摘要
针对定制产品变型设计中设计参数不完全的问题,提出了基于已有产品数据资源进行设计参数估计的变型设计方法。在该方法中,每一个产品的设计方案对应一组完全的设计参数,并记为一个向量,定制产品中未知的设计参数可以根据已知设计参数和已有的产品数据资源,通过极大似然估计得到。通过运用期望最大化算法,简化了设计参数极大似然估计的运算,给出了运用期望最大化算法实现未知设计参数推断的迭代过程。设计了变型设计系统的框架结构,给出了变型设计的过程。最后,用一个实例对该方法进行了验证。
Aiming at incomplete design parameters data problem in variant design of customized product, a variant design method of estimating unknown design parameters based on existing product data resources was presented. In this method, each product design scheme was corresponding to a set of complete design parameters, which was recorded as a vector. The unknown design parameters of customized product could be obtained through maximum likelihood estimation by using the known design parameters of customized product and existing product data resources. Expectation step, Maximization step （EM） algorithm was employed to simplify the calculation process of maximum likelihood estimation for design parameters, and an iterative process using EM algorithm to deduce unknown design parameters was presented as well. Then the framework of variant design system was designed, and variant design process based on this system was provided as well. Finally, an application example was given to verify the feasibility of this method.
出处
《计算机集成制造系统》
EI
CSCD
北大核心
2007年第2期217-223,共7页
Computer Integrated Manufacturing Systems
基金
浙江省科技攻关计划重点科研资助项目(2006C11234)
国家863/CIMS主题资助项目(2006AA04Z116)
高等学校博士学科点专项科研基金资助项目(20060335134)。~~
关键词
大规模定制
极大似然估计
期望最大化算法
变型设计
mass customization
maximum likelihood estimation
expectation step, maximization step algorithm
variant design
