A Parallel Driven 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 effect of thrust output, simplified driving, and simple overall structure
Active Publication Date: 2020-10-30
NANJING INST OF TECH
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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
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[0022] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0023] Such as Figure 1 to Figure 4 As 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, and the stator includes a stator seat 6, an elastic body 2. Piezoelectric ceramics 1 and elastic components, one end of the stator base 6 is connected to the support base 14, 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 en...
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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-driven single-phase linear ultrasonic motor. Background technique [0002] The ultrasonic motor uses the inverse piezoelectric effect of the piezoelectric material to excite the high-frequency vibration of the metal elastic body in the ultrasonic frequency range, and then converts the high-frequency vibration of the metal elastic body into the moving body through the contact friction transmission between the stator and the mover. macro rotation or linear motion. It belongs to a new type of micro motor, which has the advantages of low speed and high torque, fast dynamic response, good electromagnetic compatibility, and self-locking when power is off. [0003] The current ultrasonic motor has limited output torque or thrust, which limits its application. Especially for ultrasonic motors with single stator and single mover, the output torque or thrust is relative...
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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