摘要
在对高精密元件进行残缺修补之前,需要进行虚拟仿真,提前虚拟判断修补后的结果。零件残缺部位的再生过程需要根据残缺根源部位的特征进行方向和角度的预测,但是由于高精密元件残缺部位残留信息过少,造成现存特征无法取得足够虚拟再生信息,只能根据简单的向上、角度旋转等估计特征完成虚拟再生高精度元器件仿真,造成虚拟效果不好。提出了一种基于虚拟热场优化再生的零件残缺修补仿真方法。利用粒子滤波算法对热场数据进行分析,根据短距离缺失在热场上反映出的方向特征作为缺损虚拟修补再生仿真的数据基础,运用方向和角度的热场估计,建立三维虚拟重构模型,实现精密元器件缺损虚拟修补。实验结果表明,利用改进算法进行精密元器件缺损虚拟修补,可以有效提高修补的精确度。
Prior to repair the incomplete high precision components, virtual simulation is needed to make virtual determination of the results after repair in advance. The regeneration process of crippled parts requires the forecast of the direction and angle according to the features of crippled root, but because the residual information of high precision components crippled parts is too small, existing characteristics cannot be used to obtain sufficient virtual regeneration information. This study proposed a repair simulation method of crippled parts based on virtual thermal field optimization reproduction. Firstly, the particle filter algorithm was employed to analyze the data on the thermal field, the direction characteristics of missing short distance reflected in thermal field were regarded as the data base of defect repair regeneration virtual simulation, and then the direction and angle of the thermal field were estimated to establish a three - dimensional virtual reconstruction model, and ultimately achieve defect virtual patching of precision components. Experimental results show that the proposed algorithm for virtual defect repair of precision components can effectively improve the accuracy of repair.
出处
《计算机仿真》
CSCD
北大核心
2014年第6期390-393,405,共5页
Computer Simulation
关键词
精密元器件
缺损修补
再生技术
边缘像素提取
Precision components
Imperfect repair
Regeneration technologies
Edge pixels extraction
