Multi-point multi-loop parallel temperature control system under vacuum low temperature environment

Abstract

The invention discloses a multi-point multi-loop parallel temperature control system suitable for operating in a vacuum environment. The system is mainly composed of a central control unit (100), a temperature acquisition unit (200) and a distributed temperature control unit (300). The central control unit (100) is used for instruction issuing and data transmission of the temperature control function of the system, issues the control information of a central control terminal to a temperature acquisition interface unit (210) and a distributed temperature control interface unit (310), and receives the system operation information, status information, process information, data information and the like sent by the temperature acquisition interface unit (210) and the distributed temperature control interface unit (310). According to the invention, the data acquisition speed is greatly improved; the acquisition period is increased from 60S to milliseconds; the fastest acquisition speed is upto 50Hz (20ms); and the corresponding time of a control instruction is increased from 400ms to 5ms.

Description

technical field [0001] The invention belongs to the technical field of space environment simulation, and in particular relates to a multi-measuring point and multi-loop parallel temperature control system and a temperature control method used in a vacuum low-temperature environment. Background technique [0002] After artificial satellites and other spacecraft enter the orbital flight stage, they are in an ultra-high vacuum and ultra-low temperature environment for a long time, and are affected by the heat flow environment outside the space. In order to verify the correctness of the satellite thermal design, ensure the long-term reliable work of the satellite, and complete the For various scheduled tasks, in the process of developing satellites, vacuum thermal tests must be carried out on the spacecraft system level and component level in the simulated space vacuum, cold darkness and external heat flow environment in accordance with the provisions of the test specifications. ...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a new parallel temperature control system with simple structure and convenient use for the vacuum thermal test of space environment simulator, so as to solve the problems of serious control lag in the existing multi-measuring point and multi-loop vacuum thermal test.

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