第35卷第2期2023年6月河南工程学院学报(自然科学版)JOURNALOFHENANUNIVERSITYOFENGINEERING(NATURALSCIENCEEDITION)Vol.35,No.2Jun.2023基于动态惯性因子的五轴混联机床跟随误差实时溯因模型杨坤,毕忠梁,赵夫超(安庆职业技术学院机电工程学院,安徽安庆246003)摘要:为提高零件的加工效率及加工精度,准确分析五轴混联机床的轨迹误差,提出了基于动态惯性因子的五轴混联机床跟随误差实时溯因模型。建立五轴混联机床运动学模型,对位置进行逆解处理,运用机械传动装置的动力学微分方程,采用时间序列分析方法对机床演化特征进行分析,查找机床工作时的误差项,通过动态惯性因子优化SVM算法收敛能力,实现五轴混联机床跟随误差实时溯因。以某型号五轴混联机床为例,对时序信号进行去噪处理,分别分析了反向跃冲误差、直线度误差情况,实验结果表明所提模型的收敛性能较好,能跟踪到误差对象,噪声平滑效果较好,可跟踪到各个方向的误差。关键词:动态惯性因子;五轴混联机床;跟随误差;实时溯因;运动学;逆解中图分类号:TH161文献标志码:A文章编号:1674-330X(2023)02-0049-05Real-timeabductivemodeloffollowingerroroffive-axishybridmachinetoolbasedondynamicinertiafactorYANGKun,BIZhongliang,ZHAOFuchao(SchoolofMechanicalandElectricalEngineering,AnqingVocationalandTechnicalCollege,Anqing246003,China)Abstract:Inordertoimprovethemachiningefficiencyandaccuracyofparts,andaccuratelyanalyzethetrajectoryerroroffiveaxishybridmachinetool,areal-timetracingmodeloffiveaxishybridmachinetooltrackingerrorbasedondynamicinertiafactorisproposed.Thekinematicsmodelofthefive-axishybridmachinetoolisestablished,thepositioninversesolutionisprocessed,andthedynamicdifferentialequationofthemechanicaltransmissiondeviceisestablished.Thetimeseriesanalysismethodisusedtoanalyzetheevolutioncharacteristicsofthemachinetool,findtheerrortermwhenthemachinetoolisworking,andoptimizetheconvergenceabilityoftheSVMalgorithmthroughthedynamicinertiafactor,soastorealizethereal-timetracingofthefollowingerrorofthefive-axishybridmachinetool.Takingafive-axishybridmachinetoolasanexample,thispaperanalyzesthereverseimpulseerrorandstraightnesserroroftimeseriessignaldenoising.Theexperimentalresultsshowthattheproposedmodelhasgo...
