Research and Implementations of the IEEE 1588 Precision Time Protocol Based on ARM-Linux

2010 ◽  
Vol 156-157 ◽  
pp. 1492-1496
Author(s):  
Guang You Yang ◽  
Zhi Jian Ye ◽  
Shuang Qing Zhang ◽  
Wan Xu
Keyword(s):  
Control System ◽  
Distributed Control ◽  
Clock Synchronization ◽  
Distributed Control System ◽  
Clock Frequency ◽  
Ieee 1588 ◽  
Working Principle ◽  
Precision Time ◽  
Specialized Hardware ◽  
Precision Time Protocol

The clock synchronization is the key technology in distributed control system. This paper investigates the method to adjust computer clock frequency and time in embedded control system based on Ethernet. This paper also analyses the basic working principle of the IEEE 1588 Precision Time Protocol. In particular, it outlines the working principle of the free PTPd that is the software only implementations of the IEEE 1588 Precision Time Protocol. In the ARM-Linux environment, it presents a clock synchronization method to achieve high precise clock synchronization in distributed control system using PTPd. The results indicate that it is able to synchronize distributed clocks with the accuracy less than 500 microseconds using PTPd without the support of specialized hardware.

The Implementation of IEEE 1588-2008 Precision Time Protocol on the STM32F107

2012 ◽  
Vol 522 ◽  
pp. 868-873 ◽  
Author(s):  
Guang You Yang ◽  
Yi Zheng ◽  
Zhi Yan Ma ◽  
Xin Yu Hu
Keyword(s):  
Control System ◽  
Motion Control ◽  
High Precision ◽  
Clock Synchronization ◽  
Time Stamp ◽  
Protocol Stack ◽  
Adjustment Mechanism ◽  
Precision Time ◽  
Precision Clock ◽  
Precision Time Protocol

High precision clock synchronization is the basis for all applications in network-based distributed motion control system. To solve this problem, the clock synchronization principle is analysed; the initialization process of STM32F107VC PTP(Precision Time Protocol) hardware unit is introduced, and the process of capturing time stamp by PTP hardware unit, as well as clock adjustment mechanism, is in-depth dissected. PTPd v2 clock synchronization is realized in STM32F107VC platform supported by LwIP protocol stack. The results indicate that it is able to achieve an accuracy of less than 260ns clock synchronization based on STM32F107VC PTP hardware unit.

Capture Strategy Based on a Distributed Control System for a Large-scale Space End-Effector

ROBOT ◽  
2011 ◽  
Vol 33 (4) ◽  
pp. 434-439 ◽  
Author(s):  
Dangyang JIE ◽  
Fenglei NI ◽  
Yisong TAN ◽  
Hong LIU ◽  
Hegao CAI
Keyword(s):  
Control System ◽  
Distributed Control ◽  
Large Scale ◽  
Scale Space ◽  
Distributed Control System ◽  
End Effector

scholarly journals Structure of distributed control system in Seimei telescope

2021 ◽  
pp. 1-8
Author(s):  
Ichiro Jikuya ◽  
Daichi Uchida ◽  
Masaru Kino ◽  
Mikio Kurita ◽  
Katsuhiko Yamada
Keyword(s):  
Control System ◽  
Distributed Control ◽  
Distributed Control System

Fibre Optic Highway Based Distributed Control System

1993 ◽  
Vol 22 (2) ◽  
pp. 57-59
Author(s):  
S. C. Gupta ◽  
Atul Agarwal ◽  
K. N. Singh
Keyword(s):  
Control System ◽  
Distributed Control ◽  
Distributed Control System ◽  
Fibre Optic
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