Abstract: To deal with wire-broken due to increasing harmful friction between magnet wire and nozzle, a control algorithm for traverse shaft moving back and forth in high speed winding is proposed to keep the limitied friction fluctuation and reduce the friction between magnet wire and nozzle. Based on trajectory characteristic, moving back and forth in high speed of traverse shaft is simulated and discrete points in trajectory are obtained. Combined discrete points and four-parameter sine curve, a approximated parametric trajectory of traverse shaft moving back and forth is confirmed. Using fourth Runge-kutta fomula to obtain the inatial point and second-order Taylor’s equation to estimate the next interpolate point, the interpolation for approximated parametric trajectory of traverse shaft is accomplished under the condition of confined chord error. Experiment results show that limited friction fluctuation between electromagnetic wire and nozzle can be kept efficiently, quality of winding can be improved greatly and tesion control accurracy is guranteed by the proposed method.

Key words: High speed winding, Limited friction fluctuation, Parametric trajectory interpolation