Formal Verification of Control Modules in Cyber-Physical Systems

The paper proposes a novel formal verification method for a state-based control module of a cyber-physical system. The initial specification in the form of user-friendly UML state machine diagrams is written as an abstract rule-based logical model. The logical model is then used both for formal veri...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Vol. 20; no. 18; p. 5154
Main Author: Grobelna, Iwona
Format: Journal Article
Language:English
Published: Basel MDPI AG 10.09.2020
MDPI
Subjects:
Algorithms
Automation
control systems
cyber-physical systems
Design
Field programmable gate arrays
formal verification
Language
manufacturing systems
Methods
model checking
Software engineering
Systems development
ISSN:1424-8220, 1424-8220
Online Access:Get full text
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Summary:The paper proposes a novel formal verification method for a state-based control module of a cyber-physical system. The initial specification in the form of user-friendly UML state machine diagrams is written as an abstract rule-based logical model. The logical model is then used both for formal verification using the model checking technique and for prototype implementation in FPGA devices. The model is automatically transformed into a verifiable model in nuXmv format and into synthesizable code in VHDL language, which ensures that the resulting models are consistent with each other. It also allows the early detection of any errors related to the specification. A case study of a manufacturing automation system is presented to illustrate the approach.
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ISSN:1424-8220
1424-8220
DOI:10.3390/s20185154