A semi-physical simulation measurement method and system for temperature of communication satellite payload cabin equipment
A semi-physical simulation and communication satellite technology, which is applied to the temperature field of semi-physical simulation and measurement equipment to achieve the effects of high accuracy, high measurement accuracy and small calculation amount.
Active Publication Date: 2021-12-07
CHINA ACADEMY OF SPACE TECHNOLOGY
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[0004] The technical problem of the present invention is: to overcome the deficiencies of the prior art, to propose a semi-physical simulation method and system for measuring the temperature of the equipment based on the limited temperature measurement points of the heat radiation radiator of the load cabin, and to solve the problem of using the number of temperature measurement points of the communication satellite load cabin equipment The problem
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[0035] The patent of the invention is based on the heat dissipation design principle of the communication satellite load cabin equipment, and proposes a semi-physical simulation measurement method for the communication satellite load cabin equipment, which replaces the traditional temperature measurement method of setting the temperature measurement point for the load equipment and directly physically telemetry the temperature, and achieves a significant reduction in the load cabin. The purpose of using the number of temperature measurement points.
[0036] The space environment of satellites in orbit is approximately vacuum, so there are only two heat transfer methods: conduction and radiation. The satellite structural board is the temperature control boundary of the satellite. The equipment (components) in the satellite are installed on the structural board, and the heat is transferred to the structural board, and the heat is dissipated to the space through the structural boa...
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A semi-physical simulation measurement method and system for temperature of communication satellite payload cabin equipment, comprising: (1) constructing a physical domain; (2) setting characteristic temperature measurement points of the physical domain; (3) defining the mapping relationship between the physical domain and the equipment; (4) ) calculating the temperature numerical mapping relationship matrix; (5) performing mathematical operations according to the flight telemetry temperature data of each physical domain characteristic temperature temperature measurement point and the temperature numerical mapping relationship matrix to obtain the on-orbit flight temperature of the load compartment equipment. The present invention is based on the semi-physical simulation temperature measurement method of the limited temperature measurement points of the heat dissipation radiator of the load cabin, which has the advantages of simple principle, simple algorithm, small amount of calculation, high measurement accuracy, and strong universal applicability, and can replace the load equipment to set temperature measurement The traditional temperature measurement method of point direct physical telemetry temperature reduces the number of load cabin temperature measurement points by more than 70% (equivalent to a 40% reduction in the whole star), and reduces weight by about 6kg, and the load cabin temperature measurement engineering design, implementation and testing, etc. The cost-effectiveness ratio of development is reduced by about 70%.
Description
technical field [0001] The invention relates to a method and system for measuring the temperature of equipment based on a semi-physical simulation of limited temperature measuring points in a heat pipe network of a radiator radiator in a load compartment, and belongs to the technical field of temperature measurement of satellite load compartment equipment. Background technique [0002] The spacecraft is affected by various complex external heat flow when it is running in space, and its temperature change is a complex temperature field. The temperature of the spacecraft is reflected by the temperature sensor when it is in orbit. For this reason, a temperature sensor is installed on the spacecraft to measure the temperature. At present, the temperature sensors used for flight tests on domestic spacecraft mainly use thermistors, which are usually installed in the satellite structure body. Set the temperature measurement point (pasted thermistor) on the device to measure the sat...
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IPC IPC(8): G01K7/02
Inventor 刘百麟王敏李学林刘绍然王益红刘坤
Owner CHINA ACADEMY OF SPACE TECHNOLOGY