CIRCULAR INTERPOLATION CONTROL SYSTEM AND CIRCULAR INTERPOLATION ARITHMETIC UNIT

摘要

PURPOSE: To provide a circular interpolation control system which can perform the circular control with high accuracy and at a high speed by correcting a calculated slippage amount without performing any high-degree operation. ;CONSTITUTION: A circular interpolation control system of a numerical control device applies a segment calculation method of a coefficient type differential analysis system. In this control system, the next coordinate point B is calculated for the movement equivalent to a single segment. Then a slippage amount is calculated between the point B and a point C that is set at a position distant from the present coordinate point A set on an ideal circular arc 1 by an extent equal to a single segment length. Thus the coordinates of the point B are corrected by an extent equal to the calculated slippage amount.;COPYRIGHT: (C)1996,JPO