A GRADIENT-SIMULATED ANNEALING ALGORITHM OF PRE-LOCATION-BASED BEST FITTING OF BLANK TO COMPLEX SURFACES MACHINING

• 来源期刊: 计算机辅助绘图.设计与制造(英文版)
• 学科: 工学
• 年，卷（期）: 2004,（2）
• 页码范围: 57-63
• 页数: 7页
• 分类号: TG506
• 语种: 中文

摘要

The algorithm is divided into two steps. The first step pre-locates the blank by aligning its centre of gravity and approximate normal vector with those of destination surfaces, with largest overlap of projections of two objects on a plane perpendicular to the normal vector. The second step is optimizing an objective function by means of gradient-simulated annealing algorithm to get the best matching of a set of distributed points on the blank and destination surfaces. An example for machining hydroelectric turbine blades is given to verify the effectiveness of algorithm.