基于粗糙模糊数与耦合分析的产品工艺参数方案绿色优选

Product process scheme green selection based on rough fuzzy number and coupling analysis

针对绿色制造的工艺参数方案优选问题,提出基于粗糙模糊数、占优层次分析法、关联耦合分析与Choquet积分集成的多属性决策新方法。为有效处理性能指标权重评价数据的模糊性和不确定性信息,以区间形式的粗糙模糊数表征性能指标的相对重要度并构造出粗糙模糊成对比较矩阵,进而通过强度Pareto进化算法求解获得性能指标的权重。考虑到性能指标之间交互影响的复杂性对工艺绿色性评价的影响,利用敏感性分析和拉格朗日插值拟合工具确定性能指标之间的耦合度数值。引入Choquet积分算子对工艺参数方案的绿色度进行全面计算,并筛选出绿色度最佳的工艺参数。以风机端盖的注塑加工参数评价为例,验证了该方法的可行性与有效性。

Orienting to problems about product process scheme selection under green manufacturing circumstances,a novel integrated multi-attribute decision method including rough fuzzy number,domination analytical hierarchy process,Choquet integral and correlative coupling analysis technology was proposed.To deal with the fuzzy,uncertainty evaluation information of performance targets'weight data effectively,the rough fuzzy number in form of interval was adopted to characterize relative importance degree of performance target,and then the rough fuzzy pairwise comparation matrix was constructed.The pairwise comparation matrix was optimized and solved by strength Pareto evolutionary algorithm to get importance degree weight of performance targets.There were much complicated interrelated influences between performance targets,and those influences affected green process scheme evaluation.Hence sensitivity analysis and Lagrange interpolation fitting tool were employed to determine coupling degree.Choquet integral was introduced to aggregate measured value of performance targets and importance degree of performance targets,so greenness degree of process scheme evaluation could be calculated thoroughly,and the greenest process scheme was selected.A case study of green injection moulding process scheme evaluation for a fan shell was offered to illustrate the practicability and validation of the proposed method.