Minitype two-degree-of-freedom planar motion ultrasonic motor

A plane motion, ultrasonic motor technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problems of difficult motor control and structural asymmetry.

Inactive Publication Date: 2016-06-01
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

B 2X Modal with B 2Y The modes are isomorphic modes that are orthogonal to each other and have close resonant frequencies. Due to the possible structural asymmetry in the motor preparation process, B may be simu

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Minitype two-degree-of-freedom planar motion ultrasonic motor
  • Minitype two-degree-of-freedom planar motion ultrasonic motor
  • Minitype two-degree-of-freedom planar motion ultrasonic motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The present invention provides a two-degree-of-freedom piezoelectric ultrasonic motor. In order to make the purpose, technical solution and effect of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific implementations described here are only used to explain the present invention, not to limit the present invention.

[0028] Depend on figure 1 It can be seen that the shown two-degree-of-freedom planar motion ultrasonic motor 1 includes a stator 2 , a sliding block 3 , and an elastic preloading device 4 . Among them, the structure of stator 2 is as follows: figure 2 As shown, it is formed by bonding and assembling a multilayer piezoelectric ceramic column 21 of a specific size and a friction head 22 . The frictional contact between the friction head 22 and the sliding block 3 is realized by means of the elastic preloading device 4 , w...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a minitype two-degree-of-freedom planar motion ultrasonic motor. The motor comprises an elastic pre-compression apparatus, a piezoelectric ceramic stator and a sliding block connected in sequence, wherein the piezoelectric ceramic stator is a piezoelectric ceramic rod with a multi-layered structure; a friction head is adhered to the top end of the piezoelectric ceramic rod, and the sliding block is arranged on the friction head; the elastic pre-compression apparatus is arranged at the bottom of the piezoelectric ceramic stator for providing pre-compression force to realize frictional contact between the piezoelectric ceramic stator and the sliding block; the stator can generate a first-order longitudinal telescopic vibration mode L1 in a longitudinal Z direction, a second-order bending vibration mode B2X in a transverse X direction, and a fourth-order bending vibration mode B4Y in a transverse Y direction under voltage excitation; the executed composite mode enables the friction head at the end part to perform a micro-amplitude high-frequency elliptical motion within an XZ plane, or perform a 8-shaped micro-amplitude high-frequency motion within a YZ plane so as to drive the sliding block contacted with the friction head to move along the X direction or the Y direction or to perform a translation motion of any direction within an XY plane.

Description

technical field [0001] The invention relates to a two-degree-of-freedom piezoelectric ultrasonic motor, which belongs to the field of precision driving. Background technique [0002] In the field of micro-electromechanical systems, industries such as precision manufacturing have put forward higher requirements for precision drives. However, the traditional electromagnetic motor is limited by its working principle, the torque / mass ratio is not large enough, the energy efficiency drops significantly when the volume is reduced, and it cannot be self-locking when the power is turned off. Ultrasonic motors using the inverse piezoelectric effect and the friction principle thus show great advantages in the field of precision drives. [0003] Compared with traditional motors, ultrasonic motors have the following characteristics: simple structure, compact structure, large torque / mass ratio (3~10 times that of traditional motors); low-speed high-torque, no gear reduction mechanism, a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02N2/02
CPCH02N2/028
Inventor 郭明森陈加林赵淳生
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap