Control system of multiple fiber tows placement

 

 

HE Qin

 

( Department of Mechanical and Electrical Engineering, Wen Hua College, Wuhan 430074, China)

 

 

Abstract: Aiming at the problem that traditional composites forming technologies were difficult to guarantee the processing quality of complex components such as components with small curvature radius or with concaveconvex surface, the latest fiber placement technology was analysed. A control system was designed based on the mainstream open control mode of a PC machine combining with a programmable multiaxis motion controller. VC++6.0 was used to build the manmachine interface. Hardware and software were designed to complete speed and displacement control of each motor through PMACⅡ, thus achieving independent movement control of each fiber bundle and overall joint movement control, so as to realize the control of laying pressure. At the same time, a pressure feedback system was designed to realize the accurate pressure control of multiple fiber tows. Research results show that the control system could make realtime monitor of the parameters in the laying process, and perform automatic or manual operation. It not only  can smoothly complete surface uneven components laying operations, but also realize that the pressure errors were ±3%N within the range 30N, ensuring the quality of laying.

 

Key words: placement head; fiber tow; PMACⅡ; control system