基于因果逻辑关系的CPS分布式控因研究

针对多子系统间存在复杂因果逻辑关系的信息物理系统(cyber-physical systems,CPS),建立带有未知非线性项和不确定耦合项的CPS多因系统模型,并提出基于云控制技术的分布式控因方法.利用非线性解耦观测器对CPS多因系统进行动态前馈线性化,使得CPS多因系统分解为多个无耦合关联的CPS因系统.设计基于非线性解耦观测器的分布式模型预测控制器以及分布式优化算法,对解耦后的CPS因系统实现在线约束优化控制.最后,通过数值仿真表明所提出控制策略和优化算法的有效性.

Research on distributed control-cause for cyber-physical system based on cause-effect logic relations

For cyber-physical systems(CPS) with complex cause-effect logic relations between multiple subsystems, a CPS multi-cause system model with unknown nonlinear and uncertain coupling is established. A distributed control-cause method is also proposed based on cloud control technologies. A nonlinear decoupled observer is designed to achieve dynamic feedforward linearization for the CPS multi-cause system which is decomposed into multiple CPS cause systems without coupling. By the nonlinear decoupled observer, both a distributed model predictive controller and a distributed optimization algorithm are given to realize online constrained optimization control for the multiple CPS cause systems. Effectiveness of the proposed control strategy and optimization algorithm is verified by a numerical simulation.