新型四余度功率电传推力矢量控制技术

通过对现有不同类型功率电传(PBW—Power by wire)系统进行分析,根据航天运载器使用特点,提出了理想PBW系统的概念,并基于负载敏感原理提出了新型PBW系统方案。在此基础上,针对载人航天等高可靠性应用场合,提出了四余度PBW系统方案。通过仿真研究证明所提出的新型PBW系统具有比传统PBW系统更好的综合性能,是最接近于理想PBW系统的设计方案。通过对四余度PBW系统在故障情况下的工作情况进行仿真研究表明,四余度PBW系统具有两次故障工作、三次故障安全的余度等级。文中所提出的系统方案在未来大推力固体火箭发动机和氢氧发动机推力矢量控制系统中具有广泛的应用前景。

New quad-redundant power by wire thrust vector control system

In this paper, some currently available PBW systems were analyzed firstly.According to characteristics of launching vehicle, the concept of ideal PBW system was proposed.The new PBW system based on load sensing principle was designed.Based on this, a new quad-redundant PBW system with high reliability that meets the requirement of manned space flight was proposed.By simulation studies, the new PBW system shows significantly better overall performances than the other PBW systems.It is the system that is mostly close to the concept of ideal PBW system.The simulation results of quad-redundant PBW system under faulty conditions show that the system has redundant performance of twice-fault working and three-fault safe.The new PBW system has a wide potential application in thrust vector control of solid rocket engine and hydrogen oxygen engine.