Candidate: Rodrigo Barbosa Souto
Program: UFSC / POSMEC
Date: March, 2005
Advisor: Victor Juliano De Negri
Co-advisor: José Eduardo Ribeiro Cury (DAS)
Abstract: A study is here presented on the methods, techniques, tools and models of automatic systems design and the optimization of their modeling, design systematization and implementation is proposed. Through the conceptual design of automatic manipulation and assembly systems (SMMA in portuguese), the structural and functional modeling of automatic systems is studied. The model utilized is Channel/Instance net with the inclusion of new entities to represent the interconnection with the external environment and thereby propose new behavioral models for these entities using the theory of languages and automatons. With this approach the communication of the system with the external environment, especially with users, is dealt with in a more systematic way than the traditional methods. The design procedures and implementation structure in PLC for the control are achieved through the theory of local modular supervisory control. Many studies on design techniques for diverse types of automatic systems have been carried out to establish a design methodology for these systems. In this way, design has been optimized contributing to an improvement in industrial activities at all levels. For the group of systems researched here, the discrete events systems (DES), some advances have previously been made mainly regarding flow control of countable products. However, the techniques presented in this study are more general being based on control of material and energy in a continuous way. The design of a simple hydraulic system with its testing and validation using a simulation facility installed in the laboratory of hydraulic and pneumatic systems (LASHIP) at UFSC were carried out. The results obtained demonstrate that the proposal is viable and they promote a better understanding of the problem, assisting in the activities of automatic systems design.
SOUTO, R. B. Projeto de sistemas automáticos com modelagem e controle da comunicação com o ambiente externo. 2005. 161 p. Dissertação (Mestrado em Engenharia Mecânica). Universidade Federal de Santa Catarina, Florianópolis.