Winding Machine Tension Control System

Filament winding forming technology of composite material is widely considered and used because of its characteristic: once-for-all forming with continuous filament and high strength. Due to the intertwining tension, in the process of filament winding, the inner layer filament will have a shrinkage strain because of the radial direction contact pressure from the outer layer filament thus the inner layer filament is shrink while the out layer filament is tight. In order to avoid this phenomenon and make both layers receive same tension basically, here, using elastic mechanics theory, we deduced the computing formula to calculate the needed tension of each layer. For those products whose mandrel must be removed, the formula of residual stress as well as the intertwining tension and radial displacement that act on the mandrel has been given. The former can be used to design mandrel while the latter could be used to control the tolerance of the final product. For those products whose mandrel needn't be removed, the relationship between mandrel rigidity and the maximum winding tension has been given.By analyzing the characteristic of tension control, we design to use the system of which the torque motor is controlled by micro computer. And intelligence sensor be used to tension closed-loop control is proposed to ensure that tension control could meet the functional requirements. DC torque motor has big stall torque, low no-load speed, could drive load without any graduating device, it not only removes backlash and shorten driving chains but also has high reaction velocity and good linearity and so on, thus ensure the system stability and static precision as well as dynamic precision. Using special data-collection ADuC824 chip to form the intelligence sensor since it can receive weak signal directly from the sensor, because of the high integration and small volume it can simplify the structure greatly. Fuzzy self-adaptive PID control could be designed by founding and analyzing mathematic model of all parts of the tension control system. Making simulation experiment of the tension system by MatLab/Simulink and compare with traditional PID, the test result indicates that the control system makes the control quality (celerity, veracity, stability) compatible, meets the control requirements.