具有时变通信受限非线性信息物理系统的网络化预测控制

Networked predictive control of nonlinear cyber physical systems with time-varying communication constraints

中文关键词  网络化预测控制  时变通信受限  非线性系统  信息物理系统

英文关键词  networked predictive control  time-varying communication constraints  nonlinear systems  cyber physical systems

中文摘要

      针对具有时变通信受限的一类非线性信息物理系统, 本文采用网络化预测控制策略, 对于时变通信时延和 数据丢失, 不是使用常规的被动方式抑制, 而是进行主动补偿. 为了使补偿时变通信受限的方式简单、主动和通用, 提出了一种新颖的网络化非线性预测控制方法. 所设计的网络化非线性预测控制器能达到具有与无网络的本地闭 环控制系统完全相同的期望控制性能. 同时, 经系统稳定性分析, 给出了闭环网络化非线性预测控制系统稳定的充 要条件. 数值算例说明了所提网络化非线性预测控制器设计方法对信息物理系统中时变通信延时实现了完全补偿.

英文摘要

      For a class of nonlinear cyber physical systems with time-varying communication constraints, the networked predictive control strategy is adopted in this paper. It does not use the conventional passive suppression method but employs the active compensation method to overcome the time-varying communication delay and data loss. To make the method of compensating for time-varying communication constraints simple, active and universal, a novel networked nonlinear predictive control method is proposed. The designed networked nonlinear predictive controller can achieve the same expected control performance as a local closed-loop control system without networks. At the same time, the necessary and sufficient conditions for the stability of the closed-loop networked nonlinear predictive control systems are derived. Numerical examples show that the proposed networked nonlinear predictive control method can fully compensate for the time-varying communication delays in cyber physical systems.