Voice coil vibration isolating/vibration suppressing structure and control method thereof

A control method and vibration isolation technology, applied in the direction of casing/cover/support, electrical components, electromechanical devices, etc., to achieve high reliability, increase vibration attenuation rate, and mature technology

Inactive Publication Date: 2013-06-19
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the rapid development of science and technology, high-precision equipment is more and more widely used, and its requirements for the vibration isolation performance and anti-interference ability of the installation structure are also getting higher and higher. The traditional passive vibration isolation structure has gradually been unable to meet the needs. Active control technology is an effective way to solve this problem

Method used

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  • Voice coil vibration isolating/vibration suppressing structure and control method thereof
  • Voice coil vibration isolating/vibration suppressing structure and control method thereof
  • Voice coil vibration isolating/vibration suppressing structure and control method thereof

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Embodiment Construction

[0030] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0031] The present invention is a novel voice coil vibration isolation / vibration suppression structure based on negative stiffness and active vibration control, such as figure 1 , figure 2 , image 3 As shown, it includes power part 1, support structure part 2 and measurement part 3.

[0032] The power part 1 includes an upper voice coil motor 101 and a lower voice coil motor 102. The upper voice coil motor 101 includes an upper voice coil motor coil 103 and an upper voice coil motor magnet 104. The upper voice coil motor coil 103 is connected to the support structure part 2 by screws. The installation platform 201 is fixedly connected, and the upper voice coil motor magnet 104 is fixedly connected with the middle platform 202 of the supporting structure part 2 through screws, and the upper voice coil motor coil 103 is located in the annular groove...

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Abstract

The invention discloses a voice coil vibration isolating / vibration suppressing structure and a control method thereof. An intermediate platform is additionally arranged between an installation platform and a substrate, the intermediate platform, the installation platform and the substrate are serially connected with each other through two voice coil motors and two supporting springs, radial displacement of the three platforms is restricted by three plain shafts. When an upper voice coil motor is started, negative stiffness can be provided between the installation platform and the intermediateplatform, the negative stiffness is serially connected with positive stiffness provided by a lower spring, so the overall stiffness of the structure can theoretically approach infinity so as to inhibit the direct interference. When a lower voice coil motor is started, a variable damping can be provided, so the substrate vibration can be well isolated when being transmitted to the intermediate platform, the low-frequency resonance caused by the flexibility of the lower spring can be weakened and even eliminated, and the influence of the substrate broadband vibration on high-precision equipmenton the installation platform can be greatly reduced.

Description

technical field [0001] The invention relates to a voice coil vibration isolation / vibration suppression structure and a control method thereof, belonging to the technical field of active control of structural vibration. Background technique [0002] With the rapid development of science and technology, high-precision equipment is more and more widely used, and its requirements for the vibration isolation performance and anti-interference ability of the installation structure are also getting higher and higher. The traditional passive vibration isolation structure has gradually been unable to meet the needs. Active control technology is an effective way to solve this problem. [0003] Generally speaking, there are two main interference factors faced by high-precision equipment and its installation structure. On the one hand, it comes from the direct interference of the equipment itself, such as the interference force caused by the change of equipment weight; vibration disturb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K33/18H02K5/24
Inventor 李伟鹏钟晓宇黄海
Owner BEIHANG UNIV
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