提出了一种操作系统分级调度模型,该模型能够将多个传统子系统综合到一个应用平台中,并能保证各子系统在时间上相互独立.结合实时操作系统VxWorks,论述了该模型的最佳实践方法辅助时钟法,并对VxWorks的启动、存储管理,中断与异常管理等进行了详细论述.采用该模型在飞行器管理系统中将飞行控制系统、导航系统、数传模块以及任务管理系统等传统的子系统进行了综合,并给出了在某系统中的具体应用和性能评估,实验结果表明了该系统具有高性能、增量开发与部署的能力.%A hierarchical scheduling model of operating system is proposed, which make a number of traditional subsystems integrated to one application platform and isolated in temporal domain. Based on the real-time operating system VxWorks, the best practical method,the auxiliary clock scheduling algorithm is provided. The start-up, memory management, interrupt and exception management in VxWorks is depicted as well. And then the flight control system, navigation system, data transmission system and mission management system are integrated into one platform of vehicle management system by this hierarchical scheduling model. In the end, the performance evaluation is conducted, which indicates this project has features of high performance, incremental development and deployment.
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