Flexible transport system by cooperation of conveyer-loaded AGVs

A transport module for constructing an efficient and flexible material handling system are proposed in the paper: an AGV (automated guided vehicle) module loaded a conveyer in which it is possible to hand-over operation between two modules. The operation can solve the deadlock problem among AGVs in the process of material handling. Prototype modules are created and hand-over experiments are made to measure motion characteristics of the modules. Transport simulations are made for a model plant layout by using values from former experiments. The results show the effectiveness of the proposed module from the viewpoint of transport efficiency, especially for cellular-type or process-type plant layouts.

[1]  Jun Ota,et al.  Iterative Transportation Planning of Multiple Objects by Cooperative Mobile Robots , 1998 .

[2]  Toshihiro Tsumura.  AGV in Japan-recent trends of advanced research, development, and industrial applications , 1994, Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS'94).

[3]  Jacques Ferber,et al.  From Tom Thumb to the Dockers: some experiments with foraging robots , 1993 .

[4]  Ioannis Minis,et al.  A review of current research in manufacturing shop design integration , 1998, J. Intell. Manuf..

[5]  Yasuhisa Hasegawa,et al.  Distributed control of flexible transfer system (FTS) using learning automata , 1999, Proceedings 1999 IEEE International Conference on Robotics and Automation (Cat. No.99CH36288C).

[6]  Toshio Fukuda,et al.  Deadlock resolution in distributed autonomous robotic system with hand-to-hand motion , 1996, Proceedings of IEEE International Conference on Robotics and Automation.

[7]  Howie Choset,et al.  Discrete actuator array vectorfield design for distributed manipulation , 1999, Proceedings 1999 IEEE International Conference on Robotics and Automation (Cat. No.99CH36288C).

[8]  Tetsuo Tomiyama,et al.  The development of a cellular automatic warehouse , 1996, Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems. IROS '96.

[9]  J.-H. Ting.  Comparisons of single and mixed-model AGV systems , 1997 .