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Optimal sequencing of double-gripper gantry robot moves in tightly-coupled serial production systems

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2 Author(s)
Qi Su ; Dept. of Ind. & Syst. Eng., Florida Int. Univ., Miami, FL, USA ; Chen, F.F.

This study addresses the problem of scheduling double-gripper gantry robots and provides a structure for analyzing scheduling problems in a tightly-coupled automated serial production line with deterministic processing time. Literature to date indicates that there has been no documented effort dealing with the scheduling problem of double-gripper gantry robots. This paper presents an optimal schedule by analyzing the cycle time formula for two-station (m=2) tightly-coupled production lines served by a double-gripper gantry robot. The result is then generalized to the problem of scheduling a gantry robot in a production line with m (where m>2) workstations, and finally an optimal schedule for the m-station case is developed. The effectiveness of using double-gripper gantry robots is discussed and some analytical insights into the employment of double-gripper gantry robot are provided for manufacturing system designers

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Robotics and Automation, IEEE Transactions on  (Volume:12 ,  Issue: 1 )