Using finite state automata (FSA) for formal modelling of affordances in human-machine cooperative manufacturing systems
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- Using finite state automata (FSA) for formal modelling of affordances in human-machine cooperative manufacturing systems
- Kim, Namhun; Shin, D.; Wysk, R. A.; Rothrock, L
- Issue Date
- TAYLOR & FRANCIS LTD
- INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH, v.48, no.5, pp.1303 - 1320
- Modelling complex systems poses significant challenges on how one represents the system components and interactions among them. In order to provide a systematic approach to represent human participation as a part of a dynamic system, this paper presents a formal automata model of human-machine cooperative systems that incorporates human capabilities with respect to system conditions. Specifically, we propose a control model for human-involved shop floor systems based on discrete event-based systems (DES) and an environmental concept known as an affordance. When modelling human-involved systems where a human operator is considered a crucial system component, it is necessary to analyse the model complexity that increases significantly due to a human's behavioural patterns. From the perspective of the temporal and physical state domains a human operator's behaviour is usually limited by attention and resource constraints. We investigate these limitations and map them into constrained system affordances, and then construct a formal human-machine cooperative model based on the finite state automaton (FSA) model. The proposed model can provide a framework to combine human activities into systems operations in consideration of human's effectivities and system affordances. A detailed application example is provided to illustrate that the proposed model can effectively be applied to manufacturing control systems.
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