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Development of design methodology for upgradable products based on function-behavior-state modeling

机译：基于功能行为状态建模的可升级产品设计方法开发

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Extending product life is one of the hopeful approaches to reduce the environmental issue, which is one of the most critical issues of today. However, many products are thrown away because of obsolescence of functions and their performance. Therefore, we should design products to be functionally upgradable. Moreover, such upgradable products may create business chances at later stages of product life cycles. The objective of this research is to propose a design methodology for upgradability. This methodology employs a functional modeling scheme, FBS modeling, because upgrade design is a distinctive application of functional design that aims at maximizing functional flexibility with minimal structural changes after the product is manufactured. Here, the functional flexibility refers to an ability of a product to adapt its functions to changes of user needs. This paper proposes and models design processes and design operations in the upgrade design. Especially, the methodology supports finding out candidates of modifications of the function structure and configuration of a platform, which is common structure of a product among several generations, and upgrade modules. One of its central issues of upgrade design is treatment of future uncertainty. For this purpose, we propose two design strategies: delayed selection of components, and expanding and shrinking platform. A prototype system and a case study of upgrade design for a vacuum cleaner are also illustrated. The case study indicates that the system succeeded in systematically supporting a designer to execute the design methodology. Regarding the functional design, as an extension of FBS modeling, this paper proposes a method to relate abstract entity concepts in FBS modeling to concrete components through a quantitative behavior model and range calculation, in addition to deployment of FBS modeling for the design methodology.
机译：延长产品寿命是减少环境问题的有希望的方法之一，这是当今最关键的问题之一。但是，由于功能和性能的过时，许多产品被丢弃了。因此，我们应设计功能可升级的产品。此外，此类可升级产品可能会在产品生命周期的后期阶段创造商机。这项研究的目的是提出一种可升级性的设计方法。此方法采用功能建模方案FBS建模，因为升级设计是功能设计的独特应用程序，旨在在产品制造后以最小的结构更改最大化功能灵活性。在此，功能灵活性是指产品根据用户需求的变化而使其功能适应的能力。本文提出并建模了升级设计中的设计过程和设计操作。特别地，该方法支持找出对功能结构和平台的配置进行修改的候选者，该平台是几代产品中的通用结构，以及升级模块。升级设计的中心问题之一是对未来不确定性的处理。为此，我们提出了两种设计策略：延迟选择组件以及扩展和缩小平台。还说明了真空吸尘器的原型系统和升级设计的案例研究。案例研究表明，该系统成功地系统地支持了设计师以执行设计方法。关于功能设计，作为FBS建模的扩展，本文提出了一种通过定量行为模型和范围计算将FBS建模中的抽象实体概念与具体组件相关联的方法，以及将FBS建模用于设计方法的方法。

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