基于实例推理的挖掘机工作装置实例库研究与开发

Development and Research of Instance Library of Excavator Working Device Based on CBR

基于数据库技术,建立了挖掘机工作装置的EER数据模型,根据EER数据模型,并运用面向对象的实例表达方法,设计了整个工作装置部分的实例库,同时采用CBR技术对产品实例库的检索和修正提出了相应的策略,通过实例对象间的相似度计算,检索出相似实例,通过对检索出来的相似零件进行相似度修正,以特征值确定实例相似度范围,从而确定实例修正方法。最后利用VC语言开发了挖掘机工作装置实例库系统,并应用于生产实际。

The excavator working device EER data model was built based on the database technology. The whole part of working device instance library was designed by using of the object-oriented expression method based on EER data model,at the same time using Case Based Reasoning( CBR) technology to search the product case data and put forward the corresponding strategy of correction. Through the similarity calculation between instance objects searching similar instance,and correct the similarity for the similar parts,with characteristic values determining the scope of the case similarity,the instance correction method was determined. Finally,VC language is used to develop the excavator working device instance library system,which is applied to practical production.