基于输出反馈的网络控制系统随机通信逻辑设计

Design of Stochastic Communication Logic for Networked Control Systems Based on Output Feedback

针对具有丢包的网络控制系统被控对象状态无法直接测量的情况,设计了状态观测器,给出了一种基于状态依赖泊松过程决定的随机通信逻辑,应用于一般结构的输出反馈网络控制系统中.提出了具有随机通信逻辑的网络控制系统的结构,建立了网络控制系统模型,利用随机点过程理论分析了系统的稳定性,进一步证明了系统的均方渐近稳定性.仿真算例表明加入通信逻辑后,在保证系统稳定的情况下,数据发送次数明显减少,有效地减轻了网络负担.

The plant state observer was designed and a kind of stochastic communication logic based on states of systems for networked control systems with data dropout was proposed when the plant states cannot be measured directly. It can be applied in common structure of states-feedback networked control systems. The structm＇e of networked control system with stochastic communication logic was introduced, and its model was built up. Stochastic point process was applied to analyzing the stability of systems. Furthermore, the mean square asymptotically stability of systems was proved. Finally, a simulation example shows that under the system stability condition, the introduced communication logic reduces the data transmission times obviously, which lightens the network burden effectively.