Semi-active vibration-isolating platform employing magnetorheological damping technology

A technology of magnetorheological damping and magnetorheological dampers, which is applied in the field of semi-active vibration isolation platforms, can solve problems such as insufficient reliability and increased quality, and achieve the effects of reducing quality, improving vibration control accuracy, and preventing lateral shaking

Inactive Publication Date: 2009-08-12
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of insufficient reliability and heavy mass increase of the existing active-pas...

Method used

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  • Semi-active vibration-isolating platform employing magnetorheological damping technology
  • Semi-active vibration-isolating platform employing magnetorheological damping technology
  • Semi-active vibration-isolating platform employing magnetorheological damping technology

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specific Embodiment approach 1

[0007] Specific implementation mode one: (see Figure 1 ~ Figure 3 ) The semi-active vibration isolation platform of this embodiment is composed of a passive vibration isolation device, a semi-active control device and an anti-sway device 3, and the passive vibration isolation device includes an upper platform 1, a lower platform 6 and at least three elastic support rods 4, so The above-mentioned upper platform 1 and the lower platform 6 are circular rings, at least three elastic support rods 4 are installed between the upper platform 1 and the lower platform 6, and the upper end and the lower end of each elastic support rod 4 are connected with the upper platform respectively. The lower end surface of 1 is fixedly connected with the upper end surface of lower platform 6, and the middle part of each elastic support rod 4 is bent into an outwardly convex arc; the semi-active control device is composed of a plurality of magneto-rheological dampers 8 and a plurality of hinges 7, ...

specific Embodiment approach 2

[0008] Specific implementation mode two: (see figure 1 ) The number of elastic support rods 4 in this embodiment is three to six. With such a setting, the reliability is higher. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0009] Specific implementation mode three: (see figure 1 ) The elastic support rod 4 of this embodiment is made of carbon fiber reinforced aluminum composite material. The tensile strength of carbon fiber reinforced aluminum composite material reaches 665MPa, and the density is 2400kg / m 3 , the modulus of elasticity reaches 210GPa. Such setting better meets the requirements of high strength, light weight and low cost of the aerospace structure. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a semi-active vibration isolation platform adopting magneto-rheological damping technology, relates to a semi-active vibration isolation platform, and aims to solve the problems that the prior active-passive integrative complete vibration isolator has insufficient reliability and has large mass increment. At least three elastic supporting rods are arranged between an upper platform and a lower platform, an upper end head and a lower end head of each elastic supporting rod are fixedly connected with a lower end face of the upper platform and an upper end face of the lower platform respectively, and the middle part of each elastic supporting rod is bent into a circular arc shape protruding outwards; each magneto-rheological damper is arranged in the circular arc formed in the middle part of the corresponding elastic supporting rod, and an upper end head and a lower end head of the magneto-rheological damper are hinged with the elastic supporting rods through hinges; and a first web plate is arranged on the inner wall of the upper platform, a second web plate is arranged on the inner wall of the lower platform, an upper sleeve is sleeved with a lower sleeve, an upper end face of the upper sleeve is fixedly connected with the first web plate, and the lower end of the lower sleeve is fixedly connected with the second web plate. The semi-active vibration isolation platform reduces the quality of the vibration isolation platform, and improves the reliability.

Description

technical field [0001] The invention relates to a semi-active vibration isolation platform. Background technique [0002] The worst environment in the life cycle of the satellite is the vibration environment during the launch process, during which it is subjected to various loads. The harsh vibration environment is often the main cause of damage to the satellite. Improving the vibration environment during the satellite launch process is to improve the satellite An important measure of launch safety and reliability. The connection interface between the traditional vehicle and the satellite is the star-rocket connection adapter, which usually adopts a conical shell structure with low damping and high rigidity, which makes it possible to transfer almost all static and dynamic loads from the vehicle. Degrade the performance and reliability of the satellite. By integrating the vibration isolation and damping functions in the satellite-rocket connection adapter structure, the vi...

Claims

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Application Information

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IPC IPC(8): F16F15/023F16F15/04F16F9/53
Inventor 陈照波涂奉臣方勃徐毅坚
Owner HARBIN INST OF TECH
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