Research and development on control system of winding machine for FRP sand-filling pipes

This paper presents the structure and production process of FPP sand-filling pipes and builds winding pattern model and speed control model according to filament winding theory. The open numerical control system of winding machine based on industrial computer and motion control card was designed. The spindle is driven by frequency converter which is controlled by motion control card, using feedback of rotary encoder mounted at the spindle to accomplish closed-loop speed control and measurement of spindle position. A servo motor is applied to complete accurate position control of the carriage. The control software is developed with VC++ 6.0 language based on Windows NT platform. The software structure and functions of process parameters setting, remote control, and winding after accident interruption are also introduced. It is proved that this system improves production efficiency and pipe quality greatly.