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Parallel-drive single-phase linear ultrasonic motor

An ultrasonic motor and driving technology, which is applied in the direction of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve the problem of low thrust of linear ultrasonic motors and achieve increased The output thrust, the overall structure is simple, and the effect of the direction of motion is realized

Active Publication Date: 2019-04-30
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the deficiencies in the prior art, the present invention provides a parallel-driven single-phase linear ultrasonic motor, which solves the technical problem of the low thrust of the linear ultrasonic motor in the prior art

Method used

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  • Parallel-drive single-phase linear ultrasonic motor
  • Parallel-drive single-phase linear ultrasonic motor
  • Parallel-drive single-phase linear ultrasonic motor

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the drawings. The following embodiments are only used to explain the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

[0023] Such as Figure 1 to Figure 4 Shown: This embodiment discloses a parallel-driven single-phase linear ultrasonic motor: including a stator, a support base 14, a mover 7, and a mover support device for supporting the mover 7. The stator includes a stator base 6, an elastic body 2. Piezoelectric ceramic 1 and elastic components. One end of the stator base 6 is connected to the support base 14, and the other end is connected to one end of the elastic body 2 through the elastic component. The other end of the elastic body 2 is connected to the mover 7, and the elastic body 2 is provided for Connect the hollow part of the piezoelectric ceramic 1, the elastic component is used to make the end of th...

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Abstract

The invention discloses a parallel-drive single-phase linear ultrasonic motor which comprises stators, a support base, a mover and a mover supporting device for supporting the mover. Each of the stators comprises a stator seat, an elastic body, a piezoelectric ceramic and an elastic component. One end of the stator seat is connected to the support base, the other end is connected to one end of theelastic body through the elastic component, the other end of the elastic body is connected to the mover, the elastic body is provided with a hollow portion for connecting the piezoelectric ceramic, the elastic component is used for allowing an end part of the elastic body to press the mover, and the multiple stators are circumferentially and evenly distributed on the support base with the axis ofthe mover as a center. After the piezoelectric ceramic of the present invention is energized, the high-frequency vibration of the piezoelectric ceramic and the elastic body is excited, and the high-frequency vibration of the elastic body is converted into linear motion of the mover by friction. The output thrust is increased by driving the same mover with a plurality of stators in parallel, onlysingle-phase alternating current for power supply is needed, and the change of the moving direction of the motor can be realized by changing the frequency of a power supply.

Description

Technical field [0001] The invention relates to the field of linear ultrasonic motors, in particular to a parallel drive type single-phase linear ultrasonic motor. Background technique [0002] The ultrasonic motor uses the inverse piezoelectric effect of piezoelectric materials to excite the high-frequency vibration of the metal elastic body in the ultrasonic frequency band, and then through the contact friction transmission between the stator and the mover, the high-frequency vibration of the metal elastic body is converted into the mover The macroscopic rotation or linear movement. It is a new type of micro-special motor, which has the advantages of low speed and high torque, fast dynamic response, good electromagnetic compatibility, and self-locking after power failure. [0003] The current ultrasonic motor has limited output torque or thrust, which limits its application. Especially the ultrasonic motor adopting single stator and single mover, the output torque or thrust is ...

Claims

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Application Information

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IPC IPC(8): H02N2/02H02N2/04
CPCH02N2/02H02N2/04
Inventor 蒋春容夏凯张津杨陆旦宏
Owner NANJING INST OF TECH
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