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A Standing Wave Linear Ultrasonic Motor

A linear ultrasonic motor and standing wave technology, which is applied to generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve the problems of standing wave linear ultrasonic motors that have not yet been seen

Inactive Publication Date: 2016-08-17
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of linear ultrasonic motor only uses a stator that provides two modal vibrations at the same time. At present, there is no report of a standing wave linear ultrasonic motor that uses a structural vibration mode for the stator and the mover.

Method used

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  • A Standing Wave Linear Ultrasonic Motor
  • A Standing Wave Linear Ultrasonic Motor
  • A Standing Wave Linear Ultrasonic Motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A standing wave type linear ultrasonic motor of the present embodiment is as figure 1 , 2As shown, including a stator and a mover, the stator and the mover are standing wave piezoelectric vibrators, the number of the stator is one, the number of the mover is one, and the driving foot of the stator is connected to the mover One of the driving surfaces of the stator interacts, the stator is fixed on the base, and the mover is fixed on the guide rail, and at the same time, the stator and mover interact to drive the mover to move; the stator is controlled by the first The piezoelectric ceramic sheet is composed of a first metal elastic body, the first metal elastic body includes a driving foot, a first continuously variable cross section part, and a first constant cross section part, and the driving foot is located between two first continuously variable cross section parts, The first constant cross-section part is set outside the first continuously variable cross-section ...

Embodiment 2

[0023] The difference between this embodiment and embodiment 1 is: as image 3 As shown, the number of the mover is one, the number of the stator is two, the driving foot of one of the stators interacts with one driving surface of the mover, and the other driving surface interacts with the other The driving feet of one stator interact, and at the same time, there are two first piezoelectric ceramic sheets on the same side of any one stator, and an electrode sheet is arranged between the two first piezoelectric ceramic sheets on the same side, and The outer sides of the two first piezoelectric ceramic sheets on the same side are respectively provided with a front counterweight and a rear counterweight, and the stator is also provided with pre-tightening bolts; a sinusoidal electric field is applied to the first piezoelectric ceramic sheet to excite its action. In the second-order longitudinal vibration, a tangential alternating force is generated at the contact between the driv...

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Abstract

The invention relates to a standing wave linear ultrasonic motor and belongs to the technical field of ultrasonic motors. The standing wave linear ultrasonic motor comprises a stator and a rotor. The stator and the rotor are both standing wave piezoelectric vibrators, the stator is fixed on a base, the rotor is fixed on a guide rail, and simultaneously the stator and the rotor interact with each other to drive the rotor to move. The standing wave linear ultrasonic motor is simple in structure, large in output force and high in output efficiency.

Description

technical field [0001] The invention discloses a standing wave linear ultrasonic motor, which belongs 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\thrust, fast response (millisecond level), self-locking when power off, high control precision, no electromagnetic interference and low noise operation. It is used in aerospace, robots, Micro-machines, precision instruments, medical equipment, servo mechanisms and other fields have broad application prospects. [0003] Linear ultrasonic motors belong to a category of ultrasonic motors. For a linear ultrasonic motor capable of moving in two directions, it generally includes a mover and a stator. Its structural features are: the mover is a linear g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/02H02N2/04
Inventor 姚志远周胜利
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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