交互式模糊物理规划在概念设计方案多目标决策中的应用

针对传统方法在方案决策时需给出无实际物理意义各目标权重的局限,将物理规划的方法引入到概念方案的多目标决策中,针对概念方案指标值存在预测性和模糊性的特点,建立了基于模糊物理规划的方案决策模型.决策者在决策时无须给出各设计目标具体权重,只需设定各目标满意区间的边界值,即可通过偏好函数和决策模型选出满足这一偏好的最优方案,从而将整个决策过程置于一个更加灵活自然的框架中,更充分的表达了决策者的主观偏好,更符合工程实际情况.此外,针对概念设计阶段偏好结构和决策结果的易变性,文中给出了交互决策的基本过程和方法,实现了概念方案动态交互式决策.

Application of Interactive Fuzzy Physical Programming in Multi-objective Decision Making for Concept Selection

To address the limitation that weights and ratings without physical meaning are required to be provided in traditional decision-making methods,physical programming is used in multi-objective decision making for concept selection and a fuzzy physical programming based decision-making model is proposed considering the fuzzy uncertainty of concept objective value.For decision-maker,there is no need to provide the detail weight information and only through specifying the boundary values of each preference range,a satisfactory concept can be selected according to the generated preference functions and decision-making model.This approach allows the decision-maker to express preference flexibly and concisely in a physically meaningful manner,which can reflect the actual state of conceptual design more nicely and improve the rationality of decision-making.On the basis of this model,this paper also discusses the process and method of dynamic interactive decision making aiming at the changeability of preference structure in conceptual design stage.Finally a case is given to demonstrate the feasibility and effectiveness of the proposed method.