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Rope parallel configuration-based ultralong-scale flexible-structured active vibration suppression device

A flexible structure and configuration technology, applied in the field of machinery, to reduce or eliminate the vibration of flexible bodies and the effect of a wide range of cable length changes

Active Publication Date: 2018-03-30
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Wing structures widely adopt various truss structures and support payloads, but the problem caused by this type of light flexible structure is that it becomes a dynamic vibration absorber for the main structure, and the vibration amplitude generated by it will be much higher than the vibration amplitude of the main structure , effective measures must be taken to actively suppress the vibration

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  • Rope parallel configuration-based ultralong-scale flexible-structured active vibration suppression device
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  • Rope parallel configuration-based ultralong-scale flexible-structured active vibration suppression device

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Embodiment Construction

[0019] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0020] The present invention is an active vibration suppression device for ultra-long-scale flexible structures based on cable parallel configuration, which is used to weaken or eliminate the vibration of ultra-long-scale flexible structures, and mainly includes a support frame 1 and a motion mechanism.

[0021] like figure 1 As shown, the supporting frame 1 is fixed on the base of the controlled object; the flexible structure 5 is connected to the cable-extracting mechanism installed on the supporting frame 1 through four ropes, and the four cable-extracting mechanisms are symmetrically distributed on both sides of the flexible structure 5 , four ropes are active cables 4. The active cable 4 links to each other with the cable outlet mechanism, and the length of the cable outlet can be controlled manually.

[0022] like figure 2 As shown, th...

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Abstract

The invention discloses a rope parallel configuration-based ultralong-scale flexible-structured active vibration suppression device which comprises a supporting framework and a moving mechanism; an unfolding wing, which is an ultralong flexible structure, of an on-orbit satellite is used as a specific analysis object; the moving mechanism is fixed on a satellite body through the supporting framework; multiple rope releasing mechanisms are symmetrically distributed on two sides of the unfolding wing; multiple ropes led out by the rope releasing mechanisms are connected with the unfolding wing;and output forces of the multiple ropes are distributed through a rope control algorithm, so that vibration of the flexible mechanism is weakened or eliminated. Compared with a conventional vibrationsuppression device, the rope parallel configuration-based ultralong-scale flexible-structured active vibration suppression device is simple in structure, low in manufacturing cost, large in rope length change range and applicable to active vibration suppression of ultralong-scale flexible structures such as the unfolding wing of the satellite.

Description

technical field [0001] The invention belongs to the technical field of machinery, and in particular relates to an active vibration suppression device for an ultra-long-scale flexible structure based on a cable parallel configuration. Background technique [0002] The present invention takes the satellite antenna structure with ultra-long scale wings as the research background. Generally speaking, the antenna wings of this type of satellite can reach more than 100 meters in length. Wing structures widely adopt various truss structures and support payloads, but the problem caused by this type of light flexible structure is that it becomes a dynamic vibration absorber for the main structure, and the vibration amplitude generated by it will be much higher than the vibration amplitude of the main structure , effective measures must be taken to actively suppress the vibration. [0003] Compared with the series mechanism, the cable-driven parallel mechanism has the characteristics...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/02
CPCF16F15/02
Inventor 唐晓强季益中孙海宁侯森浩崔志伟田斯慧
Owner TSINGHUA UNIV