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大连理工大学 机械工程学院,辽宁 大连 116085
[ "任同群(1980-),男,辽宁瓦房店人,博士,副教授,2002年、2005年、2008年于天津大学分别获得学士、硕士、博士学位,现为大连理工大学机械工程学院微纳米技术及系统研究所副所长,主要从事精密微小装配技术、精密测试技术及信号处理等方面的研究。E-mail: ren_tq@dlut.edu.cn" ]
[ "王晓东(1967-),男,黑龙江哈尔滨人,教授,博士研究生导师,1987年于南京航空学院获得学士学位,1992年于哈尔滨船舶工程学院获得硕士学位,1995年于哈尔滨工业大学获得博士学位,现任精密与特种加工教育部重点实验室(B类)副主任,主要从事精密微小装配技术、精密测试技术、精密仪器设计与制造等方面的研究。E-mail: xdwang@dlut.edu.cn" ]
收稿日期:2022-04-27,
修回日期:2022-05-19,
纸质出版日期:2023-01-25
移动端阅览
任同群,江海川,张建昆等.微小磁性零件装配设备自动标定及误差补偿[J].光学精密工程,2023,31(02):214-225.
REN Tongqun,JIANG Haichuan,ZHANG Jiankun,et al.Automatic calibration and error compensation for micro magnetic parts assembly equipment[J].Optics and Precision Engineering,2023,31(02):214-225.
任同群,江海川,张建昆等.微小磁性零件装配设备自动标定及误差补偿[J].光学精密工程,2023,31(02):214-225. DOI: 10.37188/OPE.20233102.0214.
REN Tongqun,JIANG Haichuan,ZHANG Jiankun,et al.Automatic calibration and error compensation for micro magnetic parts assembly equipment[J].Optics and Precision Engineering,2023,31(02):214-225. DOI: 10.37188/OPE.20233102.0214.
为了实现微小磁性零件装配设备的精密装配任务,弥补加工误差和安装误差带来的系统精度损失,提出了一套自动标定及误差补偿方法。依照设备布置形式建立了不同模块的坐标系,提取影响装配精度的全部误差参数。根据导轨的位置关系建立了模块之间的运动转换模型,进而推导出基于装配任务的误差补偿模型。以设备中的机器视觉系统作为测量工具,同时设计专用标定板。通过观察各模块运动前后特征点的坐标变化对误差参数进行测量和辨识,并使用粒子群算法对参数进行了全局优化。基于开发的自动标定软件,在装配区域进行了标定和验证实验。实验结果表明,补偿后的系统开环控制精度在6 μm以内,满足设备的装配精度需求。该方法为微小零件装配设备提供了自动化、高精度和高效率的标定方案。
The loss of system precision owing to machining and installation errors is common in the assembly of micro magnetic parts. To overcome this issue, an automatic calibration and error compensation method is proposed herein. The coordinate systems of different modules are established according to the equipment layout, and all the error parameters affecting the assembly accuracy are extracted. According to the positional relationship of the guide rails, a model for motion transformation between different modules is established, and an error compensation model is then derived to meet the assembly task. The machine vision system in the equipment is used to take measurements, and a special calibration board is designed. The error parameters are measured and identified by observing the coordinate changes in the feature points before and after motion. Furthermore, all parameters are globally optimized via particle swarm optimization. Based on the developed automatic calibration software, calibration and verification experiments are carried out in the assembly operation area. The experimental results show that the open-loop control accuracy of the system is within 6 μm after compensation, meeting the assembly accuracy requirements of the equipment. This method provides an automated, high-precision and high-efficiency calibration scheme for the assembly equipment of micro parts.
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