基于独立公理和可变灵敏度的稳健设计方法研究  

Research on Robust Design Method Based on Independence Axiom and Variable Sensitivity

作　　者：龚燕萍[1] 黄志刚[2] 

机构地区：[1]华东交通大学理工学院机电分院,江西南昌330100 [2]华东交通大学载运工具与装备教育部重点实验室,江西南昌330013

出　　处：《科技广场》2015年第1期40-44,共5页Science Mosaic

摘　　要：公理设计与稳健设计的结合能系统有效地提升系统设计质量。本文基于独立公理分析了功能稳健性与耦合度之间的关系。利用可变灵敏度方法建立非线性系统的线性结构模型,利用变量灵敏度矩阵来分析非线性项和模型不确定性的影响。采用敏感性指数反映功能需求对设计参数变化的敏感程度。非线性系统稳健设计的多目标通过相容决策支持问题法得到均衡处理,以实现功能需求对参数和模型变化的稳健性。算例分析表明提出的设计方法有效。The integration of axiomatic design and robust design can systematically and effectively improve the quality of system design. This paper analyzes the relationship between robustness and coupling degree based on independence axiom theory. We establish the linear structure model of nonlinear system by using the variable sensitivity approach, analyze the effects of nonlinear terms and model uncertainty with the variable sensitivity matrix,and measure the sensitivity of functional requirements to the variation of design parameters by adopting sensitivity index. The robust design multiple objectives of nonlinear system are traded off in the compromise decision support problem, so as to realize the robustness of function requirements to the variation of parameters and model. The proposed design method is effective.

关 键 词：独立公理 耦合度 稳健设计 非线性系统 灵敏度分析 

分 类 号：TH122[机械工程—机械设计及理论]