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Precise Synchronous Gravity Compensation System for Spatially Expandable Loop Antennas

A loop antenna and gravity compensation technology, applied in the aerospace field, can solve the problems of principle error, insufficient unloading force, non-plumb effect of hanging wire, etc., and achieve the effect of ensuring synchronization and eliminating principle error.

Active Publication Date: 2021-07-20
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the positioning of the pulley cart adopts a passive control method, and the hanging wire is a flexible rope, the hanging wire will have a non-plumb effect during the movement, which will result in insufficient unloading force and the influence of lateral external force on the antenna deployment, namely There is a principle error in this method
[0005] In addition, the previous research proposed a scheme that uses two motors to drive the antenna deployment and the pulley positioning of the follow-up system respectively. In the application, the suspension point of the antenna will be out of sync with the movement of the pulley cart of the servo system, that is, this method also has errors

Method used

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  • Precise Synchronous Gravity Compensation System for Spatially Expandable Loop Antennas
  • Precise Synchronous Gravity Compensation System for Spatially Expandable Loop Antennas
  • Precise Synchronous Gravity Compensation System for Spatially Expandable Loop Antennas

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0034] As shown in the figure, the spatially expandable loop antenna precisely synchronizes the gravity compensation system, including the truss, the main road stand, the motor drive system, the servo system and the suspension system;

[0035] The truss is composed of a plurality of truss unit structures, and the truss unit structure is composed of a synchronous hinge, a horizontal bar, a T-shaped hinge, a vertical bar and a telescopic bar. The T-shaped hinge connects the horizontal bar, the telescopic bar and the vertical bar. The synchronous hinge connects the horizontal bar and the vertical bar, and a cable is installed in the telescopic bar and the T-shaped hinge. When the cable shrinks, the cable drives the telescopic bar to shrink, thereby realizing the unfolding of the truss unit structure from the folded state;

[0036] The general road ...

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Abstract

The invention discloses an accurate and synchronous gravity compensation system for a spatially expandable loop antenna, which includes a truss, a main road stand, a motor drive system, a follow-up system and a suspension system; the active positioning of the pulley is driven by an antenna extension cable motor to ensure follow-up The synchronization between the system and the antenna movement; the follow-up system with active positioning of the pulley cart solves the problem of insufficient vertical suspension force of the hanging wire and the generation of lateral additional external force caused by the non-plumb effect of the hanging wire in the traditional hanging wire counterweight method problem, eliminating the principle error of the traditional hanging wire counterweight method.

Description

technical field [0001] The invention belongs to the field of aerospace, in particular to a space expandable loop antenna precise synchronous gravity compensation system. Background technique [0002] Antennas are the core components of satellite communications, and can be divided into three types according to different types of reflectors: solid surface deployable antennas, inflatable antennas, and mesh reflector antennas. The loop antenna in the mesh reflector antenna has become the ideal structural form of the current spaceborne antenna due to its advantages of high storage rate, light weight, and large aperture. [0003] The loop antenna is mainly composed of front cable net, metal reflector net, adjustment cable, peripheral truss, rear cable net and so on. Among them, the peripheral truss is composed of multiple truss units, and each unit is composed of synchronous hinges, T-shaped hinges, horizontal bars, vertical bars, and diagonal bars. The antenna is fixedly connec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G7/00
CPCB64G7/00
Inventor 何柏岩彭浩
Owner TIANJIN UNIV
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