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Rotary ultrasonic motor driven by multiple feet in bending vibration mode

A technology of bending vibration and ultrasonic motor, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problems of difficult processing, complex stator structure, large volume, etc. , to achieve the effect of small processing difficulty, small overall volume and simple driving control method

Pending Publication Date: 2020-04-07
XIAMEN CITY UNIV XIAMEN RADIO & TV UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current rotary ultrasonic motors generally have the problems of complex stator structure, large volume and difficult processing.

Method used

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  • Rotary ultrasonic motor driven by multiple feet in bending vibration mode
  • Rotary ultrasonic motor driven by multiple feet in bending vibration mode
  • Rotary ultrasonic motor driven by multiple feet in bending vibration mode

Examples

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Embodiment Construction

[0028] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific examples.

[0029] A rotary ultrasonic motor driven by multi-legs using flexural vibration modes, such as Figure 1-4 As shown, it includes a casing 10, a stator 20, a rotor 30 and a driving power supply. The stator 20 is installed inside the housing 10 , the rotor 20 passes through the stator in a rotatable manner, and the driving power is installed outside the housing 10 , and the driving power can output two independent driving signals.

[0030] Such as Figure 1-4 As shown, the stator 20 includes a polygonal elastic body 21 and a piezoelectric ceramic sheet 22. The polygonal elastic body 21 has a plurality of sides, and each side includes a corresponding outer edge and an inner edge. Each inner edge of the polygonal elastic body 21 The sides together form a hollow part, the above-mentioned rotor 30 passes through the...

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Abstract

The invention discloses a rotary ultrasonic motor driven by multiple feet in a bending vibration mode. The rotary ultrasonic motor comprises a shell, a stator installed in the shell, a rotor capable of penetrating through the stator in a rotating mode and a driving power source installed outside the shell. The stator comprises a hollow multi-frame-shaped elastic body and a plurality of piezoelectric ceramic pieces; two piezoelectric ceramic pieces are arranged on each outer edge of the multi-frame-shaped elastic body, and driving feet extend out of the inner edges of the multi-frame-shaped elastic body respectively; the two piezoelectric ceramic pieces located on the same outer edge are located on the two sides of the driving feet on the corresponding inner edges; each piezoelectric ceramic piece is divided into two groups, the two groups of piezoelectric ceramic pieces are electrically connected with the corresponding output ends of the driving power supply respectively, the two piezoelectric ceramic pieces on the same outer edge are located in different groups respectively, and the two adjacent piezoelectric ceramic pieces are also located in different groups respectively. Compared with the prior art, the structure is simple, the driving control mode is simple, and the output efficiency of the rotary ultrasonic motor is improved; meanwhile, the processing difficulty of each part is low.

Description

technical field [0001] The present invention relates to a rotary ultrasonic motor, more particularly to a rotary ultrasonic motor driven by multiple legs using a bending vibration mode. Background technique [0002] Ultrasonic motor is a new type of micro motor. Rotary ultrasonic motor is a type of ultrasonic motor. Its working principle is to use the inverse piezoelectric effect of piezoelectric elements to convert the input electrical energy into mechanical energy and excite the ultrasonic frequency of the stator vibrating body. Mechanical vibration (micron level), and directly drives the rotor to rotate through the frictional coupling between the stator and the rotor. [0003] Compared with traditional electromagnetic motors, ultrasonic motors have the advantages of fast response speed (millisecond level), high positioning accuracy, no electromagnetic interference, and self-locking when power is off. Wide application prospects. However, the current rotary ultrasonic mot...

Claims

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Application Information

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IPC IPC(8): H02N2/10H02N2/12H02N2/14
CPCH02N2/10H02N2/12H02N2/14
Inventor 陈建毅林星陵蒋丽省
Owner XIAMEN CITY UNIV XIAMEN RADIO & TV UNIV
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