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下一代航空电子系统必将是模块化和可配置的,而中间件技术是实现此目标的重要途径,考虑到实际的应用环境,对实时性的支持是其重要特征。针对这样的需求和目标,着重研究具有负载均衡策略的实时CORBA调度服务。结合端到端调度服务模型,设计了一个基于负载均衡的调度服务框架,用形式化语言对其进行了描述,并对负载均衡策略和全局调度算法进行了理论分析。解决了实时CORBA规范中节点独立调度的缺陷,使系统的调度服务具有全局优化性,为本系统投入实际应用打下坚实的理论基础。
The next generation of avionics systems is bound to be modular and configurable, and middleware technology is an important way to achieve this goal, taking into account the actual application environment, support for real-time is an important feature. In response to such needs and goals, the focus is on real-time CORBA scheduling services with load balancing strategies. With the end-to-end scheduling service model, a scheduling service framework based on load balancing is designed, which is described in formal language and the load balancing strategy and global scheduling algorithm are analyzed theoretically. It solves the defect of node independent scheduling in real-time CORBA specification, and makes the scheduling service of the system have the global optimization, laying a solid theoretical foundation for putting the system into practical use.