Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Alternating force based linear ultrasonic motor

A linear ultrasonic motor, alternating force technology, applied in the direction of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve the tangential alternating force linear ultrasonic motor that has not yet been seen and other problems, to achieve the effect of simple structure, high efficiency and high speed

Inactive Publication Date: 2012-09-26
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no reports of linear ultrasonic motors that use a structural vibration to provide tangential alternating force and directly use longitudinal vibration piezoelectric ceramics to provide normal alternating force

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
  • Alternating force based linear ultrasonic motor
  • Alternating force based linear ultrasonic motor
  • Alternating force based linear ultrasonic motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] A linear ultrasonic motor based on alternating force such as figure 1 As shown, it includes a stator and a mover. It is characterized in that: the stator is mainly composed of two left and right Langevin vibrators butted along the center line, and each Langevin vibrator is composed of a front cover 3, a rear end cover 2, a piezoelectric The ceramic sheet 6 and the corresponding electrode sheet 5 are composed of a continuous cross-section rod structure whose section is tapered from the tail to the head as a whole. A piece of piezoelectric ceramic sheet 4 for the driving foot is pasted on the surface parallel to the longitudinal vibration surface of the vibrator at the joint of the vibrator, and an electrode sheet 5 and a piece of friction sheet 8 are pasted on the piezoelectric ceramic sheet 4 for the driving foot to form the driving foot. The mover is A linear guide rail 1 is arranged in a parallel structure with the above-mentioned stator and contacts each other at the...

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 an alternating force based linear ultrasonic motor which comprises a stator and a rotor, wherein the stator comprises a left Langevin vibrator and a right Langevin vibrator which are in butt joint along a central line, each Langevin vibrator is entirely of a continuous section rod type structure, the section of which is tapered from the tail part to the head part, the headparts of the left Langevin vibrator and the right Langevin vibrator are in butt joint to obtain a whole body, clamping members are arranged at the lower parts of the Langevin vibrators and installed among a group of piezoelectric ceramic wafers, two ends of the stator are respectively provided with a preload bolt, a driving foot piezoelectric ceramic wafer is attached to on a surface arranged at the butt joint position of the two Langevin vibrators and parallel to the vertical vibrating face of the vibrator, an electrode plate and a friction plate are attached to the driving foot piezoelectric ceramic wafer to form a driving foot, the rotor is a linear guide rail and parallel to the stator, and the rotor and the stator come into contact at the driving foot. The invention facilitates the improvement of the speed, the output force and the operating efficiency of a motor. The alternating force based linear ultrasonic motor has simple structure, small size, large output force, high speed and high efficiency.

Description

technical field [0001] The invention relates to a linear ultrasonic motor based on alternating force and its working mode and electric excitation mode, belonging to the technical field of ultrasonic motors. Background technique [0002] Ultrasonic motor is a new type of power output device that utilizes the inverse piezoelectric effect of piezoelectric ceramics and ultrasonic vibration. Compared with electromagnetic motors, it has the advantages of compact structure, low-speed high-torque, fast response (milliseconds), power-off self-locking, good position and speed control, no electromagnetic interference, and low-noise operation. It is used in aerospace, micro Machinery, robots, precision instruments, servo mechanisms, medical devices and other fields have broad application prospects. [0003] Linear ultrasonic motors belong to a category of ultrasonic motors. According to the structure of the stator of the linear ultrasonic motor is a plate and a rod (or a combined stru...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/02H02N2/04H02N2/06
Inventor 姚志远沙金周胜利赵雷
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com