The Design and Implementation of Time Synchronization for CNC Systems Based on Switched Ethernet

摘要：

It requires accurate synchronization among the MCU. servo controllers and sensors in CNC systems for time stamping of data and motion control. This paper presents the design and implementation of time synchronization for CNC systems which employ switched Ethernet as its communication module. The method adopts the clock of switches as the master clock instead of that of MCU which usual is. To obtain accurate time synchronization, it uses a low-level time-stamping scheme and blocks the time synchronization frames until the actual time is equal to the time in the payload of the frames. A preemptive mechanism is introduced to make sure the time synchronization frames can be transmitted immediately when the actual time is equal to that Finally, experimental results are shown and discussed.

关键词： CNC Systems Switched Ethernet Preemptive Queues Time Synchronization

作者: Haibo Yang Hu Lin Yaodong Tao Jin Li

作者单位: The National Engineering Research Centre for High-end CNC of China, Shenyang Institute of Computing Technology, CAS College of Computing & Communication Engineering, Graduate University of the CAS Shenyang, China

会议类型: 国际会议

会议名称: The 2nd IEEE International Conference on Advanced Computer Control(第二届先进计算机控制国际会议 ICACC 2010)

会议地点: 沈阳

会议语种:英文

页码: 283-287

在线出版日期: 2010-03-27（万方平台首次上网日期，不代表论文的发表时间）