Engineering Dynamic Adaptation for Achieving Cost-Efficient Resilience in Software-Intensive Embedded Systems

Adler, Rasmus; Schneider, Daniel; Trapp, Mario

doi:10.1109/iceccs.2010.22

Cited by 6 publications

(3 citation statements)

References 28 publications

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“…They perform availability and cost evaluations using Fault Trees and Monte Carlo simulations. Implicit redundancies are also aligned with the goal of reusing components . The paper describes an adaptation model used to specify for each component its implicit redundancies and quality constraints.…”

Section: Related Workmentioning

confidence: 99%

On Cost‐effective Reuse of Components in the Design of Complex Reconfigurable Systems

Aizpurua

Papadopoulos

Muxika

et al. 2017

Quality & Reliability Eng

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Design strategies that benefit from the reuse of system components can reduce costs while maintaining or increasing dependability-we use the term dependability to tie together reliability and availability. D3H2 (aDaptive Dependable Design for systems with Homogeneous and Heterogeneous redundancies) is a methodology that supports the design of complex systems with a focus on reconfiguration and component reuse. D3H2 systematizes the identification of heterogeneous redundancies and optimizes the design of fault detection and reconfiguration mechanisms, by enabling the analysis of design alternatives with respect to dependability and cost. In this paper, we extend D3H2 for application to repairable systems. The method is extended with analysis capabilities allowing dependability assessment of complex reconfigurable systems. Analysed scenarios include time-dependencies between failure events and the corresponding reconfiguration actions. We demonstrate how D3H2 can support decisions about fault detection and reconfiguration that seek to improve dependability while reducing costs via application to a realistic railway case study.A high-level function consists of a set of Main Functions (MF), for example, train operating properly = {traction system OK, signalling system OK, braking system OK, air conditioning control OK, . . . }. Main functions are performed in possibly different Physical Locations (PLs), for example, a single air conditioning control implementation may span a whole train car, or each car compartment in a train car may have its own air conditioning control. A main function consists of a set of subfunctions (SF), for example, input, control and output subfunctions. A subfunction may have multiple implementations (#) to carry out the subfunction, and these are ordered with respect to their priority.

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Section: Related Workmentioning

confidence: 99%

On Cost‐effective Reuse of Components in the Design of Complex Reconfigurable Systems

Aizpurua

Papadopoulos

Muxika

et al. 2017

Quality & Reliability Eng

View full text Add to dashboard Cite

show abstract

“…They perform availability and cost evaluations using Fault Trees and Monte Carlo simulations. Methodological support for characterizing an adaptation model while meeting availability-cost requirements was presented in [8]. For each system component, its implicit redundancies and quality constraints are specified to determine compatible components.…”

Section: Related Workmentioning

confidence: 99%

“…We consider safety and reliability while maintainability and security aspects are outside of the scope of this paper. A common assumption made in dependability analysis is the ideal nature of health monitoring mechanisms ( [6][7][8][9]). This assumption may lead the designer to adopt optimistic decisions which may prove to be inadequately safe.…”

Section: Introductionmentioning

confidence: 99%

Application of the D3H2 Methodology for the Cost-Effective Design of Dependable Systems

Aizpurua

Muxika

Papadopoulos

et al. 2016

Safety

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The use of dedicated components as a means of achieving desirable levels of fault tolerance in a system may result in high costs. A cost effective way of restoring failed functions is to use heterogeneous redundancies: components that, besides performing their primary intended design function, can also restore compatible functions of other components. In this paper, we apply a novel design methodology called D3H2 (aDaptive Dependable Design for systems with Homogeneous and Heterogeneous redundancies) to assist in the systematic identification of heterogeneous redundancies, the design of hardware/software architectures including fault detection and reconfiguration, and the systematic dependability and cost assessments of the system. D3H2 integrates parameter uncertainty and criticality analyses to model inexact failure data in dependability assessment. The application to a railway case study is presented with a focus on analysing different reconfiguration strategies as well as types and levels of redundancies.

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Towards Safety-Awareness and Dynamic Safety Management

Trapp

Schneider

Weiss

2018

2018 14th European Dependable Computing Conference (EDCC)

Self Cite

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Future safety-critical systems will be highly automated or even autonomous and they will dynamically cooperate with other systems as part of a comprehensive ecosystem. This together with increasing utilization of artificial intelligence introduces uncertainties on different levels, which detriment the application of established safety engineering methods and standards. These uncertainties might be tackled by making systems safety-aware and enabling them to manage themselves accordingly. This paper introduces a corresponding conceptual dynamic safety management framework incorporating monitoring facilities and runtime safety-models to create safety-awareness. Based on this, planning and execution of safe system optimizations can be carried out by means of self-adaptation. We illustrate our approach by applying it for the dynamic safety assurance of a single car.

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Engineering Dynamic Adaptation for Achieving Cost-Efficient Resilience in Software-Intensive Embedded Systems

Cited by 6 publications

References 28 publications

On Cost‐effective Reuse of Components in the Design of Complex Reconfigurable Systems

On Cost‐effective Reuse of Components in the Design of Complex Reconfigurable Systems

Application of the D3H2 Methodology for the Cost-Effective Design of Dependable Systems

Towards Safety-Awareness and Dynamic Safety Management

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