Method and device for applying exciting force in spatial direction

A technology of spatial direction and application device, applied in the field of excitation force application, measurement error calibration of test instruments, and vibration testing, which can solve the problem that the excitation force direction cannot be changed in space, the output displacement cannot be freely adjusted, and the structure of the exciter Stability and other issues, to achieve the effect of novel structure, high positioning accuracy and stable structure

Inactive Publication Date: 2017-08-11
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method and device for applying an exciting force in a spatial direction to solve the problems existing in current exciters such as unstable structure, low exciting frequency, inability to freely adjust output displacement, and inability to change the direction of exciting force in space

Method used

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  • Method and device for applying exciting force in spatial direction
  • Method and device for applying exciting force in spatial direction
  • Method and device for applying exciting force in spatial direction

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Embodiment Construction

[0042] A method for applying an exciting force in a spatial direction, comprising the following steps:

[0043] (1) Move the vertical (Y direction) moving body to an appropriate height along the two vertical guide rails, and fix the position with set screws;

[0044] (2) Move the horizontal (X direction) moving and rotating block to an appropriate position along the cylindrical part of the vertical moving body;

[0045] (3) Rotate the horizontally moving and rotating block around the cylindrical part of the vertical moving body at a certain angle, and fix the position with a set screw, so that the angle between the axis of the pressure sensor and the horizontal direction is α;

[0046] (4) Rotate the piezoelectric stack bracket around the fixed disc by a certain angle β, and fix the position with a set screw;

[0047] (5) Move the clamping mechanism of the pressure sensor to an appropriate position along the long arm of the lever amplification mechanism, and fix the position ...

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Abstract

The invention relates to a method and a device for applying an exciting force in a space direction, and belongs to the field of vibration testing, applying an exciting force and testing instruments. Move the vertical moving body and the horizontal moving and rotating block to an appropriate position, rotate the horizontal moving and rotating block at a certain angle, so that the angle between the axis of the pressure sensor and the horizontal direction is α, and then rotate the piezoelectric stack bracket by a certain amount. The angle β of , get the exciting force in X, Y, Z direction. The layout of the device is gantry type, the vertical moving body can move up and down along the vertical guide rail, the horizontal movement and the rotating block can rotate and move horizontally, the piezoelectric stack bracket can realize the rotation around the disc, and the piezoelectric stack is connected to the hinge by pushing The micro-motion platform realizes the output of displacement and force, and the displacement of the pressure sensor can be amplified by the long arm of the lever amplification mechanism. The advantages are stable structure, high excitation frequency, simple operation, adjustable output displacement, piezoelectric stacks of different lengths and specifications can be installed, and the object can be excited in all directions in space.

Description

technical field [0001] The invention belongs to the fields of vibration testing, excitation force application and test instrument measurement error calibration, in particular to a method and device for applying an excitation force in a spatial direction based on piezoelectric stacks. Background technique [0002] Vibration test is a basic test in the field of engineering technology, and also one of the important means of industrial product development. Parts, components, and even complete machines in industrial production basically need to undergo vibration tests to determine their mechanical properties such as reliability and strength. Therefore, vibration testing has been widely used in many important engineering fields, such as calibration experiments of various force measuring instruments, judging the dynamic strength of various components and the performance and reliability of various mechanical equipment, etc. Therefore, as the key equipment of vibration test, the per...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/02
Inventor 周晓勤侯强刘强王荣奇
Owner JILIN UNIV
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