摘要
针对白车身多工位装配偏差源耦合复杂,诊断困难的问题,提出一种新的多工位装配偏差源诊断方法。基于多工位装配偏差流传递的状态空间模型,将连续的装配过程以检测站为节点分解成不同的装配模块;引入"两种质量诊断理论",通过对比分析装配模块的计算机仿真装配偏差和实际装配偏差,获取装配模块"分质量",将偏差源定位到具体模块,降低状态空间模型状态变量维数,实现偏差源的快速诊断。最后通过实例验证了方法的有效性。
The assembly of body-in-white is a complex process in which different sources of deviation couple with each other so the diagnosis of the real source becomes harsh. In this study, a new diagnosis method to resolve this problem is proposed. Based on state space model for the propagation of deviation in multi-stage assembly process, we partition the continuous process is partitioned into different assembly modules according to the location of measuring station. Then ＂ Diagnosis theory with two kinds of quality＂ is introduced into the procedure to derive the ＂ partial quality＂ of the modules through comparison between simulated deviation and actual deviation. So the source of deviation is identified in these modules. This approach reduces the dimension of state space model and thus accelerates the diagnosis procedure. Experimental results show the effectiveness of this method.
出处
《机械设计与研究》
CSCD
北大核心
2014年第2期104-107,共4页
Machine Design And Research
关键词
白车身
多工位装配
诊断
状态空间
两种质量
body-in-white
multi-stage assembly
diagnosis
state space model
two kinds of quality
