基于多元决策模型的结晶器协调控制方案

Mould Coordination Control Scheme Based on Multivariate Decision-Making Model

针对在特定物理环境、经济环境和工程环境下,如何选择最佳的结晶器协调控制方案的问题,提出一种新的控制方案分析方法:基于多元决策模型的模糊分析方法。根据连铸工业过程对结晶器控制系统的要求,选取鲁棒性、超调量、能量消耗率、安全性、安装成本、复杂性等6个指标建立综合评估体系,采用判断矩阵法确定多元决策权重向量,进而构造出控制系统评价优选的多元决策模型。基于该模型,在多元约束条件下对4种典型的结晶器协调控制方案及其仿真结果进行了模糊分析。分析结果对实际结晶器控制系统的设计有指导性意义。该方法可以推广到其他控制系统的方案评估中去。

A fuzzy analysis method based on muhivariate decision-making model is presented to select the optimum mould coordination control scheme under the given conditions of physics, economy and engineering. The indices of robustness, overshoot, energy consumption, security, installation cost and complexity are selected to construct the optimization evaluation system. The estimation-matrix method is used to calculate the weight vector, and the multivariate decision-making model is established. Based on the model, four typical mould coordination control schemes and relevant simulation results are analyzed. The fuzzy analysis result shows that the method is effective to the optimization design of mould control scheme in engineering. The method can be implemented for other control analysis.