Film antenna tension active adjusting mechanism

Abstract

The invention provides a film antenna tension active adjusting mechanism. The film antenna tension active adjusting mechanism comprises a film antenna, a shell, a power source, a connecting piece, a tension sensor and a controller. The connecting piece is connected with the film antenna through the tension sensor; the tension sensor is electrically connected with the controller and used for detecting the tension force of the film antenna in real time and feeding back the tension force to the controller; the power source is installed on the shell; the power source is in driving connection with the connecting piece; the power source is electrically connected with the controller; the power source receives an electric signal sent by the controller after the controller compares a numerical value transmitted by the tension sensor with a set value; the driving source after receiving the electric signal drives the connecting piece to pull the film antenna to move. The mechanism is used for adjusting the tension of the film to keep the tension constant and keeping the profile precision of the film antenna.

Description

technical field [0001] The invention relates to the field of spacecraft mechanism adjustment technology, and in particular, relates to an active tension adjustment mechanism for a film antenna. Background technique [0002] Since the mid-1860s, with the rapid development of space science and technology, the demand for space-borne antennas has been increasing day by day, and the requirements for various technical indicators have become higher and higher, and the aperture of satellite antennas has become larger and larger. Due to the limitation of the carrying space of space vehicles (launch vehicles or space shuttles), satellite antennas are forced to develop in the direction of deployability. Film antennas have gradually become the best choice for low-frequency antennas due to their high storage ratio and light weight. [0003] The so-called film line mainly refers to the inflatable deployable antenna. Its working principle is as follows: firstly, paint that can reflect rad...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of on-orbit real-time adjustment of the shape and surface accuracy of the film antenna, the present invention proposes an active adjustment mechanism for the tension force of the film antenna, which can adjust the precision of the film antenna in real time, and has high stability and reliability. Small disturbance of the installation platform

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