2012) A computational control implementation environment for automated manufacturing systemsThis paper presents a computational environment as a tool for supporting the implementation of control coding of an automated manufacturing system. The proposed environment considers a cyclic three-stage control development -modelling, synthesis and implementation -until the real system accomplishes the required specification, resulting in the automated and integrated manufacturing system. The research details the three stages and describes the steps executed for each one. The mathematical formalism used in this work is also presented, as a basis for control implementation. The implementation environment is proposed in order to validate the control structure of this formalism and to allow a progressive integration of control hardware and software. To submit to a test and validate the proposal environment, two experiments are performed, in two different manufacturing systems. Thus, it is demanded that the control system can be reconfigurable in a fast and reliable way.
This paper aims to present the development of the controller of a manufacturing system based on the application of the Supervisory Control Theory, in particular an extension of such theory named Local Modular Control approach. The foundations of this work are a Supervisory Control Architecture and a Programmable Logic Controller (PLC) method of implementation of such architecture, both of these found in the literature. The manufacturing system is constituted by an industrial robot that plays the role of a transport system and three workstations. We show that applying formal methods of controller synthesis, as well as applying the referred PLC method of implementation makes easier to express the control specifications, to check out the system's controlled behavior, and specially, to make the necessary modifications when the system has to be reconfigured.
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