Microsatellite active heat controlling system based on LHP passive heat elimination

Abstract

The invention discloses a microsatellite driving heat controlling system based on LHP passive heat elimination, which comprises a heat current temperature data processing module and an active heat controlling device, wherein the active heat controlling device has the structure that an LHP return flow channel and an LHP steam channel are respectively arranged between an LHP condenser and an LHP evaporator, a heat flow sensor is bonded between a heating device and the LHP evaporator, a temperature sensor A is arranged on the heating device, the LHP condenser is arranged on the inner surface of a radiating surface radiator, the outer surface of the radiating surface radiator is provided with grooves A and B, and temperature sensors are respectively arranged in the grooves A and B; the heat current temperature data processing module comprises a temperature channel deviation generating unit, a heat current channel deviation generating unit, a two-channel deviation signal fusing unit and a heat current and temperature control converting unit. The driving heat controlling system realizes the two-channel data fusion of the temperature and the heat current,, increases the response speed of the heat controlling system of the microsatellite, eliminates the frequent vibration of a heat control shutter, and prolongs the service life of the mechanical structure of the heat control shutter under the premise that the good steady-state performance of the heat controlling system is ensured.

Description

technical field [0001] The present invention relates to a thermal control system, more particularly to an active thermal control system for micro-satellites based on LHP passive heat dissipation. Background technique [0002] Microsatellites refer to microsatellites with a mass below 100Kg. Due to the design concept and manufacturing process of large-scale integrated circuits, microsatellites have the advantages of small size, light weight, and low manufacturing and launch costs. They are widely used in communications, military, and geological exploration. , Environmental and disaster monitoring, transportation, meteorological services, scientific experiments, deep space exploration and other aspects have a wide range of applications. [0003] In the microsatellite platform, the thermal control system plays an important role. When flying in orbit, the microsatellite works in a harsh external thermal environment. If no thermal control measures are added, a large change in the...

AI Technical Summary

Problems solved by technology

The early active thermal control system used temperature as the control reference quantity, and had good control characteristics in the steady state. However, when the external heat flow disturbance existed, the dynamic process would fluctuate for a long time, resulting in frequent movement of the shutters and excessive wear of the mechanical structure of the device. As a result, its life and reliability are limited, which is not conducive to its long-term use

Images