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Ultrasonic suspension gyroscope based on planar holographic transducer

A transducer and gyroscope technology, which is applied in directions such as rotating gyroscopes, can solve the problems of difficult miniaturization, difficult wide application, and complex structure, and achieve the effects of improving gyro precision, low cost, and avoiding interfering torque.

Active Publication Date: 2021-07-02
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing ultrasonic gyroscopes rely on many piezoelectric ceramic arrays, which have the disadvantages of complex structure, poor reliability, and difficulty in miniaturization, making it difficult to obtain wide application.

Method used

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  • Ultrasonic suspension gyroscope based on planar holographic transducer
  • Ultrasonic suspension gyroscope based on planar holographic transducer
  • Ultrasonic suspension gyroscope based on planar holographic transducer

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0038] Such as figure 1 with figure 2 As shown, an ultrasonic suspension gyroscope based on a planar holographic transducer includes a photoelectric detection device 1, which is vertically installed in the mounting hole of the magnetic field adding and rotating system 2, and the axis of the photoelectric detection device 1 is directly facing the spherical shape The spherical center of the hollow rotor 3 obtains an angle signal by aiming at the engraved line on the spherical hollow rotor 3 with the help of the photoelectric detection device 1. The photoelectric sensing technology is used to detect non-electrical quantities, and has the advantages of simple structure, non-contact, high reliability, The characteristics of high precision and fast response can meet the technical requirements of the ultrasonic gyroscope angle measurement system; t...

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Abstract

An ultrasonic suspension gyroscope based on a planar holographic transducer comprises a photoelectric detection device; the photoelectric detection device is vertically mounted in a mounting hole of a magnetic field rotation system; the axis of the photoelectric detection device right faces the sphere center of a spherical hollow rotor; angle signals are obtained by aiming at scribed lines on the spherical hollow rotor through the photoelectric detection device; and the magnetic field rotation system is installed on a cylindrical stator; the spherical hollow rotor floats in liquid in the cylindrical stator, the cylindrical stator is fixedly installed on the upper surface of a sound matching layer, a plane holographic transducer is bonded to the lower surface of the sound matching layer, and a base is installed on the lower surface of the plane holographic transducer. A vortex sound field formed by the plane holographic transducer drives the spherical hollow rotor to rotate at a high speed to achieve the gyroscope effect, the precision of the gyroscope can be greatly improved. The gyroscope has the advantages of being simple in structure, high in stability, easy to integrate and low in cost.

Description

technical field [0001] The invention relates to the technical field of ultrasonic suspension gyroscopes, in particular to an ultrasonic suspension gyroscope based on a planar holographic transducer. Background technique [0002] Ultrasonic suspension gyroscope is a mechanical rotor gyroscope formed by applying ultrasonic suspension and driving technology to the field of inertial instruments. Its basic principle is as follows: use ultrasonic suspension support technology to suspend the spherical rotor, and then use ultrasonic driving technology to High-speed rotation produces a gyro effect, and finally uses the signal reading device to detect angular motion and realize navigation and positioning functions; the suspension force comes from the acoustic radiation pressure generated by ultrasonic vibration, and the driving force comes from the acoustic viscous force and the acoustic radiation pressure in the direction of rotation weight. [0003] At present, most ultrasonic gyro...

Claims

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Application Information

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IPC IPC(8): G01C19/02G01C19/06
CPCG01C19/02G01C19/06
Inventor 曾亮史晓斌罗志王森梁
Owner XI AN JIAOTONG UNIV
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