修正逆伝達関数制御による工作機械の送りの高速化に関する研究

概要

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This paper describes the new feed control method-the modified inverse transfer function control method - of the numerically controlled machine tool to guarantee the geometrical accuracy of three-dimensional surface at very high feed speed.The method makes it possible to eliminate theoretically the feed servo error which is generated in feedback control and feedforward servo control. The control devices developed by the method consist of five 32 bits microcomputers which read numerical control command in advance, make interpolation for smoothing by Bezier curve, calculate constantly acceleration and feed rate, control the feed rate within a given acceleration and generate the numerical control final command in real time by multiplying inverse transfer functon. As a result, it was confirmed for three axis numerically controlled machining center to keep the geometrical accuracy of free surface workpiece weighing 98kN within ±0.02mm at feed rate lOm/min.
公益社団法人精密工学会の論文
1993-08-05