基于层次结构模型的LLP控制算法设计

LLP Design Based on Hiberarchy Model

层次结构模型是混杂系统理论中一种重要的模型,主要是因为它能够更直观地反应混杂系统的本质,以及控制变量、离散事件状态变量和连续状态变量之间的关系和演化过程。针对具有混杂特性的双罐系统,建立了其对应的层次结构模型,并设计了合于受控输入是有限控制集的Limited Lookahead Policy(LLP)控制算法,并给出了稳定性的条件。分别在正常情况和故障情况下进行了3个仿真实验,实验结果验证了所建立的模型和算法的有效性和鲁棒性。

Hiberarchy model is an important model of hybrid system theory,because it can reflect clearly the essence of hybrid system,as well as the relationship and evolvement process among control variables,discrete event state variables and continuous state variables.A two-pot system with hybrid characteristic is modeled as a hiberarchy model,and limited lookahead policy(LLP) is designed,then the stability conditions are also given.Finally,three simulation experiments are conducted in normal and faulty conditions respectively,and the simulation results show the validity and robustness of the model and the proposed algorithm.