随着应用卫星的发展,要求卫星姿态控制精度越来越高,寿命越来越长.另方面从控制技术发展来看,采用星上计算机已成为必然趋势,加上对现代控制理论的应用,使得控制系统有可能设计成为一个多功能、高指标、并且具有高可靠性的容错系统,也就是说,当控制部件发生故障时,系统仍然可以继续工作下去(或者稍为降低一些性能). With the development of applied satellites, the precision of satellite attitude control is required to be higher and higher, with longer and longer lifespan.On the other hand, in view of the development of control technology, the use of on-board computers has become an inevitable trend. Coupled with the application of modern control theory, This makes it possible to design a control system as a versatile, high-performance, fault-tolerant system with high reliability, that is to say the system can continue to work (or slightly reduce its performance) even in the event of a control component failure.