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Spatial six-degree-of-freedom vibration measuring and damping vibration attenuating method

A vibration measurement and degree of freedom technology, applied in vibration testing, measurement devices, non-rotational vibration suppression, etc. Good damping effect

Inactive Publication Date: 2012-08-08
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to achieve mutual non-interference, the structure is bound to be very complicated, and the purpose of multi-degree-of-freedom vibration reduction cannot be well achieved.

Method used

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  • Spatial six-degree-of-freedom vibration measuring and damping vibration attenuating method
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  • Spatial six-degree-of-freedom vibration measuring and damping vibration attenuating method

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Embodiment Construction

[0059] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0060] A vibration measurement and damping method for six degrees of freedom in space, comprising the following steps:

[0061] 1) Build a six-displacement sensor parallel measurement and damping mechanism:

[0062] Such as figure 1 , figure 2 with image 3 As shown, the six-displacement sensor parallel measurement and damping mechanism consists of a fixed platform 1, a lower ball joint 2, a telescopic rod 3, a displacement sensor 4, a moving platform 7, an upper ball joint 8, and a controllable single-degree-of-freedom damper 12. . The fixed platform 1 is a flat plate structure, and six lower spherical hinges 2 are installed on the fixed platform 1. The six lower spherical hinges 2 form a ring, and the six lower spherical hinges 2 are divided into three on the left and three on the right, and three on the left and right. The lower spherical hinge 2 is ...

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Abstract

The invention discloses a spatial six-degree-of-freedom vibration measuring and damping vibration attenuating method. The method comprises the following steps of: 1) erecting six-displacement-sensor parallel measuring and damping vibration attenuating mechanism; 2) fixing a detected motion object and a fixed platform; 3) obtaining a motion variation rule by using an expansion variation displacement time of an expansion pull rod, and obtaining a vibration rule of the detected motion object by using a measurement algorithm with a positive solution; 4) obtaining a damping value of a six-degree-of-freedom controllable damper required by the vibration by using a damping vibration attenuating algorithm; and 5) adjusting the damping value of the six-degree-of-freedom controllable damper to a value obtained by the damping vibration attenuating algorithm. According to the invention, six-degree-of-freedom measurements of three vibration displacements and three vibration angles of the motion object at the same measurement point are achieved by using one set of mechanism; meanwhile, the vibration control of the motion object can be achieved; and the spatial six-degree-of-freedom vibration measuring and damping vibration attenuating method disclosed by the invention has the advantages of high accuracy, simple structure, good flexibility, strong adaptability, wide application range and the like.

Description

technical field [0001] The invention relates to a vibration measurement and damping vibration reduction method with six degrees of freedom in space. The parallel mechanism of six displacement sensors is used to perform dynamic measurement of mechanical vibration displacement with six degrees of freedom in space for moving objects, and six groups of single degrees of freedom with spherical joints installed at both ends are used. The dampers are connected in parallel to form a space six-degree-of-freedom vibration damping shock absorber to reduce the vibration of moving objects according to actual needs. [0002] Six-degree-of-freedom vibration in space includes three-degree-of-freedom vibration displacement x(t), y(t), z(t) and three-degree-of-freedom vibration angle θ x (t), θ y (t), θ z (t), the vibration displacement and angular differentiation can be converted into vibration velocity, vibration acceleration, vibration angular velocity, and vibration angular acceleration. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/06G01B21/06G01B21/22F16F15/02
Inventor 郑万国谢志江袁晓东王成程倪卫蹇开林熊迁石万凯陈平
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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