Patent ID: 6823234
Filing Date: 2004-11-23
Classification: G05B

Abstract:
An interpolation method of creating a smooth curve based on a sequence of command points and performing interpolation on the smooth curve using a numerical controller, comprising the steps of:(a) creating interpolation points between adjacent twos of the sequence of command points as shape-defining points; (b) selecting one shape-defining point and shape-defining points in front and in the rear of the one shape-defining point from the shape-defining points created in said step (a); (c) creating an approximate curve for the shape-defining points selected in said step (b); (d) moving the one shape defining point towards the approximate curve created in said step (c) to determine a modified shape-defining point for the one shape-defining point; (e) repeatedly executing said steps (b) to (d) for the other shape-defining points to obtain a sequence of modified shape-defining points; (f) defining a curve passing the sequence of modified shape-defining points; and (g) perform interpolation on the curve defined in said step (f).