Title: Control system design and analysis of FRP pipe thread-grinding machine

Authors: Jiazhong Xu, Ming Qiao, Xinying Wang

Addresses: College of Automation, Harbin University of Science and Technology, Harbin 150080, China. ' College of Automation, Harbin University of Science and Technology, Harbin 150080, China. ' College of Automation, Harbin University of Science and Technology, Harbin 150080, China

Abstract: The male thread manufacturing technology is a key factor that influences the production efficiency and the connection performance of large diameter Fibre Reinforced Plastic (FRP) pipes. The numerical control system of an FRP pipe thread-grinding machine based on Programmable Multi-Axis Controller (PMAC) and industry computer is described. The mechanical structure, the thread-processing technology and the development of the system are introduced. To eliminate the low-velocity creeping phenomenon, the friction dynamics of the radial servo control system is researched. Three key parameters that affect low-velocity motion performance are analysed, and some methods that improve the motion performance are put forward.

Keywords: FRP pipes; thread grinding; motion control; friction; low-velocity performance; fibre reinforced plastics; radial servo control; NC machining; thread manufacturing.

DOI: 10.1504/IJCAT.2010.036021

International Journal of Computer Applications in Technology, 2010 Vol.39 No.4, pp.177 - 186

Available online: 12 Oct 2010 *

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