本文讨论了没有机械备份的字飞行控制采用余度方法获得可靠性的必要。了飞行控制应用的限制和典型要求,为的是洞察系统结构发展的规律性、讨论了信号强化、故障检测,硬件和软件的权衡,内部测试和跟踪考虑,根据某一系统的经验说明那些地方有问题,那些地方没有困难。本文还提出映最新设计思想的典型四机构。 This paper discusses the necessity of using the redundancy method to obtain reliability in word-flight control without mechanical backup. Limitations and typical requirements for flight control applications in order to gain insight into the regularity of system architecture development and to discuss signal enhancement, fault detection, trade-offs between hardware and software, internal testing and tracking considerations, based on the experience of a given system There are problems, there is no difficulty in those places. This article also presents a reflection of the latest design ideas typical four institutions.