基于Petri网的多剪多冲加工工艺建模及算法研究
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摘要
针对目前硅钢片数控横剪线存在的问题,以实现多剪多冲、系统柔性化,以及降低人员编程量和劳动强度等为目的,对多剪多冲数控横剪线进行研究。分析横剪线的机械结构与工艺流程,给出多剪多冲的定义;以时间Petri网为理论基础建立TPN模型,分析其内部存在的并发、冲突等关系;建立以加工工步最少、送料轴移动总距离最少,以及退料最少为优化目标的数学模型,利用横剪线的并行性,安排多工步加工的有序n元组;给出系统总体算法流程,重点对计算和优化部分进行算法设计;最后通过实例验证多剪多冲数控横剪线加工模型的可行性和有效性。
Aiming at the problems existing in the CNC transverse shear line of silicon steel sheet,a multi-shear and multi-punch CNC transverse shear line research is carried out for the purpose of realizing multi-shear and multi-punching,flexible system,reducing programming quantity and labor intensity. The mechanical structure and process flow of transverse shear line are analyzed,and the definition of multi-shear and multi-punch is given. The TPN model is established based on the time Petri net,and the relationship of concurrency and conflict is analyzed. The mathematical model with least process step,minimum total moving distance of feed axis and minimum return material is set up,the ordered n-tuple of the multi-step machining is arranged by the parallelism of the transverse shear line. The overall algorithm flow is given,with emphasis on the design and calculation of the algorithm. Finally,an example is given to demonstrate the feasibility and effectiveness of the multi-shear and multi-punch CNC transverse shear line machining model.
Aiming at the problems existing in the CNC transverse shear line of silicon steel sheet,a multi-shear and multi-punch CNC transverse shear line research is carried out for the purpose of realizing multi-shear and multi-punching,flexible system,reducing programming quantity and labor intensity. The mechanical structure and process flow of transverse shear line are analyzed,and the definition of multi-shear and multi-punch is given. The TPN model is established based on the time Petri net,and the relationship of concurrency and conflict is analyzed. The mathematical model with least process step,minimum total moving distance of feed axis and minimum return material is set up,the ordered n-tuple of the multi-step machining is arranged by the parallelism of the transverse shear line. The overall algorithm flow is given,with emphasis on the design and calculation of the algorithm. Finally,an example is given to demonstrate the feasibility and effectiveness of the multi-shear and multi-punch CNC transverse shear line machining model.
引文
[1]张朋.HJ-400/2500A型变压器铁芯横剪线关键控制技术的设计与实现[D].济南:山东大学,2014.
[2]郭健,林鹤云,徐子宏,等.变压器阶梯接缝铁心的损耗计算[J].东南大学学报(自然科学版),2007(1):60-63.
[3]NIHAT N,NAPIERALSKA-JUSZCZAK E,LECOINTE J P,et al.Computational and experimental verification of the equivalent permeability of the step-lap joints of transformer cores IET.International Conference on Conputation in Electromagnetics[C].Brighton,UK:IET,2008:38-39.
[4]江耀华.我国电力变压器技术和市场发展趋势简要分析[J].装备机械,2013(1):2-6.
[5]李菱,赵智鹏,李纯.基于Wincc的横剪生产线控制软件设计[J].微计算机信息,2007,23(4):15-16.
[6]赵涛.基于PLC的进口400型变压器铁芯横剪线控制系统改造[D].银川:宁夏大学,2013.
[7]赵丹.柔性制造系统刀具流动态调度研究[D].哈尔滨:哈尔滨工程大学,2011.
[8]蔡红健.开放式数控木工加工中心数控系统的开发研究[D].南京:南京林业大学,2008.
[9]赵涛,虎恩典,丁晓军.基于模糊控制的铁芯横剪线控制系统改造[J].制造技术与机床,2013(8):130-133.
[10]张洪梅.时间Petri网及其在仿真系统概念建模中的应用[D].哈尔滨:哈尔滨工业大学,2014.
[11]吴哲辉.Petri网导论[M].北京:机械工业出版社,2006.
[12]曹双进,董荣胜,古天龙,等.基于Petri网的分布式实时调度模型研究[J].计算机工程与应用,2003(30):75-78.
[13]徐波涛,寇益.基于Petri网的制造单元建模与仿真[J].军民两用技术与产品,2009(10):46-48.
[14]PAN L,CHEN S,ZHENG H.A Method for Computing Global Delays of Time Petri Nets.2010 3rd International Conference on Computer Science and Information Technology[C].[S.l.]:[s.n.],2010.
[15]BONHOMME P.Estimation of p-time labeled petri nets with unobservable transitions.Proceedings of the 2014IEEE Emerging Technology and Factory Automation(ETFA)[C].Barcelona,Spain:IEEE,2014:1-8.
[2]郭健,林鹤云,徐子宏,等.变压器阶梯接缝铁心的损耗计算[J].东南大学学报(自然科学版),2007(1):60-63.
[3]NIHAT N,NAPIERALSKA-JUSZCZAK E,LECOINTE J P,et al.Computational and experimental verification of the equivalent permeability of the step-lap joints of transformer cores IET.International Conference on Conputation in Electromagnetics[C].Brighton,UK:IET,2008:38-39.
[4]江耀华.我国电力变压器技术和市场发展趋势简要分析[J].装备机械,2013(1):2-6.
[5]李菱,赵智鹏,李纯.基于Wincc的横剪生产线控制软件设计[J].微计算机信息,2007,23(4):15-16.
[6]赵涛.基于PLC的进口400型变压器铁芯横剪线控制系统改造[D].银川:宁夏大学,2013.
[7]赵丹.柔性制造系统刀具流动态调度研究[D].哈尔滨:哈尔滨工程大学,2011.
[8]蔡红健.开放式数控木工加工中心数控系统的开发研究[D].南京:南京林业大学,2008.
[9]赵涛,虎恩典,丁晓军.基于模糊控制的铁芯横剪线控制系统改造[J].制造技术与机床,2013(8):130-133.
[10]张洪梅.时间Petri网及其在仿真系统概念建模中的应用[D].哈尔滨:哈尔滨工业大学,2014.
[11]吴哲辉.Petri网导论[M].北京:机械工业出版社,2006.
[12]曹双进,董荣胜,古天龙,等.基于Petri网的分布式实时调度模型研究[J].计算机工程与应用,2003(30):75-78.
[13]徐波涛,寇益.基于Petri网的制造单元建模与仿真[J].军民两用技术与产品,2009(10):46-48.
[14]PAN L,CHEN S,ZHENG H.A Method for Computing Global Delays of Time Petri Nets.2010 3rd International Conference on Computer Science and Information Technology[C].[S.l.]:[s.n.],2010.
[15]BONHOMME P.Estimation of p-time labeled petri nets with unobservable transitions.Proceedings of the 2014IEEE Emerging Technology and Factory Automation(ETFA)[C].Barcelona,Spain:IEEE,2014:1-8.