Rapid Prototyping of Sequential Controllers With Petri Nets

Orth, Philipp; Bollig, Alexander; Abel, Dirk

doi:10.3182/20050703-6-cz-1902.00350

Cited by 5 publications

(2 citation statements)

References 6 publications

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“…In a Petri net, distributed states are modelled with discrete tokens, which can be interpreted as processed units distributed over the plant (e.g., [74]). The popularity of Petri nets in industrial automation can also be attributed to the fact that the international standard for sequential function charts, which are used to design PLDs, is based on them [75].…”

Section: Logical Control In Artefactsmentioning

confidence: 99%

Achieving Closed‐Loop Control Simulation of Human‐Artefact Interaction: A Comparative Review

Vegte

Horváth

2011

Modelling and Simulation in Engineering

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To include user interactions in simulations of product use, the most common approach is to couple human subjects to simulation models, using hardware interfaces to close the simulation-control loop. Testing with virtual human models could offer a lowcost addition to evaluation with human subjects. This paper explores the possibilities for coupling human and artefact models to achieve fully software-based interaction simulations. We have critically reviewed existing partial solutions to simulate or execute control (both human control and product-embedded control) and compared solutions from literature with a proof-of-concept we have recently developed. Our concept closes all loops, but it does not rely on validated algorithms to predict human decision making and low-level human motor control. For low-level control, validated solutions are available from other approaches. For human decision making, however, validated algorithms exist only to predict the timing but not the reasoning behind it. To identify decision-making schemes beyond what designers can conjecture, testing with human subjects remains indispensable.

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Section: Logical Control In Artefactsmentioning

confidence: 99%

Achieving Closed‐Loop Control Simulation of Human‐Artefact Interaction: A Comparative Review

Vegte

Horváth

2011

Modelling and Simulation in Engineering

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“…In a Petri net, distributed states are modeled with discrete tokens, which can be interpreted as processed units distributed over the plant [e.g., 53]. The popularity of Petri nets in industrial automation can also be attributed to the fact that the international standard for sequential function charts, which are used to design PLDs, is based on them [54].…”

Section: Logical Control Of Artifact Simulation and Simulation Of Logmentioning

confidence: 99%

Closing the Loops Without Human Subjects: A Survey of Control Approaches in Simulation of Human-Artifact Interaction

Vegte

́th

2010

Volume 3: 30th Computers and Information in Engineering Conference, Parts a and B

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To include interactions with human users in simulations of the use of products, the most common approach is to couple human subjects to the behavioral product model in the simulation loop using interfaces based on VR and haptics. Replacing human subjects by human models with simulation capabilities could offer a cost-saving alternative. Currently available human models have not yet been deployed this way. This paper explores the possibilities to achieve mutual closed-loop coupling between human models and artifact models for enabling fully software-based interaction simulations. We have not only investigated human control in simulations, but also solutions to include embedded control in artifacts. The paper critically reviews existing (partial) solutions to simulate or execute control behaviors, and to close the control loops we identified in human-artifact interaction simulation. We concluded that closed-loop control of interaction simulations can be achieved by selectively combining existing partial solutions. Inclusion of decision-making appears to be the biggest challenge. Promising solutions are (i) cognitive simulation and (ii) execution of conjectured interactions specified as logical instructions, typically in the form of scenarios. Based on scenarios, which we expect to be more intuitive for designers, a new approach is now being developed.

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