Abstract
At present, the spacecraft thermal test temperature measurement system has not been designed effectively. In the spacecraft experiment, the defects of anti-interference ability and system instability are exposed. Firstly, the composition and status of the temperature measurement system of spacecraft thermal test are analyzed. And then we set up a system to interfere with fault tree according to existing problems, locate the problem and determine the source of the interference. Finally, the anti-interference scheme and implementation are developed, and the test data of anti-interference test system is set up. The anti - jamming performance of the anti - jamming scheme of thermal test temperature acquisition system was evaluated. The results show that it can improve the anti-jamming capability of the spacecraft thermal test temperature acquisition system and improve the stability of the system.
Highlights
Vacuum thermal test is an indispensable project in the development of spacecraft; Temperature measurement and control in the experiment have a direct on the test results
The correctness and validity of temperature data measurement is the key to the success or failure of spacecraft vacuum thermal test
In order to guarantee the accuracy of measurement, analyse the causes of interference 、 the interference sources 、 the interference form, improve the antiinterference ability of temperature measuring system
Summary
Vacuum thermal test is an indispensable project in the development of spacecraft; Temperature measurement and control in the experiment have a direct on the test results. The correctness and validity of temperature data measurement is the key to the success or failure of spacecraft vacuum thermal test. In order to guarantee the accuracy of measurement, analyse the causes of interference 、 the interference sources 、 the interference form, improve the antiinterference ability of temperature measuring system. The present situation and composition of temperature measurement system are analyzed in this paper, the cause of interference and the interference sources are determined. At last the solutions proposed we choose in this paper can solve the problems existing in the spacecraft thermal test temperature measurement system
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