Desenvolvimento de Sistema de Controle para Aparato de Soldagem por Atrito Rotativo

Abstract

The friction rotary welding (FRW) is a solid state material welding method that is able to weld not only similar but dissimilar materials as well. The FRW allows the union between two pieces of metal converting mechanical energy into thermal welding. The friction generated by the rotational momentum between the two surfaces generates enough heat to fuse the materials without reaching the fusion temperature, this mechanical connection can be done through atomic diffusion. The equipment needed to perform the FRW process needed a new control system. This paper presents the development of this new control system through a top-down approach based on successive refinement using modeling tools developed to model dynamic systems to discrete events. The result presented in this paper is the control system algorithm in Enhanced Mark Flow Graph, a high level Petri Net derivative and a systematic to map the model in C++ in order to use it in a PIC microcontroller.