摘要
机械产品的装配序列直接影响到产品质量和成本,装配序列规划是产品设计的重要内容.为快速实现产品装配序列规划,根据零部件间的装配优先关系,提出了一种改进的装配序列规划方法,并基于蚁群算法予以实现.该方法充分考虑装配过程中的几何约束关系,并引入稳定性、装配经验等因素的影响,以稳定性、装配经验、装配工具和方向的改变次数为影响因子构建优化目标评价体系,使所得解更具有实际指导意义.在求解过程中,根据几何约束关系运用动态候选集合策略限制蚁群的搜索空间,提高了搜索效率;考虑稳定性因素的影响改进了蚁群的状态转移规则,同时引入局部-全局信息素更新规则,保证了蚁群获得最优或近优解.最后,通过实例研究验证了算法的可行性和高效性.
Assembly sequence affects the quality and cost of mechanical products; and it is important in product design. In order to obtain the assembly sequence rapidly, precedence relations among components are introduced; and an improved approach for assembly sequence planning based on ant colony algorithm is proposed. Considering the geometric constraint, components~ stability and assembling experience in assembly process, the approach can be more practical than before. Dynamical candidates set strategy based on precedence relations is adopted to constrain the searching space of assembly sequence; state transition rule is improved based on assembly stability; and local-global updating rules of pheromone are introduced to ensure obtaining the optimal or near-optimal solutions. Finally, the feasibility and calculation efficiency of the proposed approach are verified by a case study.
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
2013年第2期246-251,共6页
Engineering Journal of Wuhan University
基金
国家自然科学基金项目(编号:50875190)
武汉科技大学绿色制造与节能减排科技研究中心开放基金项目(编号:B1017)
武汉科技大学校青年基金项目
关键词
装配序列规划
蚁群算法
稳定性
优先关系
信息素
assembly sequence planning
ant colony algorithm
precedence relation
stability
pheromone
