分布式航天器真空热试验测控系统设计

A Distributed Measurement and Control System for Spacecraft Thermal Vacuum Test

摘要:

针对航天器真空热试验对数据采集、温度控制及系统功能的要求,设计开发了一套基于LXI总线的分布式测控系统。针对目前控制系统对于温度控制系统大滞后、非线性的控制性能不佳的缺点,采用模糊自整定PID算法提升了当前控制系统的控制品质,实现了对航天器的外热流模拟与温度控制。实际运行结果表明,该系统具有可靠性高、扩展性强、控制精度高等优点,并且试验准备时间比原有系统减少一半以上,提高了试验人员的工作效率。

Abstract:

According to the requirement of spacecraft vacuum thermal test, such like data acquisition, temperature control and system function, a distributed measurement and control system based on LXI bus is designed and developed in this paper. The system uses fuzzy self-tuning PID control algorithm to enhance the control quality of current system, and it implements the function of spacecraft thermal simulation and temperature control. Actual operation results show that the system has the advantages of good usability ,high reliability, strong expansibility, raising ability to cope with complex thermal test measurement and control requirements. It reduces half of the preparing time, and greatly improves experiment personnel's work efficiency.