摘要：To increase the efficiency of the multidisciplinary optimization of aircraft, an aerodynamic approximation model is improved. based on the study of aerodynamic approximation model constructed by the scaling correction model, case-based reasoning technique is introduced to improve the approximation model for optimization. The aircraft case model is constructed by utilizing the plane parameters related to aerodynamic characteristics as attributes of cases, and the formula of case retrieving is improved. Finally, the aerodynamic approximation model for optimization is improved by reusing the correction factors of the most similar aircraft to the current one. The multidisciplinary optimization of a civil aircraft concept is carried out with the improved aerodynamic approximation model. The results demonstrate that the precision and the efficiency of the optimization can be improved by utilizing the improved aerodynamic approximation model with ease-based reasoning technique.

摘要：The framework for supporting conceptual design using case-based reasoning is studied. Adesign knowledge representation scheme is presented. It is capable of representing both generalized and specific design knowledge. A two-phase case retrieval strategy, called index elaboration, is described which supports both requirement-function transformation and function-feature transformation at conceptual design stage. We propose a prototype system and discuss in detail the realization of supporting conceptual design by CBR.

摘要：Taking a microwave product as an example, a system of integrated assembly structure design is presented. Getting design constraints from the upstream design section through product data management(PDM), the system generates the assembly scheme using the case? based method, then assigns the design requirements into each component of the assembly. The detail design for each component can be performed under these design constraints. In order to practise concurrent design, the system sends the final design result to the upstream section and downstream section through PDM to achieve information sharing and integration.

摘要：The increasing complexity and size of configuration knowledge bases requres the provisionof advanced methods supporting the development of the actual configuration process and design reuse.A new framework to find a feasible and practical product configuration method is presented in masscustomization. The basic idea of the appoach is to integrate case-based reasoning (CBR) with a con-straint satisfaction problem(CSP). The similarity measure between a crisp and range is also given,which is common in case retrieves. based on the configuration model, a product platform and customerneeds, case adaptation is carried out with the repair-based algorithm. Lastly, the methodology in theelevator configuration design domain is tested.

摘要：A new case representation is proposed. Design process is included in this case representation. The record of design process provides designers with rationale and assumptions behind design solutions. This kind of case representation not only provides better understanding of design solutions among designers, but also helps designers create new solutions in case modification stage.

摘要：目的为了提高设计师对以往知识与用户评价的服务设计管理,通过人工智能与管理学科的技术辅助实现群智能服务设计系统。方法使用CBR(case-based reasoning)与感性工学服务设计原理为前期研究框架,采用网络爬虫技术收集用户评语,使用人工智能知识图谱作为评价词汇数据库,实现对于服务设计知识的管理。通过TRIZ推理与原理整理作为设计创意输出依据主体。利用KANO研究方法确定用户需求并对输出设计功能进行实验验证。结果KANO实验结果较为理想,本研究方法具有一定的参考意义。结论知识图谱对于领域服务设计知识管理有可观的效果,通过一定可溯源推理方式让创意输出具有依据性,符合未来服务设计快速发展的需求。