A General Direct Arc Interpolation Method

Circular interpolation methods are mostly introduced based on CNC machines, and point by point judgment methods are used to determine the end of the arcs, but these methods are less common and less efficient. This paper introduces a universal direct arc interpolation method. Using this method, all the points on an arc can be conveniently calculated in a time, without continuous judgment in the whole fitting procedure. This method is highly efficient and has no need to worry if the arc can reach the right end. The circular interpolation control method can be applied to CNC systems, such as CNC machine, multi-dof manipulator, etc..