基于多Agent的机身外形优化模型

提出了一个基于多Agent系统的机身外形优化模型,并将其用于飞机概念设计阶段的多学科优化中。该模型继承了多Agent系统的自主、协作等优点,并且结合了机身段和机身剖面的建模方法。提出并定义了不同类型的Agent及其功能,对各类Agent选用了不同的协调方式及协调规则。作为对模型的验证,针对一个战斗机方案多学科优化设计的算例,给出了机身外形中各Agent的协调过程。优化结果表明这一模型在优化过程中能有效地减少机身的优化变量,缩短计算时间。同时,由于各Agent之间的自主协调避免了复杂机身外形在优化中产生扭曲,从而增加了可行解的数量。

Fuselage Shape Optimization Model Based on Multi-Agent

The fuselage shape optimization model is proposed based on a multi-agent system(MAS) and applied to multidiscipline design optimization(MDO) for the aircraft conceptual design.The model has advantages of autonomy and cooperativity from the MAS.The modeling method incorporates the fuselage segment into the section.Different types of agents and their functions are defined,and different rules and modes of negotiate are selected for each agent type. Aimed at the model,a MDO example of a fighter aircraft concept is validated,and the negotiate process of each agent in the fuselage shape is given.The optimization results show that in the optimizing process,the model can effectively decrease variable fuselage number and shorten the computational time.Moreover,because autonomous negotiation between agents can avoid distorting of complex shape during optimization,the number of feasible solutions is increased.