Assembly sequence planning for a chip mounter using transportation algorithm

This paper proposes a sequence planning method to reduce the assembly time of gantry-type chip mounters with single head. We divide the overall path of the chip mounter into forward and backward path, and formulate the optimization problem as a transportation problem and an Euler's tour problem. The transportation algorithm is applied to the formulated problem to find an optimal backward path, and then Euler's tour algorithm is used to generate an assembly sequence. Simulation results are presented to verify the usefulness of the method.