Straight-line suppersonic motor based on vibration in rectangular piezoelectric ceramic thin plate

A technology of piezoelectric ceramics and ultrasonic motors, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve complex structure, large volume, electromechanical conversion efficiency and position low resolution issues

Inactive Publication Date: 2001-12-19
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional linear ultrasonic motor has a complex structure, large volume, low electromechanical conversion effici

Method used

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  • Straight-line suppersonic motor based on vibration in rectangular piezoelectric ceramic thin plate
  • Straight-line suppersonic motor based on vibration in rectangular piezoelectric ceramic thin plate
  • Straight-line suppersonic motor based on vibration in rectangular piezoelectric ceramic thin plate

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Embodiment Construction

[0007] according to figure 1 and figure 2 Describe the specific embodiment and working principle of the present invention.

[0008] The rectangular piezoelectric ceramic thin plate 4 is fixed by the rubber sleeve 11, so as to better excite the required working modes. The protrusion 5 glued on the top of the rectangular piezoelectric ceramic thin plate 4 constitutes a composite drive vibrator (stator), thereby improving the contact between the stator and the mover 9 . The bearing 8 installed at the contact point of the mover guiding mechanism is used to guide the mover. Pins 9 are installed at the contact of the moving track of the mover to reduce the contact area between the mover and the moving track, thereby reducing the sliding frictional resistance of the mover 6 . The preload spring sheet 12, the preload washer 13, the preload screw 15, and the preload nut 14 constitute a preload adjusting device, which controls the preload applied to the vibrator (stator) by changing...

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Abstract

The miniature linear supersonic motor consists of pedestal, back cover plate, upper cover plate, rectangular piezoelectric ceramic sheet, protuberant object, active cell, ball mat, rubber jacket, prestressed sheet spring, prestressed mat, prestressed screw and nut. The supersonic motor has simple structure, small volume, high mechnoelectrical conversion rate, and high position resolution. It outputs well controlled linear motion directly and it is suitable for driving and control for small and precise linear motion.

Description

technical field [0001] The invention relates to a miniature linear ultrasonic motor utilizing the inverse piezoelectric effect of piezoelectric ceramic materials and ultrasonic vibration in a rectangular piezoelectric ceramic plate. Background technique [0002] Rotary ultrasonic motors can only do rotary motion, not linear motion, and only generate thrust instead of torque. The traditional linear ultrasonic motor has a complex structure, large volume, low electromechanical conversion efficiency and position resolution, and is not suitable for driving and controlling small and precise linear motion devices. Contents of the invention [0003] In order to achieve simple structure, small size, high electromechanical conversion efficiency, high position resolution, direct output linear motion, and good controllability, the present invention consists of a linear ultrasonic motor: a rectangular piezoelectric ceramic thin plate is fixed on the base with a rubber sleeve Between t...

Claims

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Application Information

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IPC IPC(8): H02N2/02H02N2/04H02N2/08
Inventor 赵淳生刘剑
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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