Force-controlled electromagnetic permanent magnetic composite excitation vibration platform

A composite excitation and shaking table technology, applied in vibration testing, fluids utilizing vibration, measuring devices, etc., can solve the problems of inability to realize low frequency drive, many components and links, and inability to realize efficient direct drive and high reliability drive, etc. Achieve the effects of good rigidity, precise and controllable vibration displacement, and simple mechanism

Active Publication Date: 2011-10-05
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, this prior art is realized through the driving form of voice coil motor "equipped with a moving coil", and requires drive transmission links such as the drive motor and the screw rod connected to it.
In this way, the vibration equipment based on the dynamic coil drive is difficult or impossible to achieve low-frequency drive within 5 Hz, and its drive involves many components and links. The drive also requires the motor and the screw and screw mechanism to follow the movement by controlling the traction carriage. The synchronous movement of the platform, as well as the side effects such as the involvement of the intake pipe and the lead wire and additional force, make the entire platform unable to achieve efficient direct drive and high reliability drive

Method used

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  • Force-controlled electromagnetic permanent magnetic composite excitation vibration platform
  • Force-controlled electromagnetic permanent magnetic composite excitation vibration platform
  • Force-controlled electromagnetic permanent magnetic composite excitation vibration platform

Examples

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Effect test

Embodiment 1

[0029] like figure 1 As shown, this embodiment includes: a casing 1, an electromagnetic coil 2, magnetic energy bodies 3, 4 and a load-carrying mechanism 5, wherein: the two magnetic energy bodies 3, 4 are respectively arranged up and down inside the casing 1 in the form of a horizontal axis of rotation and mutually Contact, the electromagnetic coil 2 is located inside the casing and faces the second magnetic energy body 4, and the loading mechanism 5 is movably arranged on the top of the casing 1 and is in contact with a magnetic energy body.

[0030] The housing 1 includes: a base 6, a rotating shaft support frame 7, a magnetic circuit inner frame 8 and an outer frame body 9, wherein: the outer frame body 9 is fixedly connected with the base 6, and the rotating shaft support frame 7 and the magnetic circuit are fixedly connected. The inner frame body 8 is respectively fixed and arranged in the outer frame body 9 of the fuselage and located inside and outside the electromagne...

Embodiment 2

[0045] like figure 2 As shown, this embodiment excites the corresponding driven body or driven body array 20 by arranging the above-mentioned several force-controlled electromagnetic permanent magnetic composite excitation vibration tables 19 in a linear array, a plane array or a three-dimensional array. And independently control or connect or connect their electromagnetic coils in series to form a corresponding force-controlled electromagnetic-permanent-magnet composite excitation vibration system. This system can be used to simulate and realize anti-vibration and anti-external load experiments on large-scale facilities such as bridges with long "length". Test work, used to simulate and realize the anti-vibration and anti-external load experiments on vehicles and large buildings such as road surfaces, ocean waves, earthquakes, etc., or to simulate the realization of three-dimensional external loads on vehicles and large buildings Experimental test and research on resistance ...

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Abstract

The invention discloses a force-controlled electromagnetic permanent magnetic composite excitation vibration platform in the technical field of electromagnetic drivers. The force-controlled electromagnetic permanent magnetic composite excitation vibration platform comprises a shell, electromagnetic coils, magnetic energy bodies and a carrying mechanism, wherein the two magnetic energy bodies are respectively arranged inside the shell in a manner of a horizontal rotating shaft and are in mutual contact, the two electromagnetic coils are respectively arranged inside the shell and positioned at two sides of the magnetic energy bodies, and the carrying mechanism is movably arranged on the top of the shell and is in contact with one magnetic energy body. The force-controlled electromagnetic permanent magnetic composite excitation vibration platform is a wide-band large-load and large-displacement vibration device or equipment which has the advantages of simple structure, high reliability and drive efficiency, no moving coil and lead following dragging hidden dangers, accuracy and controllability of amplitude and capability of realizing frequency of below 5Hz, i.e. from quasi-static to high frequency, and is driven by direct displacement generated by the electrically-excited rigid magnetic energy bodies.

Description

technical field [0001] The invention relates to a device in the technical field of electromagnetic drives, in particular to a force-controlled electromagnetic permanent-magnet composite excitation vibration table. Background technique [0002] In recent years, the demand for high-performance vibration testing equipment has become more and more urgent due to the need for vibration testing of aircraft or precision equipment in the fields of aerospace, aviation, and navigation. At present, the vibration equipment mainly includes hydraulic, pneumatic, electromagnetic and mechanical vibration equipment. Among them, hydraulic, pneumatic and mechanical vibration equipment cannot meet the requirements of vibration test performance in aerospace and other fields because of the low driving frequency that can be achieved. Because the electromagnetic drive adopts electromagnetic signal control, the realization of the drive is realized by the action of electromagnetic energy, the control...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B06B1/04G01M7/02
Inventor 杨斌堂孟光
Owner SHANGHAI JIAO TONG UNIV
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