基于分布式网络的航天器真空热试验控制系统

传统的航天器真空热试验控制系统采用集中控制模式,系统精确度和可靠性较低,无法满足新型航天器的研制需求.为此设计了一套基于分布式网络、具备高可靠性和高控制精确度的控制系统.该控制系统所有终端均遵循以太网传输控制协议/因特网互联协议,以实现分布式的网络通信,并采用航天产品可靠性设计原则；同时在系统设计中采用增量式数字比例积分微分(PID)控制算法,运用模糊数学的基本理论和方法,设计了一种模糊自适应PID控制算法.控制系统中运用了数字信号处理技术,以保证控制能力的实现.经相关测试表明,该控制系统控制精确度高,动态特性良好,抗干扰能力强,可满足新型航天器研制需求.

Vacuum thermal test control system based on distributed network

Traditional control system for spacecraft vacuum thermal test employs centralized control model, which bears low precision and low reliability, and can not meet the requirement of new spacecraft development. A new control system with high reliability and high precision is developed based on distributed network. All the terminals in the system comply with Transmission Control Protocol/Internet Protocol to achieve distributed network communication, and adopt the reliability design principles of aerospace product. A fuzzy adaptive control algorithm is proposed based on fuzzy mathematics theory and incremental Proportional Integral Differential（PID） control in system design. Digital signal processing technology is applied in the control system to ensure control capability. The results of relevant, test after the development show that the control system features high control precision, good dynamic characteristic and strong anti-interference ability, which can meet the requirement of new spacecraft development.