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Torsional vibration sandwich-type beam-slab composite excitation ultrasonic motor, and drive platform and drive method thereof

A technology of beam-plate composite and ultrasonic motor, which is applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problem of small effective contact area, small vibration amplitude, Problems such as unsatisfactory output performance of the ultrasonic motor can achieve the effect of improving the output performance of the whole machine, large vibration amplitude, and large output power

Inactive Publication Date: 2016-01-20
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • 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 torsional vibration sandwich type beam-plate composite excitation ultrasonic motor, driving platform and driving method thereof

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  • Torsional vibration sandwich-type beam-slab composite excitation ultrasonic motor, and drive platform and drive method thereof
  • Torsional vibration sandwich-type beam-slab composite excitation ultrasonic motor, and drive platform and drive method thereof
  • Torsional vibration sandwich-type beam-slab composite excitation ultrasonic motor, and drive platform and drive method thereof

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specific Embodiment approach 1

[0037] Specific implementation mode one: combine Figure 1~Figure 11 , Figure 14~Figure 16 This embodiment will be described. This implementation mode provides a specific implementation scheme of a torsional vibration sandwich type beam-slab composite excitation ultrasonic motor. The torsional vibration sandwich beam-plate composite excitation 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, and a nut 8 and output shaft 9.

[0038] 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 Integer; the central position of the end surface on one side of the fixed base 1 is provided with a threaded hole 1-2 struc...

specific Embodiment approach 2

[0046] 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 torsional vibration sandwich beam-plate composite excitation ultrasonic motor. The driving platform using a torsional vibration sandwich type beam-plate composite excitation 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, and a thrust ball bearing 6 , Belleville spring 7, fastening connector 8 and hexagon socket bolt 9, the second elastic body 3 in the drive platform of the torsional vibration sandwich type beam-plate composite excitation ultrasonic motor and the second elastic body in the first specific embodiment The structural composition and connection mode of the two elastic bodies 3 are the same.

[0047] The fixed outer frame 1 is a thin-walled ring structure with...

specific Embodiment approach 3

[0054] Embodiment 3: This embodiment provides a specific embodiment of a torsional vibration sandwich type beam-plate composite excitation ultrasonic motor and a driving method of a driving platform using the motor.

[0055] The specific implementation of the torsional vibration sandwich type beam-plate composite excitation ultrasonic motor and the driving method of the driving platform using the motor is: the excitation group A is connected with an alternating current of a certain ultrasonic frequency (generally greater than 16kHz) The excitation electrical signal excites the first elastic body 2 where it is located to generate a torsional vibration mode; the excitation group B passes an AC excitation electrical signal of the same ultrasonic frequency (generally greater than 16kHz) to excite the second elastic body 3 where it is located A bending vibration mode is generated; the vibration excitation group A and the vibration excitation group B pass through the same amplitude o...

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Abstract

The invention discloses a torsional vibration sandwich-type beam-slab composite excitation 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 torsional vibration sandwich-type beam-slab composite excitation 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<15> excitation mode is adopted by an annular piezoelectric ceramic piece; an excitation electric signal in an ultrasonic frequency band is applied to the piezoelectric ceramic piece; the first elastomer and the second elastomer are excited to generate torsional and flexural vibration modes respectively; a drive traveling wave is generated to form drive friction force by superposing and coupling of the vibration modes; and movement outputs in positive and reverse two directions are achieved. The torsional vibration sandwich-type beam-slab composite excitation 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 torsional vibration sandwich beam-plate composite excitation ultrasonic motor, a driving platform and a driving method thereof, belonging 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 a...

Claims

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Application Information

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IPC IPC(8): H02N2/10H02N2/12
Inventor 程廷海王英廷赵宏伟张邦成王占礼林洁琼柳虹亮
Owner CHANGCHUN UNIV OF TECH