基于支持向量机算法的数控机床切削力误差实时补偿  

Real-Time Compensation of Cutting Force-Induced Errors on NC Turning Center Based on Support Vector Machine

作　　者：魏丽霞 李向丽[2] 张勇[3] WEI Lixia LIXiang li ZHANG Yong(C o lle g e o f S c ie n c e , C h in a U n iv e rs ity o f P e tr o le u m , Q in g d a o 266555, C h in a F a c u lty o f M e c h a n ic a l a n d E le c tro n ic E n g in e e r in g , J ia n g s u C o lle g e o f In fo rm a tio n T e c h n o lo g y , W u x i 214153,C h in a S c h o o l o f In fo rm a tio n E n g in e e rin g , In n e r M o n g o lia U n iv e rs ity o f S c ie n c e ＆ T e c h n o lo g y , B a o to u 014010, C h in a)

机构地区：[1]中国石油大学(华东)理学院,山东青岛266555 [2]江苏信息职业技术学院机电工程系,江苏无锡214153 [3]内蒙古科技大学信息工程学院,内蒙古包头014010

出　　处：《机械制造与自动化》2016年第5期58-60,86,共4页Machine Building & Automation

摘　　要：数控机床误差对制造加工精度的影响较大。在已知主轴伺服电机电流信号与切削力之间关系的基础上,运用支持向量机网络建立切削力误差模型。以此为基础,进行数控机床的切削力误差实时补偿,解决了切削力误差造成数控机床加工误差的问题。并通过加工实例对此补偿系统进行了有力验证。结果表明:所建立的切削力误差模型避免了传统切削力监测花费大、调试难及可靠性低等问题,且有较强的鲁棒性和较高的精度,切削力误差实时补偿系统使用方便且效果显著。The effect on assurable machining accuracy is caused by error of NC machinge tool. In order to reduce its error, the cuttingforce error model is constructed using support vector machine,based on the relationship between cutting forced-induced errorsand the spindle motor current . The cutting force-induced error compensation system is developed based on this model and verifiedthrough the actual machining experiment. The new modeling is used to avoid many problems,such as high cost, difficulty in the debuggingprocess and low reliability. It has the better effect on its compensation and is of more better robustness. Experimental resultsshow that it is easier to implement its compensation with perfect effect.

关 键 词：支持向量机 切削力误差 误差模型 实时补偿 

分 类 号：TH161[机械工程—机械制造及自动化]