摘要
针对网络控制系统的带宽约束问题,提出一种基于误差阈值的确定性通信调度策略来控制网络节点数据的发送,并将其应用于基于模型的网络控制系统(MB-NCS)中,建立了具有通信调度功能的MB-NCS模型.进一步对该系统的稳定性进行了分析,给出了系统中被控对象状态的稳定域范围.仿真算例表明,引入了通信调度策略后,在获得较好系统性能的情况下,数据发送次数明显减少,有效地减轻了系统对网络的依赖.
Due to the bandwidth constraints in the networked control system, a deterministic communication scheduling strategy based on error threshold is proposed to control data transmission of network nodes, and the strategy is applied to the MB-NCS （model based networked control system）. Then, the model of MB-NCS with communication scheduling function is constructed. Furthermore, the stability of the system is analyzed and the stability region of the controlled plant states is provided. Simulation result shows that the introduced communication scheduling strategy obtains good system performance and reduces the data transmission times obviously, which lightens system dependence on network effectively.
出处
《信息与控制》
CSCD
北大核心
2009年第5期580-584,590,共6页
Information and Control
关键词
MB-NCS
误差阈值
确定性通信调度
MB-NCS
error threshold
deterministic communication scheduling
