High-speed manufacturing has become an indispensable topic in the machine industry recently However the former numerical control for servo positioning system (hereinafter referred to as "NC"), which have achieved wide use in this field, invariably use proportional control. Consequently, the NC has a large response lag intrinsic to this control, during simultaneous plural-axes control, resulting locus errors (such as corner drooping, curvature contraction error, and phase deviation error) are inevitable. In addition, although the cause of these errors is often misinterpreted by the average user as being due to the low rigidity of the machine, the proportional control algorithms account for most of the roblem. Since these errors are proportionate to the position-loop-gain and movement speed,this compensatory method parameter adjusts for each system in advance and converts interpolated pulse row data. As a result of incorporating this method the time lag and locus error that had resulted from the high-speed process, have been eliminated. Additionally, in the state of high-speed process, this method allows the system to perform acceleration/deceleration without any redundancy, using 100% of the servo actuator's power.
