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Coaxial reverse rotation standing wave type double-sided staggered tooth ultrasonic motor stator

A reverse-rotating, ultrasonic motor technology, applied in piezoelectric/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., which can solve the problems of high overall stiffness and limited increase in oscillator amplitude. , to achieve the effect of flexible design, stable performance and simple structure

Pending Publication Date: 2020-01-24
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the high overall stiffness of the stator of the ultrasonic motor leads to the limitation of the vibration amplitude of the vibrator, a standing wave double-sided staggered tooth ultrasonic motor stator with coaxial reverse rotation is provided.

Method used

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  • Coaxial reverse rotation standing wave type double-sided staggered tooth ultrasonic motor stator
  • Coaxial reverse rotation standing wave type double-sided staggered tooth ultrasonic motor stator
  • Coaxial reverse rotation standing wave type double-sided staggered tooth ultrasonic motor stator

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specific Embodiment approach 1

[0015] Specific implementation mode one: combine Figure 1 to Figure 3 Describe this embodiment, the coaxial counter-rotating standing wave double-sided interlaced teeth ultrasonic motor stator described in this embodiment includes a piezoelectric ceramic sheet (1) and a double-sided interlaced tooth metal body (2); its features Because the double-sided staggered tooth-shaped metal body (2) is a ring structure as a whole, the driving teeth are staggered on the upper and lower sides of the ring metal body in a certain position along the circumferential direction, and the piezoelectric ceramic sheet (1) is polarized along the thickness direction, and along the circumference The array is pasted on the upper and lower sides of the ring-shaped metal body. The polarization directions of two adjacent piezoelectric ceramic sheets (1) on the same side of the ring-shaped metal body are opposite, and the polarization directions of two adjacent piezoelectric ceramic sheets (1) on different...

specific Embodiment approach 2

[0016] Embodiment 2: The difference between this embodiment and the coaxial counter-rotating standing wave double-sided staggered teeth ultrasonic motor stator described in Embodiment 1 is that the driving teeth on one side of the stator are located on the left side of the piezoelectric ceramic sheet. (or right) side, the driving tooth on the other side is located on the right (or left) side of the piezoelectric ceramic sheet, only one piece of piezoelectric ceramic sheet (1) is pasted between the two driving teeth on the same side, and the corresponding The distance between the centerlines of two adjacent piezoelectric ceramic sheets (1) is 1 / 2 of a standing wave wavelength, wherein each piezoelectric ceramic sheet (1) should be less than or equal to 1 / 4 of a standing wave wavelength; The distance between the centerline of the tooth and the centerline of the adjacent left (or right) piezoelectric ceramic sheet (1) is one-eighth of a standing wave wavelength.

specific Embodiment approach 3

[0017] Embodiment 3: The difference between this embodiment and the coaxial counter-rotating standing wave double-sided staggered teeth ultrasonic motor stator described in Embodiment 1 is that by applying a single-phase AC voltage, the metal body is the common ground electrode, and the d of piezoelectric ceramics is used 31 The working mode realizes the bending vibration standing wave excitation of the stator.

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Abstract

The invention discloses a coaxial reverse rotation standing wave type double-sided staggered tooth ultrasonic motor stator, and relates to the technical field of piezoelectric ultrasonic motors. The problem that the overall rigidity of an existing surface-mounted ultrasonic motor stator is too high and the amplitude increase of a vibrator is limited is solved. The stator comprises piezoelectric ceramic pieces and a double-sided staggered tooth-shaped metal body, and the piezoelectric ceramic pieces are adhered to the upper and lower surfaces of the double-sided staggered tooth-shaped metal body according to certain positions. The stator can be applied to the field of ultrasonic motor manufacturing.

Description

technical field [0001] The invention relates to a coaxial and counter-rotating standing wave double-sided interlaced teeth ultrasonic motor stator, which belongs to the technical field of piezoelectric ultrasonic motors. Background technique [0002] Piezoelectric ultrasonic motor is a kind of piezoelectric ultrasonic motor that uses the inverse piezoelectric effect of piezoelectric ceramics to excite vibration in the ultrasonic frequency range in the elastic body, and forms a particle motion with a specific trajectory at a specific point or area on the surface of the elastic body, and then passes through the stator, The frictional coupling between the rotors converts the microscopic motion of the particle into the macroscopic motion of the rotor. It has the advantages of low speed and high torque, no need for a transmission mechanism, no electromagnetic interference, fast response, and self-locking when power is off. As a piezoelectric driver, it has Very wide range of appl...

Claims

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Application Information

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IPC IPC(8): H02N2/12
CPCH02N2/12
Inventor 杨小辉张东东贾爽宋汝军杨先海
Owner SHANDONG UNIV OF TECH