Analisador de planos para sistemas automatizados baseados em CLPs

Abstract

Intelligent systems application in industrial environments goes against cultural and technical factors of the \"shop floor\". Although this kind of system has being developed for more than 50 years, its practical applications in industrial fields are still limited and will often challenging. Talking specifically about automated planning, a language ruptures hinders the practical implementation. In general automated planning solutions are characterized by a formal language called PDDL (Planning Domain Definition Language), while industrial systems have a simple, centralized, closed loop and low-level language, such as Ladder or SFC (Sequential Flow Chart) based on Programmable Logic Controllers (PLCs). Automated planning solutions, in turn, address specific problems (with initial and goal scenarios predefined) and solve only a case per solution. This feature seems to be interesting in some cases, since the generic domains models cannot predict all possible scenarios of a domain. Therefore the applicability of intelligent systems in industrial cases is directly linked to the development of applications that makes the integration between these languages easier, ensuring access to information, previously centered on PLC and analyzing specific situations and not just a generic domain. This paper presents an application that integrates automated planning solution with PLCs and analyzes the functionality of PLC with and without this kind of integration. Preliminary results of the proposed structure for the integrator application are showed using OPC and TCP/IP in Client / Server approaches.