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Longitrorse complex excitation ultrasonic motor, driving platform and driving method thereof

A technology of composite excitation 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 vibration amplitude and poor output performance of ultrasonic motor Ideal, small effective contact area and other issues, to achieve the effect of large vibration amplitude, improved output performance of the whole machine, large application and development prospects

Inactive Publication Date: 2016-02-03
CHANGCHUN UNIV OF TECH
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  • Claims
  • Application Information

AI Technical Summary

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 longitudinal-torsion composite excitation ultrasonic motor, a driving platform and a driving method thereof

Method used

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  • Longitrorse complex excitation ultrasonic motor, driving platform and driving method thereof
  • Longitrorse complex excitation ultrasonic motor, driving platform and driving method thereof
  • Longitrorse complex excitation ultrasonic motor, driving platform and driving 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 vertical-torsion composite excitation ultrasonic motor. The longitudinal-torsion 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, a nut 8 and an output shaft 9 composition.

[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 structure, which is used for the externa...

specific Embodiment approach 2

[0044] 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 longitudinal-torsion compound vibration excitation ultrasonic motor. The drive platform using the longitudinal-torsion 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, a thrust ball bearing 6, and a disc spring 7. The fastening connector 8 and the inner hexagonal bolt 9 are composed of the second elastic body 3 in the driving platform using the longitudinal-torsion composite excitation ultrasonic motor and the structural composition of the second elastic body 3 in the first specific embodiment. The connection is the same.

[0045] 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 e...

specific Embodiment approach 3

[0050] Embodiment 3: This embodiment provides a specific embodiment of a vertical-torsion compound vibration excitation ultrasonic motor and a driving method of a driving platform using the motor.

[0051] The specific implementation of the longitudinal-twisting compound vibration excitation ultrasonic motor and the driving method of the driving platform using the motor is as follows: the excitation group A passes an AC excitation electrical signal of a certain ultrasonic frequency (generally greater than 16kHz), Excite 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), and the excited longitudinal vibration excites the second elastic body 3 to generate bending vibration mode; the excitation group A and the excitation group B pass the same amplitude of the AC excitation electric signal, and the driving phase differen...

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Abstract

The invention discloses a longitrorse complex excitation ultrasonic motor, a driving platform and a driving method thereof, so as to solve the technical problem that the overall output performance of the ultrasonic motor is unsatisfactory as a girder structure elastomer or a disk structure elastomer is singly adopted. The longitrorse complex excitation ultrasonic motor comprises a fixing base, a first elastomer, a second elastomer, a rotation body, a key, a thrust ball bearing, a disk spring, and an output shaft, wherein the first elastomer has a girder structure; the second girder structure has a plate structure; and a piezoelectric patch adopts d31 and d15 excitation modes. Excitation electric signals in an ultrasonic frequency band are applied to the piezoelectric patch, a driving travelling wave is generated to form driving friction, and motion output in a forward direction and in a backward direction is realized. The longitrorse complex excitation ultrasonic motor has the technical advantages of large output power, stable motor operation, wide application range and the like, and has wide application prospects in technical fields of precise driving and micro positioning.

Description

technical field [0001] The invention relates to a longitudinal-torsion composite excitation 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-structur...

Claims

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Application Information

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IPC IPC(8): H02N2/10H02N2/12
Inventor 程廷海姜大伟王良张邦成王占礼林洁琼殷梦飞
Owner CHANGCHUN UNIV OF TECH
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