Control of Router Nodes in Production Manufacturing Processes

Koumboulis, Fotis N.; Fragkoulis, Dimitrios G.; Ioannou, Konstantinos A.

doi:10.1109/icosc.2018.8587843

Cited by 14 publications

(3 citation statements)

References 11 publications

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“…The robotic platform delivers the products from the output station of a machine to the input station of the next machine, the delivery process is concluded when the terminal switch is activated. The automaton of the i-th floor is of the form of the 6-tuple (for 6-tuple automata, see [12,13,15,19,20]):…”

Section: Horizontal Materials Handlingmentioning

confidence: 99%

Modular supervisory control for multi-floor manufacturing processes

Koumboulis

Fragkoulis

Michos

2023

Control Theory Technol.

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Due to space availability limitations and high land costs, there is an increasing development of multi-floor manufacturing (MFM) systems in urban and industrial areas. The problem of coordination in a multi-floor manufacturing process, in the Ramadge Wonham framework, is introduced. The manufacturing chain of each floor and the elevator system are modeled in the form of finite deterministic automata. The models of the multi-floor manufacturing process are parametric with respect to the number of floors and the number of manufacturing machines on each floor. The coordination desired performance is formulated in the form of desired regular languages in analytic forms. The languages are realized by appropriate supervisors in the form of finite deterministic automata. The models of the supervisors are also parametric with respect to the number of floors and the number of manufacturing machines on each floor. The total control of the coordination of the multi-floor manufacturing process is accomplished via a modular supervisory control architecture. The complexity of the supervisors as well as the complexity of the total modular supervisory architecture are determined in analytic forms with respect to the number of floors and the number of manufacturing machines on each floor. The special case of a two floor manufacturing process is presented as an illustrative example.

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Section: Horizontal Materials Handlingmentioning

confidence: 99%

Modular supervisory control for multi-floor manufacturing processes

Koumboulis

Fragkoulis

Michos

2023

Control Theory Technol.

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“…Here, the possibility of the presence of faults, in all subsystems, is considered. Also here, each subsystem of the manufacturing cell with possible faults will be modelled, in the form of discrete event systems (DES) in the class of finite deterministic automata (see [ 21 , 22 , 23 ]), i.e., in six tuples of the form

denotes the set of the states of

.…”

Section: A Des Model Of the Manufacturing Cellmentioning

confidence: 99%

“…Here, the case of multiple supervisors in a modular scheme will be used. For more details about the modular supervisory design, see [ 6 , 8 ] and the extensions developed in [ 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ].…”

Section: Supervisorsmentioning

confidence: 99%

Modular Supervisory Control for the Coordination of a Manufacturing Cell with Observable Faults

Kouvakas

Koumboulis

Fragkoulis

et al. 2022

Sensors

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In the present paper, a manufacturing cell in the presence of faults, coming from the devices of the process, is considered. The modular modeling of the subsystems of the cell is accomplished using of appropriate finite deterministic automata. The desired functionality of the cell as well as appropriate safety specifications are formulated as eleven desired languages. The desired languages are expressed as regular expressions in analytic forms. The languages are realized in the form of appropriate general type supervisor forms. Using these forms, a modular supervisory design scheme is accomplished providing satisfactory performance in the presence of faults as well guaranteeing the safety requirements. The aim of the present supervisor control scheme is to achieve tolerance of basic characteristics of the process coordination to upper-level faults, despite the presence of low-level faults in the devices of the process. The complexity of the supervisor scheme is computed.

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