Model-Based Engineering, Safety Analysis and Risk Assessment for Personal Care Robots

Yakymets, Nataliya; Sango, Marc; Dhouib, Saadia; Gelin, Rodolphe

doi:10.1109/iros.2018.8594115

Cited by 6 publications

(2 citation statements)

References 8 publications

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“…Yakymets et al [40] identified this need for an integrated approach that covers all phases of the safety life cycle by developing a safety assessment framework called Sophia [41]. This framework supports the generation of required artifacts, from system specification to verification and validation activities, to comply with the safety standards.…”

Section: Literature Reviewmentioning

confidence: 99%

An Integrated System Design and Safety Framework for Model-Based Safety Analysis

Krishnan

Bhada

2020

IEEE Access

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Safety analysis is often performed independent of the system design life cycle, leading to inconsistency between the system design and the safety artifact. Additionally, the process of generating safety artifacts is manual, time-consuming, and error-prone. As a result, safety analysis often requires rework , is expensive, and increases system development time. Several model-based systems engineering (MBSE) approaches have been developed to automatically generate certain safety artifacts. However, these approaches only cover part of the system design and safety life cycle. To truly leverage the benefits of MBSE, system design must be undertaken together with safety analysis for the entire life cycle, and multiple safety artifacts must be generated from the same model. Moreover, MBSE approaches that require a model transformation between the system design and the safety model suffer from the inability to automatically reflect changes made to a safety artifact in the system and the safety model. This paper presents a framework to integrate the entire system design and safety life cycle using an MBSE approach. Both the system design and the safety data are captured in a single SysML model, from which safety artifacts such as failure modes and effects analysis (FMEA) tables and fault trees are automatically generated. This framework ensures consistency between the system design and the safety analysis by requiring no model transformation, thus reducing the resources required for safety analysis. The proposed Integrated System Design and Safety (ISDS) framework comprises three phases that together cover the entire system design and safety life cycle. In this paper, the application of Phase 1 of the framework to a real-world case study is demonstrated. INDEX TERMS Model-based systems engineering (MBSE), safety analysis, fault tree analysis (FTA), failure modes and effects analysis (FMEA), systems engineering, hazard analysis, SysML

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Section: Literature Reviewmentioning

confidence: 99%

An Integrated System Design and Safety Framework for Model-Based Safety Analysis

Krishnan

Bhada

2020

IEEE Access

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“…To address these limitations, researchers have adopted a model-based systems engineering (MBSE) approach to safety assessment [12], [18], [19]. Studies have shown that adapting an MBSE approach to system development, commonly referred to as model-based development (MBD), improves the completeness and consistency in system development [20], fosters improved communication across design teams [20], provides added traceability between different models of the system [21], and enables easy integration with other engineering analysis tools [22].…”

Section: Introductionmentioning

confidence: 99%

Integrated System Design and Safety Framework for Model-Based Safety Assessment

Krishnan

Bhada

2022

IEEE Access

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The increased complexity of modern engineered systems has introduced novel challenges for assessing their safety early in the life cycle. For example, due to the iterative nature of the design and safety life cycle, there is constant data transformation and feedback of information between the system design models, safety analyses, and safety verification. Data transformation and feedback are often manually performed by engineers, which is time-consuming and error prone and can introduce inconsistencies in safety assessments. Although several model-based systems engineering approaches have been developed for safety analysis and safety verification, current approaches do not address the inconsistencies introduced in the safety assessment process. This study describes the Integrated System Design and Safety (ISDS) framework, which is a model-based safety assessment framework that aims to eliminate such inconsistencies. The framework combines a model-based safety analysis approach with a model-based safety verification. This paper extends previous work, which focused on the model-based safety analysis approach, to describe the model-based safety verification approach adopted in the ISDS framework. Safety verification is performed using a simulation-based fault injection approach and enabled by a fault injection engine, which injects failures into the system design and characterizes system behaviors to identify safety violations impacting the system. The results from the case study, in which the framework is used to assess the safety of a forward collision warning system, highlight that the algorithms and automated feedback loops of the framework can reduce inconsistencies in the safety assessment process while also identifying safety violations impacting the system.INDEX TERMS Model-based systems engineering (MBSE), safety analysis, failure modes and effects analysis (FMEA), systems engineering, SysML, simulation-based fault injection, safety verification.

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MBSE for SMEs with Domain-Specific Safety Analyses and Loose Tool Coupling

Berezowski

Haid

2023

Lecture Notes in Networks and Systems

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Model-Based Engineering, Safety Analysis and Risk Assessment for Personal Care Robots

Cited by 6 publications

References 8 publications

An Integrated System Design and Safety Framework for Model-Based Safety Analysis

An Integrated System Design and Safety Framework for Model-Based Safety Analysis

Integrated System Design and Safety Framework for Model-Based Safety Assessment

MBSE for SMEs with Domain-Specific Safety Analyses and Loose Tool Coupling

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