Control Interpreted Petri Nets - Model Checking and Synthesis

Grobelna, Iwona

doi:10.5772/47797

Cited by 3 publications

(4 citation statements)

References 17 publications

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“…Some of these Petri net classes were developed by adopting or expanding upon the concepts of synchronized and interpreted Petri nets [20] or targeting specific areas, such as Control Interpreted Petri nets (independently proposed by [22,23]).…”

Section: Related Workmentioning

confidence: 99%

Event-Based Modeling of Input Signal Behaviors for Discrete-Event Controllers

Gomes,

Natário,

Costa

et al. 2024

Applied Sciences

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Controllers for discrete-event systems are commonly designed using state-based formalisms, like state diagrams and Petri nets. These formalisms are strongly supported by the concept of events, which, from an automation system perspective, can be associated with a simple change in the value of a signal or more complex behavioral evolutions of the signals. In this paper, the characterization of several types of events is proposed, associated with different types of signals, such as Boolean and multivalued signals. The major goal of this characterization is to improve the compactness of the model, benefiting the editing and visual interpretation of the graphical model but keeping precise execution semantics, which in turn allows for the use of computational tools covering the different stages of system development. The behavioral model of the controller is produced using a non-autonomous class of Petri nets, the IOPT nets, and the associated IOPT-Tools, which supports the specification, simulation, property verification, and automatic code generation ready to be deployed into implementation platforms. All the types of proposed events have a behavioral sub-model executed concurrently with the main model of the controller. An application example is provided to illustrate some of the advantages of the adoption of the proposed approach, encapsulating the behavioral dependencies on the evolution of input signals into events.

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Section: Related Workmentioning

confidence: 99%

Event-Based Modeling of Input Signal Behaviors for Discrete-Event Controllers

Gomes,

Natário,

Costa

et al. 2024

Applied Sciences

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“…In a series of studies by Grobelna et al, control interpreted Petri nets are transformed to a rule-based textual intermediate format called logical models and transformed to NuSMV models by a rule-based translation engine [42][43][44]. Lastly, Nemeth et al translate FBDs to colored Petri nets to use them as intermediate formats in model checking a nuclear power plant's control system [85].…”

Section: Petri Net Modelsmentioning

confidence: 99%

An overview of model checking practices on verification of PLC software

et al. 2014

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Programmable logic controllers (PLCs) are heavily used in industrial control systems, because of their high capacity of simultaneous input/output processing capabilities. Characteristically, PLC systems are used in mission critical systems, and PLC software needs to conform real-time constraints in order to work properly. Since PLC programming requires mastering low-level instructions or assembly like languages, an important step in PLC software production is modelling using a formal approach like Petri nets or automata. Afterward, PLC software is produced semiautomatically from the model and refined iteratively. Model checking, on the other hand, is a well-known software verification approach, where typically a set of timed properties are verified by exploring the transition system produced from the software model at hand. Naturally, model checking is applied in a variety of ways to verify the correctness of PLC-based software. In this paper, we provide a broad view about the difficulties that are encountered during the model checking process applied at the verification phase of PLC software production. We classify the approaches from two different perCommunicated by Prof. Einar Broch Johnsen and Luigia Petre. spectives: first, the model checking approach/tool used in the verification process, and second, the software model/source code and its transformation to model checker's specification language. In a nutshell, we have mainly examined SPIN, SMV, and UPPAAL-based model checking activities and model construction using Instruction Lists (and alike), Function Block Diagrams, and Petri nets/automata-based model construction activities. As a result of our studies, we provide a comparison among the studies in the literature regarding various aspects like their application areas, performance considerations, and model checking processes. Our survey can be used to provide guidance for the scholars and practitioners planning to integrate model checking to PLC-based software verification activities.

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“…By defining the system boundaries, based on non-autonomous Petri-Nets, the reusability of such fragments can be easier reused, because of the precise definition of its signature (the parameters given to the function and the result of its computation) and its inner behavior.Afterwards, the behavior can be validated against specific issues, as deadlocks, livelocks and conflicts before the first implementation has been done. The more lately an error is detected the expenses in fixing it rise [8].Another research area is the sustainability of automation software implemented in PLCs. its focus is in minimizing the operational cost under several conditions, like ensuring the service level initial agreed with contractors or reducing the impact on the environment in production and logistic.…”

mentioning

confidence: 99%

“…Afterwards, the behavior can be validated against specific issues, as deadlocks, livelocks and conflicts before the first implementation has been done. The more lately an error is detected the expenses in fixing it rise [8].…”

mentioning

confidence: 99%

Modeling of the PLC Behavior in Intralogistics with Non-Autonomous Hybrid Petri-Nets

Kopecki

Lauck

2014

AMM

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This document introduces a new kind of non-autonomous petri net for modelling decentralized systems in intralogistics controlled by PLCs. It extends the Signal Interpreted Petri Net with hybrid elements for continuous and discrete aspects to control external input-/output-events, places and transitions. It enables the modelling of continuous changes on the output places, e.g. linear acceleration of motors. After the formal model-definition, an example of one conveyor and the corresponding control-logic is given.

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Control Interpreted Petri Nets - Model Checking and Synthesis

Cited by 3 publications

References 17 publications

Event-Based Modeling of Input Signal Behaviors for Discrete-Event Controllers

Event-Based Modeling of Input Signal Behaviors for Discrete-Event Controllers

An overview of model checking practices on verification of PLC software

Modeling of the PLC Behavior in Intralogistics with Non-Autonomous Hybrid Petri-Nets

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