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Patch-type ultrasonic motor, and drive platform and drive method thereof

A technology of ultrasonic motor and driving platform, which is applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., which can solve the problem of small vibration amplitude and unsatisfactory output performance of ultrasonic motor , The effective contact area is small and other problems, to achieve the effect of large vibration amplitude, improved output performance of the whole machine, large application and development prospects

Inactive Publication Date: 2016-01-20
CHANGCHUN UNIV OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] In order to solve the technical problems such as the unsatisfactory overall output performance of the ultrasonic motor due to the small effective contact area between the stator and the rotor or the small vibration amplitude for the ultrasonic motor using the beam structure elastic body or the plate structure elastic body alone, the present invention discloses A patch type ultrasonic motor, driving platform and driving method thereof

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  • Patch-type ultrasonic motor, and drive platform and drive method thereof
  • Patch-type ultrasonic motor, and drive platform and drive method thereof
  • Patch-type ultrasonic motor, and drive platform and drive method thereof

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specific Embodiment approach 1

[0030] Specific implementation mode one: combine Figure 1~Figure 7 , Figure 10~Figure 12 This embodiment will be described. This embodiment provides a specific implementation of a patch type ultrasonic motor. The patch type ultrasonic motor is mainly composed of a fixed base 1, a first elastic body 2, a second elastic body 3, a rotating body 4, a key 5, a thrust ball bearing 6, a butterfly spring 7, a nut 8 and an output shaft 9.

[0031] The fixed base 1 is a plate structure, and the end surface of one side of the fixed base 1 is evenly provided with n through holes 1-1 structures along the circumferential direction, which are used to realize the fixed installation of the present invention, wherein n is greater than or equal to 1 The fixed base 1 is provided with a threaded hole 1-2 structure at the center of the surface of one side end, which is used for screwing connection with the external thread 2-1 structure at the side end of the first elastic body 2 to realize the ...

specific Embodiment approach 2

[0037] Specific implementation mode two: combination Figure 13~Figure 19 This embodiment will be described. This implementation mode provides a specific implementation scheme of a driving platform using a patch type ultrasonic motor. The driving platform using a patch type ultrasonic motor is mainly composed of a fixed outer frame 1, a first elastic body 2, a second elastic body 3, a rotating platform 4, a rolling body 5, a thrust ball bearing 6, a butterfly spring 7, Composed of fastening connectors 8 and hexagon socket head cap bolts 9, the structural composition and connection method of the second elastic body 3 in the driving platform using a chip-type ultrasonic motor is the same as that of the second elastic body 3 in the first embodiment.

[0038] The fixed outer frame 1 is a thin-walled ring structure with a flange at one end, and q through holes 1-1 structures are evenly arranged around the flange of the fixed outer frame 1 along the circumferential direction, which...

specific Embodiment approach 3

[0043] Specific Embodiment 3: This embodiment provides a specific implementation scheme of a chip-type ultrasonic motor and a driving method of a driving platform using the motor.

[0044] The specific implementation of the patch-type ultrasonic motor and the driving method of the driving platform using the motor is: the excitation group A passes an AC excitation electrical signal of a certain ultrasonic frequency (generally greater than 16kHz), and the The longitudinal vibration excited by the excitation group A excites the second elastic body 3 to generate a bending vibration mode, and the torsional vibration excited by the excitation group A excites the first elastic body 2 to generate a torsional vibration mode, and the superposition and coupling of the vibration modes are used , forming a driving friction force on the contact surface between the second elastic body 3 and the rotating body 4 or the rotating platform 4, and by adjusting the phase difference of the AC excitat...

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Abstract

The invention discloses a patch-type ultrasonic motor, and a drive platform and a drive method thereof and aims at solving the technical problem that the ultrasonic motor which individually adopts a beam structure or disk structure elastomer is not ideal in overall output performance and the like. The patch-type ultrasonic motor comprises a fixed base, a first elastomer, a second elastomer, a rotating body, keys, a thrust ball bearing, a belleville spring, a nut and an output shaft, wherein the first elastomer is in a beam structure; the second elastomer is in a slab structure; a d<31> excitation mode is adopted by a rectangular piezoelectric ceramic piece; a deformation direction of the rectangular piezoelectric ceramic piece and the axis of the first elastomer are arranged at a + / -alpha angle; an excitation signal of an ultrasonic band is applied to the piezoelectric ceramic piece; the first elastomer and the second elastomer are excited to generate longitudinal and flexural vibration modes respectively; drive friction force is generated by superposing and coupling of the vibration modes; and movement outputs of the patch-type ultrasonic motor are achieved. The patch-type ultrasonic motor has the technical advantages of high output power, stable motor operation, wide application range and the like, and has a wide application prospect in the technical fields of precision driving and micro positioning.

Description

technical field [0001] The invention relates to a patch type ultrasonic motor, a driving platform and a driving method thereof, and belongs to the technical field of precision driving and micro-positioning. Background technique [0002] The ultrasonic motor is a micro motor that uses the inverse piezoelectric effect of the piezoelectric element to excite the elastic body to generate a small ultrasonic vibration, and realizes the output of mechanical energy through frictional coupling. Compared with the traditional electromagnetic motor, it is widely used in the field of precision drive and micro-positioning technology because of its technical advantages such as easy miniaturization of structure, fast response speed, and no electromagnetic interference. According to the structural form of the elastic body (or stator) and the driving excitation mode, ultrasonic motors mainly include beam-structure elastic body ultrasonic motors and plate-structure elastic body ultrasonic motor...

Claims

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Application Information

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IPC IPC(8): H02N2/10H02N2/12
Inventor 程廷海高智王良何丽鹏张邦成王占礼马天程
Owner CHANGCHUN UNIV OF TECH
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