【摘要】 为解决网络控制系统因并行而导致的时延增大问题,协调并行控制效率与信息通信负荷,建立了网络控制系统并行化体系结构、质量衡量标准和服务质量管理模型.提出了基于控制器闲置时间的最大闲置时间最先(MVTF)的消息调度策略.以基于CAN总线的并行网络控制系统服务质量管理为例,建立了服务质量管理仿真模型,并将上述调度策略与单调速率调度策略进行了仿真比较.仿真结果表明,采用MVTF调度策略进行并行系统的服务质量管理能够有效提高网络控制系统的控制性能及网络利用率.更多还原

【Abstract】 In order to deal with the increased delays and to balance the network load and the control performance, a Quality-of-Service (QoS) management framework with QoS standards for the pipeline-parallel network control system was presented. A scheduling strategy based on most vacancy time first (MVTF) was developed. As an example, a QoS management framework was built for a CAN bus control system with a comparison to the rate monotonic scheduling strategy. The simulation results show that the control performance and the network utilization of the parallel network control system are effectively improved by using the proposed QoS management.更多还原