DocumentCode :
2694471
Title :
Time-stamped cross-coupled control in networked CNC systems
Author :
Xu, Xiong ; Sheng, Xinjun ; Xiong, Zhenhua ; Zhu, XiangYang
Author_Institution :
Sch. of Mech. Eng., Shanghai Jiao Tong Univ., Shanghai, China
fYear :
2011
fDate :
9-13 May 2011
Firstpage :
4378
Lastpage :
4383
Abstract :
This paper proposes a time-stamped cross-coupled control (TSCCC) algorithm to deal with the asynchronous sampling and network-induced delays in networked computer numerical control (CNC) machines. It uses time-stamps to estimate the network-induced delays from the sampling instants of different axes to the controller node. The network-induced delays are considered for accurately estimating the contour error in real-time. Furthermore, a networked CNC simulation system based on TrueTime toolbox is constructed, on which the proposed TSCCC algorithm is compared with the cross-coupled control (CCC) algorithm. Simulation results on two DC servomotors show that the TSCCC algorithm achieves better contour accuracy than the CCC algorithm.
Keywords :
DC motors; computerised numerical control; delays; networked control systems; sampling methods; servomotors; DC servomotors; TSCCC algorithm; TrueTime toolbox; asynchronous sampling; contour error estimation; controller node; network induced delays; networked CNC simulation system; networked computer numerical control machine; time stamped cross-coupled control algorithm; Computer numerical control; Delay; Estimation; Interpolation; Mathematical model; Servomotors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Robotics and Automation (ICRA), 2011 IEEE International Conference on
Conference_Location :
Shanghai
ISSN :
1050-4729
Print_ISBN :
978-1-61284-386-5
Type :
conf
DOI :
10.1109/ICRA.2011.5979990
Filename :
5979990
Link To Document :
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