Use of graphical simulation to design the layout of a robotic cell

An approach to the layout design of a robot based flexible automation cell is described. A case study is presented for the design of a sixteen workstation laboratory automation system based around a track mounted robot, in which an exceptionally high level of operational flexibility is required. A graphical simulation model of the proposed system has been developed using AT&T Istel's "Witness" visual interactive simulation software. Visual feedback from the animated display provides process insight and aids in finding more effective workstation arrangements within the cell, reducing cycle time and allowing increased throughput and capacity. The development of the simulation model is described, including the features that allow it to be quickly reconfigured, the selection of a layout for the first iteration and the choice of appropriate evaluation criteria.