Satellite sensitive load system and magnetic levitation nonlinear vibration isolator and design method thereof

A sensitive load and design method technology, applied in the direction of aerospace vehicle guidance devices, etc., can solve the problems that have not yet collected data, no explanations or reports have been found, and achieve the effect of good broadband vibration isolation performance, simple structure, and stable magnetic field

Active Publication Date: 2015-01-07
SHANGHAI SATELLITE ENG INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, there is no description or report of the similar technology of t

Method used

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  • Satellite sensitive load system and magnetic levitation nonlinear vibration isolator and design method thereof
  • Satellite sensitive load system and magnetic levitation nonlinear vibration isolator and design method thereof
  • Satellite sensitive load system and magnetic levitation nonlinear vibration isolator and design method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Such as figure 1 As shown, this embodiment provides a magnetic levitation nonlinear vibration isolator, including three permanent magnets, the three permanent magnets are coaxially arranged in series, wherein the permanent magnets at both ends are fixed, and the permanent magnets in the middle are only along the Axial free movement.

[0047] Further, the permanent magnet located in the middle is provided with an output rod along the axial direction.

[0048] Further, it also includes an outer casing, the three permanent magnets are packaged inside the outer casing, and the output rod protrudes from the outer casing.

[0049] Further, the output rod is connected with the outer housing through a linear bearing, which is used to ensure that the output rod only moves along the axial direction.

[0050] Further, the three permanent magnets are cylindrical permanent magnets, and the permanent magnets at both ends have the same shape and size.

[0051] The design method of ...

Embodiment 2

[0085] This embodiment provides a satellite sensitive load system, including a satellite platform, a satellite sensitive load, and a vibration isolation system installed between the satellite platform and the satellite sensitive load, and the vibration isolation system includes several above-mentioned maglev nonlinear vibration isolators .

[0086] Further, the satellite sensitive load is connected to the magnetic levitation nonlinear vibration isolator through an output rod, and the satellite platform is fixedly connected to the magnetic levitation nonlinear vibration isolator.

[0087] Further, the magnetic levitation nonlinear vibration isolator is one, and the output rod is connected to the external housing through a linear bearing, which is used to ensure that the magnetic levitation nonlinear vibration isolator only moves along the axial direction, forming a single degree of freedom vibration isolation system.

[0088] Further, there are multiple magnetic suspension non...

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Abstract

The invention discloses a satellite sensitive load system and a magnetic levitation nonlinear vibration isolator and a design method thereof. Aiming at the performance index requirement of isolated load, magnetic field force of a series magnetic levitation system is analyzed to obtain the influence on the system rigidity from the diameters of different permanent magnets and the widths of different air gas so as to form the magnetic levitation nonlinear vibration isolator with three permanent magnets in serial connection; and the magnetic levitation nonlinear vibration isolator is provided with an output rod only moving in the axial direction, and is encapsulated by a shell. A vibration isolating system formed by the magnetic levitation nonlinear vibration isolator is mounted between a satellite platform and a satellite sensitive load. The magnetic levitation nonlinear vibration isolator has such advantages as no contact, nonlinearity, variable rigidity, small amplitude and low rigidity, and large amplitude and high rigidity, and can effectively isolate the transfer of vibration to achieve the purpose of wide-frequency vibration isolation when being capable of bearing the weight of a vibration-isolated object and guaranteeing the manufacturability.

Description

technical field [0001] The invention relates to the technical field of vibration isolation of satellite loads, in particular to a satellite sensitive load system, a magnetic levitation nonlinear vibration isolator and a design method thereof. Background technique [0002] With the development of aerospace technology, the performance and accuracy of imaging payloads and high-resolution optical payloads continue to improve, and the high-precision and high-stability payloads carried by satellites have higher and higher requirements for the stability of satellite platforms. The impact can no longer be ignored, and vibration isolation measures must be taken to ensure the normal operation of the satellite payload. [0003] The main vibrations of spacecraft are roughly divided into two categories: one is the frequency range of 30-250 Hz or more, and the characteristic is that the amplitude of the excitation is small, which is called high-frequency small-amplitude vibration; the sec...

Claims

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Application Information

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IPC IPC(8): B64G1/38
Inventor 钟鸣申军烽周徐斌刘兴天周静黄俊杰
Owner SHANGHAI SATELLITE ENG INST
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