accompanying drawing explanation
Fig. 1 is Double-wing linear ultrasonic motor structural representation of the present invention.
Fig. 2 is the bending vibation mode picture of linear ultrasonic motor stator first job mode of the present invention.
Fig. 3 is the bending vibation mode picture of second operation mode of linear ultrasonic motor stator of the present invention.
Fig. 4 is linear ultrasonic motor electric excitation winding diagram of the present invention and piezoelectric ceramic piece polarised direction schematic diagram, and in figure, arrow represents the polarised direction of piezoelectric ceramic piece.
Fig. 5 is linear ultrasonic motor operation principle schematic diagram of the present invention, and wherein elliptical orbit is the movement locus that stator hollow cylinder structure front end drives particle.
Embodiment
Details are as follows by reference to the accompanying drawings for the preferential embodiment of the Double-wing linear ultrasonic motor that the present invention proposes:
Embodiment mono-:
This Double-wing linear ultrasonic motor as shown in Figure 1.Its feature: stator 11 be one with the hollow cylinder of double-vane, in its circular hole, be processed with internal thread, the upper and lower surface of double-vane is pasted with piezoelectric ceramic piece 13,14,15,16, or, only upper surface or the lower surface at double-vane is pasted with piezoelectric ceramic piece, mover 12 is to be with externally threaded cylinder, and stator and mover screw by screw thread.Stator drives mover rotational motion to linear motion, 31 direction of rotation that are mover in Fig. 1,32 linear movement directions that are mover.
Embodiment bis-: the present embodiment and embodiment mono-are basic identical, and special feature is as follows:
The vibration shape of two operation modes that this Double-wing linear ultrasonic motor utilizes as shown in Figures 2 and 3.Its feature of the operation mode of Fig. 2: stator double-vane is in the same way during flexural vibrations, and side-to-side movement is carried out in hollow cylinder rear and front end.When wherein double-vane is crooked to the right, hollow cylinder rear and front end is to left movement; When wherein double-vane is crooked to the left, hollow cylinder rear and front end moves right.Its feature of the operation mode of Fig. 3: during stator double-vane back-flexing vibration, hollow cylinder rear and front end moves up and down.Its left-wing is when bending and right flank are crooked to the right to the left, and hollow cylinder rear and front end moves upward; Left wing is when bending and right flank are crooked to the left to the right, and hollow cylinder rear and front end moves downward.
Embodiment tri-: the present embodiment and embodiment bis-are basic identical, and special feature is as follows:
The concrete arrangement of a kind of piezoelectric ceramic piece of described Double-wing linear ultrasonic motor and the signal of telecommunication excitation mode of connection are as shown in Figure 4.The both sides of motor left wing are pasted with piezoelectric ceramic piece 13,14, and the both sides of right flank are pasted with piezoelectric ceramic piece 15,16, and the polarised direction of piezoelectric ceramic piece is as shown in Fig. 4 arrow.Piezoelectric ceramic piece 13 or 14 is only pasted by Ye Ke left wing, and right flank is only pasted with piezoelectric ceramic piece 15 or 16.When signal input part 1 access sine voltage signal
e=
w 0sin (ω t), signal input part 2 access sine voltage signals
e=
w 0sin (ω t+
φ), signal input part 3 ground connection, can motivate two operational vibration mode of stator, and their response phase is poor is
φ.Phase difference when two sinusoidal electric signals
φwhile getting fit value, stator drives rotor rectilinear motion.By changing the phase difference of two sinusoidal signals
φ, the response phase that can change two operational vibration mode is poor, realizes the motion of mover reverse linear.
Fig. 5 is Double-wing linear ultrasonic motor operation principle schematic diagram, and the arrangement of motor stator piezoelectric ceramic piece as Fig. 4, provides driving signal to signal input part 1 with driving signal loading mode
e=
w 0sin (ω t) provides driving signal to signal input part 2 simultaneously
e=
w 0cos (ω t), signal input part 3 ground connection.Figure 5 shows that stator drives particle to drive the schematic diagram of one work period of mover.State (1)-state (2)-state (3) is rotated counterclockwise a step-length for stator drives mover, and the angle of rotation is converted to the axial rectilinear motion of mover by threaded function.State (3)-state (4)-state (1) resets for stator departs from mover, prepares the driving in next cycle.So high frequency repeats, and can make mover continue to be rotated counterclockwise rectilinear motion.When driving signal being provided to signal input part 1
e=
w 0cos (ω t) provides driving signal to signal input part 2 simultaneously
e=
w 0sin (ω t), signal input part 3 ground connection, can realize the motion of mover reverse linear.
Claims (3)
1. a Double-wing linear ultrasonic motor, comprise stator (11) and mover (12), it is characterized in that: described stator (11) be one with the hollow cylinder of double-vane, in its circular hole, be processed with internal thread, the upper and lower surface of double-vane is pasted with piezoelectric ceramic piece (13,14,15,16), or only upper surface or the lower surface at double-vane is pasted with piezoelectric ceramic piece, mover (12) is to be with externally threaded cylinder, and stator (11) screws by screw thread with mover (12).
2. Double-wing linear ultrasonic motor as claimed in claim 1, it is characterized in that: its operational vibration mode is: the double-vane on stator (11) (13,14,15,16) is in the same way during flexural vibrations, excite stator first job mode of oscillation, side-to-side movement is carried out in hollow cylinder rear and front end; During the double-vane on stator (11) (13,14,15,16) back-flexing vibration, excite second operational vibration mode of stator, hollow cylinder rear and front end moves up and down.
3. Double-wing linear ultrasonic motor as claimed in claim 1, it is characterized in that: its function mode is: utilize the dephased sinusoidal signal of two-phase tool respectively to piezoelectric ceramic piece (13,14,15, the 16) power supply on the double-vane of left and right, motivate two operational vibration mode of stator (11), make them have the response phase of design poor, stator will drive mover (12) to be rotated rectilinear motion; By changing the phase difference of two sinusoidal signals, poor to change the response phase of two operational vibration mode, can realize the motion of mover reverse linear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310389544.7A CN103580533B (en) | 2013-09-02 | 2013-09-02 | Double-wing linear ultrasonic motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310389544.7A CN103580533B (en) | 2013-09-02 | 2013-09-02 | Double-wing linear ultrasonic motor |
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| Publication Number | Publication Date |
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| CN103580533A true CN103580533A (en) | 2014-02-12 |
| CN103580533B CN103580533B (en) | 2015-12-23 |
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| CN201310389544.7A Active CN103580533B (en) | 2013-09-02 | 2013-09-02 | Double-wing linear ultrasonic motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112383242A (en) * | 2020-12-09 | 2021-02-19 | 哈尔滨工业大学 | Linear ultrasonic motor stator with empennage and thin plate frame structure and excitation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1767347A (en) * | 2005-11-18 | 2006-05-03 | 清华大学 | Screw thread driven polyhedron ultrasonic motor |
| CN102177648A (en) * | 2008-08-18 | 2011-09-07 | 新阶科技股份有限公司 | Reduced-voltage, linear motor systems and methods thereof |
| CN102868315A (en) * | 2012-10-12 | 2013-01-09 | 哈尔滨工业大学 | Paster-type bending vibration composite dual-feet ultrasound motor oscillator |
-
2013
- 2013-09-02 CN CN201310389544.7A patent/CN103580533B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1767347A (en) * | 2005-11-18 | 2006-05-03 | 清华大学 | Screw thread driven polyhedron ultrasonic motor |
| CN102177648A (en) * | 2008-08-18 | 2011-09-07 | 新阶科技股份有限公司 | Reduced-voltage, linear motor systems and methods thereof |
| CN102868315A (en) * | 2012-10-12 | 2013-01-09 | 哈尔滨工业大学 | Paster-type bending vibration composite dual-feet ultrasound motor oscillator |
Non-Patent Citations (2)
| Title |
|---|
| WON-HEE LEE ET AL.: "Butterfly-shaped ultra slim piezoelectric ultrasonic linear motor", 《SENSORS AND ACTUATORS》 * |
| 周铁英等: "螺母型超声电机驱动的集成透镜调焦系统", 《中国科学》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112383242A (en) * | 2020-12-09 | 2021-02-19 | 哈尔滨工业大学 | Linear ultrasonic motor stator with empennage and thin plate frame structure and excitation method thereof |
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| CN103580533B (en) | 2015-12-23 |
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