[1]XIAO Wenlei,WANG Xiangyu,ZHANG Pengfei,et al.Online real-time measurement system of laser tracker supporting interface of industrial ethernet[J].CAAI Transactions on Intelligent Systems,2018,13(2):182-188.[doi:10.11992/tis.201611001]
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Online real-time measurement system of laser tracker supporting interface of industrial ethernet

CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume: 13 Number of periods: 2018 2 Page number: 182-188 Column: 学术论文—智能系统 Public date: 2018-04-15
Title:
Online real-time measurement system of laser tracker supporting interface of industrial ethernet
Author(s):
XIAO Wenlei;  WANG Xiangyu;  ZHANG Pengfei;  ZHAO Gang
School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
Keywords:
laser tracker; fieldbus; on-line; real-time; embedded systems; automation control; laser applications; bus transportation
CLC:
TP271
DOI:
10.11992/tis.201611001
Abstract:
Laser tracker is one of the commonly used coordinate measurement machines(CMM) in large space that has good portability and a high precision, thus it is widely used in industrial production process. However, Laser tracker is usually controlled by the third party software and the measurement data are also processed offline by the third party software, therefore, its application is restrictive and it is hard to feed back the space coordinates of the measured object in real time. Based on tracker programming interface (TPI) provided by the laser tracker providers, users can design customized applications to operate the laser tracker for meeting the specific requirements. EtherCAT is one of the standard IEC61158 fieldbuses, it has extremely high stability and real-timeness. Combining laser tracker program development with the development of EtherCAT slave station, by using the embedded system and EtherCAT Slave Controller (ESC), this paper proposed a new way from design to implementation that makes laser tracker become a EtherCAT laser tracker slave station, the online real-time measurement of laser tracker in fieldbus was realized and the application field was extended. The experiments verified that the data real-timeness reached the expected 100 ms cycle, it was stable and reliable.
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