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A Multistage Parallel Dual Output Shaft Rotating Ultrasonic Motor

An ultrasonic motor, dual output shaft technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problem of small radial size, small output torque, lever arm short and so on

Active Publication Date: 2021-09-10
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent [CN201210433818.3] proposes a rotating ultrasonic motor driven by multiple parallel V vibrators, but the disadvantage is that the V vibrator contacts act on the mover (that is, the output shaft), and the radial dimension of the shaft It must be very small, which causes the problem of short arm and small output torque

Method used

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  • A Multistage Parallel Dual Output Shaft Rotating Ultrasonic Motor
  • A Multistage Parallel Dual Output Shaft Rotating Ultrasonic Motor
  • A Multistage Parallel Dual Output Shaft Rotating Ultrasonic Motor

Examples

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Effect test

Embodiment 1

[0032] In this embodiment, the N V vibrators can generate driving force simultaneously or not at the same time (four V vibrators in the schematic diagram of the present invention). When the number of V vibrators is an even number, the V vibrators are numbered clockwise or counterclockwise. In the schematic diagram, they are numbered counterclockwise, such as image 3As shown, the two sandwich transducers of each V vibrator are divided into two phases, A and B. As shown in the figure, in this embodiment, the vibrators (711) and (713) are connected to phases A and B with a phase difference of 90°. Simple harmonic excitation signal, (712), (714) oscillator A phase access and (711), (713) oscillator A phase difference of 180 ° simple harmonic excitation signal, (712), (714) The phase B of the vibrator is connected to the simple harmonic excitation signal with a phase difference of 180° from the phase B of the vibrator (711) and (713). It can ensure that the contact of the V vibra...

Embodiment 2

[0034] In this embodiment, the four V oscillators generate driving force at the same time, and the excitation signal of each V oscillator is completely the same, that is, the same frequency and the same phase. If the phase difference of the two-phase excitation signals of V vibrator A and B is adjusted to -90°, the reverse rotation of the motor can be realized. Such as image 3 The four V oscillators of the rotor shown in the figure, (711), (712), (713), (714) oscillators A and B are connected to simple harmonic excitation signals with a phase difference of 90°, and the radial force of the rotor is balanced.

Embodiment 3

[0036] In this embodiment, the size of the included angle of the transducer is changed. By changing the angle between the two sandwich transducers of the V vibrator, the contact of the V vibrator can be controlled to form an elliptical motion. When the included angle is less than 90°, the ellipse formed by the V vibrator contact is prolate, such as Figure 8 As shown in (a), (82) is the movement track of the contact, which is oblong and elliptical, and the normal direction of the contact between the contact and the friction layer has a large amplitude, so when the contact and the friction layer rub against each other, a large friction force can be generated , so that the output torque of the motor is large.

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Abstract

The invention discloses a multistage parallel double output shaft rotating ultrasonic motor, which comprises: a base (61), which is used for installing a V vibrator, a pre-pressure mechanism and an output shaft; a V vibrator (71); a pre-pressure bolt (111); Nut (51); Pressure nail (91) contacting and pressing with pre-pressure bolt; Spring (101); Shaft (11); Bearing (31); End cover (21); Housing (41); There is a friction material layer in the casing, which is the friction layer (81). After the motor is excited by the hand of the V vibrator, the contact makes an elliptical motion and rubs against the friction layer to generate a driving force. The principle and structure of the invention are simple, and the rotating electrical machine has the characteristics of large output torque, good running stability and the like.

Description

technical field [0001] The invention relates to an ultrasonic motor, in particular to a rotating ultrasonic motor designed by connecting V vibrators in parallel, and belongs to the field of ultrasonic motors. Background technique [0002] Compared with traditional electromagnetic motors, ultrasonic motors do not rely on electromagnetic media to transfer energy, but use the inverse piezoelectric effect of piezoelectric ceramics to convert and couple various stretching vibration modes to amplify the microscopic deformation of materials through resonance and friction. The coupling is converted into the macroscopic motion of the vibrator or the slider, and the motor is not easily disturbed by the electromagnetic field when it is working. At present, most rotary ultrasonic motors have the defect that the output torque is not large. The V-shaped linear ultrasonic motor designed based on the Langevin vibrator has the advantage of large thrust. If the V vibrator is used as the rotor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/12
CPCH02N2/12
Inventor 张彦虎袁项辉周玉华全力
Owner JIANGSU UNIV
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