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Based on the requirements analysis of the high reliability of long-period spacecraft vacuum thermal test, with server cluster technology, a high available distributed measurement and control system for spacecraft vacuum thermal test is designed. This paper expounds the system structure, the detailed method of system build and implement. The scheme can optimize hardware resource allocation, achieve failover and fault recovery, guarantee the continuous and stable running of measurement and control system during the long test period. Finally, test proves that the system shutdown time is less than 15 minutes and the high available system can relieve the loads of operators, decrease the test hazard due to system defects and man-made errors, and improve the precision, efficiency, automation of spacecraft vacuum thermal test. Index Terms - Vacuum Thermal Test; Distributed Measurement and Control System; High Availability; Cluster

Design and Implementation of a High Available Distributed Measurement and Control System for Spacecraft Vacuum Thermal Test