Hierarchical and modular control of reconfigurable manufacturing systems

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Ovul_Arslan_1936251_Thesis.pdf

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2022-2-11

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Arslan, Övül

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Reconfigurable manufacturing systems (RMS) were introduced as a new manufacturing concept for rapidly adjusting the production capacity and functionality of manufacturing systems. Hereby, the control of RMS requires realizing each desired configuration and changing between configurations on request, whereby a suitable design approach should scale to large-scale systems. In this thesis, we develop a controller design method for RMS that supports modular design and is scalable to RMS of large size. As the first step, we introduce the new notion of an attraction-preserving natural observer, which makes it possible to apply abstraction-based supervisor design for state attraction. Such supervisor is needed in order to move an RMS to a correct system state when performing a configuration change and starting up a new configuration. We further extend our method to the case of modular systems in order to ensure applicability to large-scale systems. Several examples demonstrate the applicability of our method.

Subject Keywords

Reconfigurable manufacturing systems, Discrete event systems, Supervisory control, Abstraction, State attraction

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https://hdl.handle.net/11511/96715

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

Ö. Arslan, “Hierarchical and modular control of reconfigurable manufacturing systems,” M.S. - Master of Science, Middle East Technical University, 2022.