Three-component standard vibration table based on lock type decoupling device

Abstract

A three-component standard vibration table based on a lock type decoupling device is disclosed. The vibration table comprises: a pedestal, an X-direction electromagnetic vibration table, a Y-direction electromagnetic vibration table, a Z-direction electromagnetic vibration table and a three-dimensional vibration platform. The each electromagnetic vibration table is connected with the three-dimensional vibration platform through a motion decoupling apparatus. The motion decoupling apparatus comprises: a first frame and a second frame. The first frame and the second frame are formed by outer sides, inner sides, first connection sides and second connection sides, wherein the first connection sides and the second connection sides are located between the outer sides and inner sides. The outer sides are opposite to the inner sides. The inner side of the frame is inserted into the other frame. Minimal gaps exist between the inner side of the first frame and the inner side and the outer side of the second frame. An interval is arranged between the inner side of the second frame and the outer side of the first frame. An airflow channel is communicated with an external compressed air source. The outer side of the first frame is connected with the electromagnetic vibration tables and the outer side of the second frame is connected with the three-dimensional vibration platform. A structure is simple. Installation is convenient. A decoupling effect is good. The vibration table is suitable for a vibration calibration system.

Description

technical field [0001] The invention relates to a three-component standard vibration table based on a locking type decoupling device. technical background [0002] Multi-dimensional vibration sensors are widely used in seismic monitoring, geological exploration, multi-dimensional vibration environmental tests and other fields. With the continuous development of modern vibration measurement technology, various multi-dimensional vibration sensors are also emerging. However, at present, there is no unified national or industry standard for the calibration of multi-dimensional vibration sensors at home and abroad, which greatly limits the development of multi-dimensional vibration research. [0003] At present, the calibration of three-dimensional vibration measuring sensors is mostly carried out sequentially on the three measurement axes using a single-dimensional vibration calibration system. The accuracy is low, and it is difficult to obtain a sensitivity matrix that reflect...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the disadvantages of the existing technology, which can only use a single-dimensional vibration calibration system to calibrate the three measurement axes sequentially when calibrating the three-dimensional vibration sensor, it takes a long time, the data processing is complicated, and it is difficult to obtain the sensitivity matrix reflecting the coupling relationship between dimensions. The invention provides a three-component standard vibration table based on a lock-type decoupling device that can simultaneously excite three measurement axes of a three-dimensional vibration sensor

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