面向产品低碳设计冲突协调的可拓知识演化方法

Design for Low Carbon (DFLC) across the whole product life-cycle involves lots of conflicts between design objectives, which raises the need of researching conflict resolution. This project is motivated by this need and is aimed at (1) studying the knowledge acquisition for the factors which influence carbon emission and exist in design objectives space, design tasks space and design conditions space; (2) building an evolution model for extension knowledge based on the product life-cycle carbon footprint, cost, and performance mapping; (3) and exploiting the mechanism for mapping requirement-function-behaviour-environment mapping in DFLC. Specifically,the Extension Set Theory (EST) will be used to model the uncertainty, complexity, and evolution of the knowledge in DFLC, and the rules for both qualitative and quantatitive changes in conflict resolution will be revealed through constructing an extension knowledge classifier, to realise the extension of multiple-scale knowledge in DFLC across the whole product life-cycle. In addition, the systematic approach to the evluation of low-carbon design knowledge will be constructed to (1) identify the reasoning of, and the rules for, knowledge evalution in DFLC; (2) develop the methods for the transformation of design spaces, the transformation rules for the factors in carbon emission, as well as the methods for the propagation of carbon footprint effects; (3) construct the system for evaluating the overall effects of conflict resolution in DFLC, as well as the system for evaluating design objectives' capacity of co-existing and being compatable to each other. The screw compressor with low energy-efficiency will be studied to develop a prototypical conflict resolution system for DFLC, as well as to provide theoretical methods and technical support for conflict resolution problems in DFLC.

围绕产品生命周期低碳设计冲突协调的关键科学问题，研究设计目标域、设计任务域和设计条件域碳排放多因素关联知识获取，构建产品生命周期碳足迹、成本、性能匹配的可拓知识演化模型，阐明低碳设计需求-功能-行为-结构-环境的跨域映射机理。采用可拓集描述低碳设计知识的不确定性、复杂性和演变性，通过构建可拓知识分类器，揭示低碳设计冲突问题的正、负量变与质变规律，实现产品生命周期低碳设计多尺度知识的拓展。创建可拓知识派生体系，挖掘低碳设计知识演化推理与变换规律，提出设计域变换、碳排放关联规则变换以及碳足迹效能传导方法，揭示多设计目标冲突、不相容和对立设计问题的拓展变换与复杂传导规律，构建产品低碳设计冲突协调的综合效能评价体系，开展低碳设计的相容度与共存度综合评价。以高能耗的大型螺杆空压机为对象，开发以低碳设计冲突问题为导向的实验验证系统，为低碳设计问题的矛盾化处理和解决提供理论方法和技术支持。

针对产品低碳设计过程中现有矛盾表达、处理方法无法描述矛盾转化从而解决问题的辩证逻辑关系的不足；现有设计过程模型集成度低、演化能有有限的不足；现有冲突协调方法在求解低碳设计全生命周期多因素耦合设计矛盾的不足；现有评价方法对设计方案相容度和共存度评价的不足，本项目开展面向产品低碳设计冲突协调的可拓知识演化方法研究，提出了若干新方法、新思路。.提出了低碳设计多因素关联建模技术，分析全生命周期碳足迹、成本和性能的关联关系，通过改进作业成本法建立碳足迹和成本的量化模型，通过性能网状图建立性能属性的传导、转化关系，应用基元理论，构建低碳设计可拓知识模型，动态描述设计矛盾的演化规则；建立基于多维关联函数的相似实例检索方法，构建基元可拓集，对低碳设计进行静态、动态划分，构建可拓分类器，揭示实例量变、质变的演变规律；建立设计冲突问题模型，结合可拓学和TRIZ方法构建基于物理矛盾的不相容问题策略生成方法和基于技术矛盾的对立问题策略生成方法；建立基于关联度的设计方法综合能效评价体系，评估各设计特征的相容度和共存度；在理论研究基础上，利用VC++6.0、Solidworks 等软件平台，以高能耗螺杆空气压缩机、高层裁床装备为应用对象，开发低碳设计可拓知识演化试验平台，实现计算机辅助智能化设计。