Automatic model generation and PLC-code implementation for interlocking policies in industrial robot cells

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Flordal, Hugo,1977Chalmers tekniska högskola,Chalmers University of Technology (författare)

Automatic model generation and PLC-code implementation for interlocking policies in industrial robot cells

Artikel/kapitelEngelska2007

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Elsevier BV,2007

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LIBRIS-ID:oai:research.chalmers.se:03e3b0bc-4dfc-42cc-a7e0-f04502cc4904
https://doi.org/10.1016/j.conengprac.2006.11.001DOI
https://research.chalmers.se/publication/77397URI

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Språk:engelska
Sammanfattning på:engelska

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In industrial production lines, for example in the automotive industry, cells with multiple industrial robots are common. In such cells, each robot has to avoid running into static obstacles and when the robots work together in a shared space they must also avoid colliding with each other. Typically. the latter is enforced by manually implementing interlocks in programmable logic controllers (PLCs). This is a tedious. error-prone task that is a bottleneck in the development of production lines. The PLC-code being man-made also greatly complicates the maintenance and reconfiguration of such production lines. However, in industry today, a lot of development of robot cells is made offline in 3D simulation environments which enables the use of computers also for deciding and implementing the necessary coordination. This paper presents a method that makes use of information in a robot simulation environment in order to automatically extract finite state models. These models can be used to generate supervisors for ensuring that the deadlock situations that may arise as a consequence of the introduced interlocks are avoided. It is also possible to optimize the work cycle time for the cell. Finally, PLC-code to supervise the production cell can be automatically generated from the deadlock-free and possibly optimized system model. This approach results in a high flexibility in that the coordination function can be quickly reimplemented whenever necessary. A prototype implementation has been developed making use of a commercial 3D robot simulation tool, and a software tool for supervisor synthesis and code generation. The approach is general and should be possible to implement in most offline robot simulation tools. (c) 2007 Elsevier Ltd. All rights reserved.

Ämnesord och genrebeteckningar

NATURVETENSKAP Data- och informationsvetenskap hsv//swe
NATURAL SCIENCES Computer and Information Sciences hsv//eng
supervisory
model generations
discrete event systems
robot programming
programming
deadlock avoidance
programmable logic controller
DISCRETE-EVENT SYSTEMS
control

Biuppslag (personer, institutioner, konferenser, titlar ...)

Fabian, Martin,1960Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)fabian (författare)
Åkesson, Knut,1972Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)knut (författare)
Spensieri, D.Stiftelsen Fraunhofer-Chalmers Centrum för Industrimatematik (FCC),Fraunhofer-Chalmers Research Centre for Industrial Mathematics (FCC) (författare)
Chalmers tekniska högskolaStiftelsen Fraunhofer-Chalmers Centrum för Industrimatematik (FCC) (creator_code:org_t)

Sammanhörande titlar

Ingår i:Control Engineering Practice: Elsevier BV15:11, s. 1416-14260967-0661

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Av författaren/redakt...: Flordal, Hugo, 1 ...; Fabian, Martin, ...; Åkesson, Knut, 1 ...; Spensieri, D.

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NATURVETENSKAP: NATURVETENSKAP; och Data och informa ...

Artiklar i publikationen: Control Engineer ...

Av lärosätet: Chalmers tekniska högskola

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