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本文介绍数字飞行控制计算机系统多机间的同步与调度管理算法的设计与实现。同步与调度管理是飞控计算机系统的重要组成部分,它的特性好坏,直接影响整个系统的性能. 本文提出以软件为主的同步方案。系统主频时钟为4MHz,同步周期为15ms,异步度小于30μs,但保持有一定的异步度,以减少故障的相关性。此外。本文着重讨论同步失效问题的解决,失步状态下的系统重构与恢复,系统死锁的预防与消除,以及调度管理的算法。
This article describes the digital flight control computer system synchronization and scheduling management algorithm between the design and implementation. Synchronization and scheduling management is an important part of the flight control computer system, its characteristics are good or bad, directly affect the performance of the entire system.This paper presents a software-based synchronization program. The system frequency clock is 4MHz, the synchronization cycle is 15ms, the asynchronous degree is less than 30μs, but keep a certain degree of asynchronous to reduce the fault correlation. In addition. This article focuses on the solution of synchronization failure, system reconfiguration and recovery in out of synchronization, the prevention and elimination of system deadlock, and the scheduling management algorithm.