本文讨论了数字余度飞行控制系统中的几个主要问题。根据随机过程假设提出了一种故障监控门限值的选取方法:余度管理软件的分时多速率结构,以及基于卡尔曼滤波器的解析余度方案。另外,本文还提出了伺服器均衡回路的独立性概念,从而解决了均衡回路的设计问题。 This article discusses several key issues in digital residual flight control systems. According to the stochastic process assumption, a fault monitoring threshold selection method is proposed: the time-sharing multi-rate structure of redundancy management software, and the solution based on Kalman filter. In addition, this paper also proposed the concept of independence of the server equalization circuit, thus solving the design problem of the equalization circuit.