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Ultrasonic motor with two linear degrees of freedom based on flexural oscillation driving of rectangular plate

A technology of ultrasonic motor and rectangular plate, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., to achieve large thrust, reduce motor size, and simplify the structure of the motor

Inactive Publication Date: 2009-11-18
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there are no other ultrasonic motors with similar principles and structures to the present invention at home and abroad

Method used

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  • Ultrasonic motor with two linear degrees of freedom based on flexural oscillation driving of rectangular plate
  • Ultrasonic motor with two linear degrees of freedom based on flexural oscillation driving of rectangular plate
  • Ultrasonic motor with two linear degrees of freedom based on flexural oscillation driving of rectangular plate

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Embodiment Construction

[0017] Such as figure 1 As shown, the present invention is realized in this way, and it includes a stator assembly 1, a mover assembly 2, a bearing assembly 3 and a preloading and pressing assembly 4, which is characterized in that the preloading and pressing assembly 4 is connected to the bearing assembly 3, and the supporting assembly The seat assembly 3 is connected with the stator assembly 1, and the stator assembly 1 is connected with the movable subassembly 2;

[0018] Such as figure 2 As shown, the stator assembly is composed of a rectangular plate 5, a piezoelectric ceramic 6, an X-direction driving tooth 7, and a Y-direction driving tooth 8. It is characterized in that the front and back sides of the rectangular plate 5 are respectively connected with two layers of piezoelectric ceramics. 6. Four X-direction drive teeth 7 and four Y-direction drive teeth 8 are symmetrically connected to the piezoelectric ceramic 6, and the top surfaces of the X-direction drive teeth...

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Abstract

An ultrasonic motor with two linear degrees of freedom based on flexural oscillation driving of a rectangular plate is characterized in that a stator component is connected with a support component and is matched with a rotor component by a driving tooth; the rotor component and the support component form a high pair connection; the mainbody of the stator is a rectangular plate; the driving tooth is arranged on the plate; and the motor adopts the B and B in the X direction and the B and B in Y direction of the rectangular plate as a working mode, and activates the modes to drive the particles on the driving tooth to carry out elliptic motion respectively along the X direction and Y direction. The linear ultrasonic motor with two linear degrees of freedom has the technical effects of: 1. utilizing single slab stator to realize the direct driving of two linear DOF simultaneously, avoiding the motion transmission error of the traditional XY movement device and leading the motor to have quick and precise positioning; 2. adopting a sheet-type stator to facilitate the thinning and lightening of the motor; and 3. flexible motion, double functions, large thrust and more stable performance.

Description

technical field [0001] The invention relates to a two-linear degree-of-freedom ultrasonic motor driven by multiple bending vibration modes of a rectangular plate, in particular to a two-linear degree-of-freedom ultrasonic motor driven by bending vibration of a rectangular plate. Background technique [0002] Ultrasonic motors are divided into two categories: single-degree-of-freedom and multi-degree-of-freedom (including two). So far, single-degree-of-freedom ultrasonic motor technology has made great progress, some of which have been mass-produced and successfully applied. But in some occasions, such as precision XY table drive, omni-directional bionic robot joint drive and other applications, people need to provide two or more degrees of freedom motion and power. At this time, single-degree-of-freedom motors are powerless. In this context, in the late 1990s, multi-degree-of-freedom ultrasonic motors came into being and gradually entered the sight of ultrasonic researchers...

Claims

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Application Information

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IPC IPC(8): H02N2/02
Inventor 贺红林龙玉繁周翔
Owner NANCHANG HANGKONG UNIVERSITY
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