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High-power precision piezoelectric ultrasonic driving platform and driving method thereof

A piezoelectric ultrasonic, driving platform technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problem of small effective contact area, small vibration amplitude, The output performance of the ultrasonic motor is not ideal, and the output performance of the whole machine is improved, the positioning accuracy is high, and the output power is large.

Inactive Publication Date: 2015-12-30
CHANGCHUN UNIV OF TECH
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  • Abstract
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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 caused by the small effective contact area between the motor stator and the rotor or the small vibration amplitude of the positioning platform using the beam structure elastic body or the plate structure elastic body ultrasonic motor alone, The invention discloses a high-power precision piezoelectric ultrasonic driving platform and its driving method

Method used

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  • High-power precision piezoelectric ultrasonic driving platform and driving method thereof
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  • High-power precision piezoelectric ultrasonic driving platform and driving method thereof

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specific Embodiment approach 1

[0037] Specific implementation mode one: combine Figure 1~Figure 3 , Figure 6~Figure 11 This embodiment will be described. This implementation mode provides a specific implementation scheme of a high-power precision piezoelectric ultrasonic driving platform and its driving method for composite excitation of patch type beams and plates. The high-power precision piezoelectric ultrasonic driving platform of the patch type beam-plate composite excitation 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 are formed.

[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 are used to realize the fixed The fixed installatio...

specific Embodiment approach 2

[0045] Specific implementation mode two: combination Figure 12 , Figure 13 and Figure 26 This embodiment will be described. This implementation mode provides a specific implementation scheme of a high-power precision piezoelectric ultrasonic drive platform and its drive method for composite excitation of a longitudinal vibration sandwich beam and plate. The structural composition and connection method of the high-power precision piezoelectric ultrasonic drive platform with longitudinal vibration sandwich beam-plate composite excitation are the same as those in Embodiment 1, except that the specific structural composition and driving method of the first elastic body 2 are different.

[0046] The first elastic body 2 is composed of a front matching end 2-1, an energized electrode sheet 2-2, an annular piezoelectric ceramic sheet 2-3, a rear matching end 2-4 and an insulating sleeve 2-5; the front matching The end 2-1 is a stepped shaft structure, and the end of the front m...

specific Embodiment approach 3

[0049] Specific implementation mode three: combination Figure 13 , Figure 14 and Figure 27 This embodiment will be described. This implementation mode provides a specific implementation scheme of a high-power precision piezoelectric ultrasonic drive platform and its drive method for torsional vibration sandwich beam-plate composite excitation. The structural composition and connection method of the high-power precision piezoelectric ultrasonic drive platform with torsional vibration sandwich beam-plate composite excitation are the same as those in Embodiment 1, except that the specific structural composition and driving method of the first elastic body 2 are different.

[0050] The first elastic body 2 is composed of a front matching end 2-1, an energized electrode sheet 2-2, an annular piezoelectric ceramic sheet 2-3, a rear matching end 2-4 and an insulating sleeve 2-5; the front matching The end 2-1 is a stepped shaft structure, and the end of the front matching end 2...

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Abstract

The invention discloses a high-power precision piezoelectric ultrasonic driving platform and a driving method thereof so as to solve the technical problems of unsatisfactory overall output performance and the like caused by independently adopting a beam-structure elastomer ultrasonic motor or a plate-structure elastomer ultrasonic motor to act as a positioning platform of a driver. The high-power precision piezoelectric ultrasonic driving platform comprises a fixed outer frame, a first elastomer, a second elastomer, a rotating platform, a rolling body, a thrust ball bearing, a butterfly spring, a fastening connector and an internal hexagonal bolt, wherein the first elastomer is of a beam structure, and the second elastomer is of a plate structure. According to the invention, ultrasonic frequency internal excitation electric signals are applied to a piezoelectric element, the first elastomer and the second elastomer are excited to generate a micro-amplitude high-frequency vibration mode, and driving friction is generated at a contact surface of the second elastomer and the rotating platform by using superposition coupling of the vibration modes, thereby realizing rotational displacement motion output. The high-power precision piezoelectric ultrasonic driving platform has the technical advantages of high output power, good running stability, wide application range and the like, and has wide application prospects in the technical fields of precision driving and micro positioning.

Description

technical field [0001] The invention relates to a high-power precision piezoelectric ultrasonic driving platform and a driving method thereof, belonging to the technical field of precision driving and micro-positioning. Background technique [0002] Piezoelectric ultrasonic drive technology is widely used in precision drive platforms due to its unique technical advantages such as high positioning accuracy, no electromagnetic interference, and simple and compact structure. Among them, 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 friction 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 electr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/12H02N2/14
Inventor 程廷海王良刘小勇王英廷李绍松何丽鹏
Owner CHANGCHUN UNIV OF TECH
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