Adaptive Exterior Light and Speed Control System

Houdek, Frank; Raschke, Alexander

doi:10.1007/978-3-030-48077-6_24

Cited by 23 publications

(37 citation statements)

References 4 publications

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“…Animation scenarios simple state sequences, and associated run commands, that exercise the ELS for preliminary validation and regression testing. Reference scenarios the encoding of the provided validation sequences [7], and associated run commands, with imposed inputs and expected outputs, for validating the modelled ELS state machine; a prototype was developed to translate them from the provided tabular format [7]. Visual elements elements ignored by the analyses but aiding the visualization of scenarios (accompanied by a theme, stored in a separate file).…”

Section: Modelling Strategymentioning

confidence: 99%

“…As expected, the development of these components was not sequential but rather iterative as new ELS functions were added to the model. This process was applied to all 9 main ELS functions divided in 48 requirements as of version 1.17 [6], for all 12 valid variants (although only 4 effectively have distinct behaviour) and to all 9 validation sequences of version 1.7 [7]. This work focused on the ELS, but we believe a similar approach could be followed for the speed control system (SCS) [6], although the SCS is richer in continuous aspects, which would require additional abstractions.…”

Section: Modelling Strategymentioning

confidence: 99%

“…This process was applied to all 9 main ELS functions divided in 48 requirements as of version 1.17 [6], for all 12 valid variants (although only 4 effectively have distinct behaviour) and to all 9 validation sequences of version 1.7 [7]. This work focused on the ELS, but we believe a similar approach could be followed for the speed control system (SCS) [6], although the SCS is richer in continuous aspects, which would require additional abstractions. It should also be noted that the authors had no particular domain knowledge, and that the process was solely based on the provided reference material [6,7] and discussions with the case study chair.…”

Section: Modelling Strategymentioning

confidence: 99%

“…This work focused on the ELS, but we believe a similar approach could be followed for the speed control system (SCS) [6], although the SCS is richer in continuous aspects, which would require additional abstractions. It should also be noted that the authors had no particular domain knowledge, and that the process was solely based on the provided reference material [6,7] and discussions with the case study chair.…”

Section: Modelling Strategymentioning

confidence: 99%

“…Section 4 describes two explored approaches to modelling multiple variants, one in pure Electrum and another using language extension for feature-oriented design [9]. The ELS model was validated against all the provided validation sequences [7], and verified for most of the ELS requirements, as described in Sect. 5.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Validating Multiple Variants of an Automotive Light System with Electrum

Cunha

Macedo

Liu

2020

Rigorous State-Based Methods

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This paper reports on the development and validation of a formal model for an automotive adaptive exterior lights system (ELS) with multiple variants in Electrum, a lightweight formal specification language that extends Alloy with mutable relations and temporal logic. We explore different strategies to address variability, one in pure Electrum and another through an annotative language extension. We then show how Electrum and its Analyzer can be used to validate systems of this nature, namely by checking that the reference scenarios are admissible, and to automatically verify whether the established requirements hold. A prototype was developed to translate the provided validation sequences into Electrum and back to further automate the validation process. The resulting ELS model was validated against the provided validation sequences and verified for most of requirements for all variants.

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Section: Modelling Strategymentioning

confidence: 99%

Section: Modelling Strategymentioning

confidence: 99%

Section: Modelling Strategymentioning

confidence: 99%

Section: Modelling Strategymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Validating Multiple Variants of an Automotive Light System with Electrum

Cunha

Macedo

Liu

2020

Rigorous State-Based Methods

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Modelling an Automotive Software-Intensive System with Adaptive Features Using ASMETA

Arcaini

Bonfanti

Gargantini

et al. 2020

Lecture Notes in Computer Science

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In the context of automotive domain, modern control systems are software-intensive and have adaptive features to provide safety and comfort. These software-based features demand software engineering approaches and formal methods that are able to guarantee correct operation, since malfunctions may cause harm/damage. Adaptive Exterior Light and the Speed Control Systems are examples of software-intensive systems that equip modern cars. We have used the Abstract State Machines to model the behaviour of both control systems. Each model has been developed through model refinement, following the incremental way in which functional requirements are given. We used the ASMETA tool-set to support the simulation of the abstract models, their validation against the informal requirements, and the verification of behavioural properties. In this paper, we discuss our modelling, validation and verification strategies, and the results (in terms of features addressed and not) of our activities. In particular, we provide insights on how we addressed the adaptive features (the adaptive high beam headlights and the adaptive cruise control) by explicitly modelling their software control loops according to the MAPE-K (Monitor-Analyse-Plan-Execute over a shared Knowledge) reference control model for self-adaptive systems.

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Modelling and Validating an Automotive System in Classical B and Event-B

Leuschel

Mutz

Werth

2020

Rigorous State-Based Methods

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We have modelled parts of the ABZ automotive case study using the B-method. For the early phases of modelling we have used the classical B for software, while for proof we have used Event-B and Rodin. It is maybe surprising that classical B's machine inclusion mechanism along with operation calls can be used for modular system modelling. Moreover, for one particular style of modelling, the result can then be translated to superposition refinement with event extension in Event-B. Before conducting the proof, we have validated our models using model checking and animation with visualizations. The graphical visualizations were constructed using a new plugin (VisB) which helped uncover errors and transforms our model into an executable, interactive reference specification which can be examined by users without formal background.

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Adaptive Exterior Light and Speed Control System

Cited by 23 publications

References 4 publications

Validating Multiple Variants of an Automotive Light System with Electrum

Validating Multiple Variants of an Automotive Light System with Electrum

Modelling an Automotive Software-Intensive System with Adaptive Features Using ASMETA

Modelling and Validating an Automotive System in Classical B and Event-B

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