Consider a surface geometry to be milled as shown in Fig. 8a. Along the horizontal direction x, one can enumerate a number of candidate locations of cutter centers (as shown in knots in Fig. 8b. The problem is to identify a path connecting these knots along X direction and feed ratealong this path leading to the minimum variation in MRR and cutting load imbalance. Take thepattern search method as an example. A vector can be defined as s=[x0, y0, xt,yt, x2t, y2t, x3t, y3t, ...,xNt, yNt] where t is the time step and ynt is the cutter center location y at the time nt. According to
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