Unlock instant, AI-driven research and patent intelligence for your innovation.

Ultrasonic motor having diagonally excitable actuator plate

An ultrasonic motor and actuator technology, applied in piezoelectric/electrostrictive or magnetostrictive motors, piezoelectric/electrostrictive/magnetostrictive devices, generators/motors, etc., can solve the problem of electrical excitation Problems such as increased voltage, uneven height, shortened motor life, etc.

Active Publication Date: 2019-02-05
PHYSIK INSTR PI
View PDF12 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in a 2-fold increase in the electric field voltage of the motor
In addition, known configurations are characterized by significant differences in the shape of the tracks of the friction elements, which in turn lead to increased wear as a result of their frictional contact and to a reduction in the service life of the motor
In addition, differences in the trajectory shape of the friction elements lead to a high degree of inhomogeneity in the movement of the elements to be driven at low movement speeds
All of these together reduce the application range of this motor

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
  • Ultrasonic motor having diagonally excitable actuator plate
  • Ultrasonic motor having diagonally excitable actuator plate
  • Ultrasonic motor having diagonally excitable actuator plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] figure 1 A possible embodiment of the ultrasonic motor according to the invention is shown. This ultrasonic motor includes an ultrasonic actuator 1 in the form of a rectangular piezoelectric plate 2 having two main surfaces in terms of area and four side surfaces connecting the two main surfaces to each other, wherein each spacer Two friction elements 3 are arranged on one side surface representing the end surface of the ultrasonic actuator so that each friction element can abut the end surface of the corresponding adjacent side surface of the ultrasonic actuator. The actuator 1 is held or mounted in the housing 4 by means of a support 5 . The friction element 3 is pressed against the friction layer 6 of the element 7 to be driven, which can be moved linearly or mounted movably by means of ball bearings 8 .

[0027] figure 2 shows in detail figure 1 The piezoelectric plate 2 of the actuator 1. The plate 2 has a length L, a width B and a thickness D. It has side f...

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 relates to an ultrasonic motor, comprising an ultrasonic actuator (1) in the form of a rectangular piezoelectric plate (2), which has two generators (23, 24) for acoustic standing wavesand on which at least two friction elements (3) are arranged, an element to be driven, and an electric excitation device. The piezoelectric plate of the actuator is divided into two pairs of sectionslying diagonally opposite by two virtual planes (S1, S2), which extend perpendicularly to each other and which extend through the center line of the main surfaces of the actuator, wherein each of thegenerators (23; 24) consists of two parts (25+26; 27+28), which can be operated in an antiphase manner and each of which is arranged in a diagonal section of the piezoelectric plate, and the frictionelements (3) are arranged on one or two end faces (10) of the piezoelectric plate (2).

Description

technical field [0001] The invention relates to an ultrasonic motor according to claim 1 . Background technique [0002] DE 10 2014 209 419 B3 discloses an ultrasonic motor, wherein the ultrasonic actuator is designed as a rectangular piezoelectric plate with a generator for the acoustic ramp and on it two Friction elements. The sound wave generator of this motor consists of two sections electrically connected in series. This results in a 2-fold increase in the electrical field voltage of the motor. In addition, the known configurations are characterized by significant differences in the track shapes of the friction elements, which in turn lead to increased wear as a result of their frictional contact and to a shortened service life of the electric machine. In addition, differences in the trajectory shape of the friction elements lead to high inhomogeneities in the movement of the elements to be driven at low movement speeds. All of these together reduce the application ...

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): H01L41/047H01L41/09H02N2/00H02N2/02
CPCH02N2/0025H02N2/0075H02N2/026H02N2/065
Inventor 弗拉迪米尔·维什涅夫斯基阿列克谢·维什涅夫斯基
Owner PHYSIK INSTR PI