Simulation of a Parallel Manufacturing Operations

This thesis examines a manufacturing process using a real time interface with a 6502 microprocessor that gives the appearance of parallel processing. Two separate processes are operated, apparently simultaneously with an asynchronous interface between the two processes. An Apple microcomputer, an ISAAC data transfer system and a constructed simulation model are used to demonstrate this process. The model is constructed of Fischertechnik manufactured parts for the support framework, as well as gearing devices, small DC electric motors, and sensing devices in the form of photo-electric switches and single pole double throw switches physically activated by the constructed model. The software, written in Applesoft BASIC and Cyborg's Labsoft, was designed to operate the modeled processes simultaneously and allow an asynchronous interaction between the two processes. The model has applications for use as a method to illustrate manufacturing techniques and to assist in the design and control of manufacturing processes.