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  • 1.
    Forsberg, Håkan
    et al.
    Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
    Lundqvist, Kristina
    Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
    Ekstrand, Fredrik
    Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
    Otterskog, Magnus
    Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
    Early Results and Ideas for Enhancements of the Master of Engineering Programme in Dependable Aerospace Systems2017In: The 6th Development Conference for Swedish Engineering USIU2017, 2017Conference paper (Refereed)
    Abstract [en]

    The five-year Master of Engineering Programme in Dependable Aerospace Systems, with dependability as its silver thread, started at Mälardalen University (MDH) in 2015. This paper presents selected ideas behind the creation of the programme, together with some preliminary analysis of current results and suggested enhancements for the programme’s fourth and fifth years.

  • 2.
    Forsberg, Håkan
    et al.
    Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
    Lundqvist, Kristina
    Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
    Forsberg, Kristina
    Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
    Methods for Enhancement of a Master of Engineering Programme2019Conference paper (Refereed)
    Abstract [en]

    This paper describes methods we used to improve our Master of Engineering programme in Dependable Aerospace Systems together with the industry. The target audience is mainly programme coordinators/managers who are in the process to develop their programmes for future demands. The two main questions we address are: Q1 – How do we ensure a good progression within a programme to ensure the industry’s current and future needs in engineering skills? and Q2 – How do we ensure students become acquainted with research during their studies? The results indicate that our suggested method to analyse programme progression through subject abilities supports developer of engineering programmes and that our approach to undergraduate research opportunities is a way forward to introduce students to research early.

  • 3.
    Forsberg, Håkan
    et al.
    Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
    Schwierz, Andreas
    Technische Hochschule Ingolstadt, Germany.
    Lundqvist, Kristina
    Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
    Assurance Strategy for New Computing Platforms in Safety-Critical Avionics2019In: Aerospace Technology Congress 2019 FT2019, Stockholm, Sweden, 2019, p. 137-144Conference paper (Refereed)
    Abstract [en]

    An assurance strategy for new computing platforms in safety-critical avionics has to be flexible and take into account different types of commercial-of-the-shelf (COTS) hardware technologies. Completely new COTS technologies are already being introduced and successfully used in other domains. Good examples are heterogeneous platforms, hardware-based machine learning and approximate computing. Current avionics certification guidance material cannot cope with next generation of devices. We suggest using the generic assurance approach of the Overarching Properties (OPs) together with assurance cases to argument that COTS assurance objectives are met and to achieve the flexibility required for future computing platforms. We introduce a novel assurance cased-based OP approach in [1] and refine the work into a framework in [2]. Within this framework we are able to integrate COTS technology specific assurance objectives using a five-step process. In this paper, we show through some representative examples of emerging computing platforms that our strategy is a way forward for new platforms in safety-critical avionics.

  • 4.
    Schwierz, A.
    et al.
    Research Center: Competence Field Aviation, Technische Hochschule Ingolstadt, Germany.
    Forsberg, Håkan
    Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
    Assurance Benefits of ISO 26262 Compliant Microcontrollers for Safety-Critical Avionics2018In: / [ed] Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Springer Verlag , 2018, p. 27-41Conference paper (Refereed)
    Abstract [en]

    The usage of complex Microcontroller Units (MCUs) in avionics systems constitutes a challenge in assuring their safety. They are not always developed according to the assurance requirements accepted by the aerospace industry. These Commercial off-the-shelf (COTS) hardware components usually target other domains like the telecommunication branch, because of the volume of sales and reduced liability. In the last years MCUs developed in compliance to the ISO 26262 have been released on the market for safety-related automotive applications. The avionics market could profit taking credit for some of the activities conducted in developing these MCUs. In this paper we present evaluation results based on comparing assurance activities from ISO 26262 that could be considered for compliance to relevant assurance guidance for COTS MCU in avionics. 

  • 5.
    Schwierz, Andreas
    et al.
    Technische Hochschule Ingolstadt, Germany.
    Forsberg, Håkan
    Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
    Assurance Case to Structure COTS Hardware Component Assurance for Safety-Critical Avionics2018In: 37th Digital Avionics Systems Conference DASC'37, 2018, Vol. 8569774Conference paper (Refereed)
    Abstract [en]

    In every avionics system, Commercial off-the-shelf (COTS) components play an important role by enabling more complex functions. Even in safety-critical systems, COTS hardware components are ubiquitous nowadays. Since the avionics manufacturer do not develop the COTS components themselves, traditional avionics Development Assurance (DA) methods cannot be used. Instead other assurance strategies are used. The problem is that the complexity of the COTS components continuously increase and that several different types COTS components exist, each requiring different assurance strategies. This article includes a literature review over Certification Authority (CA) materials and research reports over COTS hardware components certification related documents since the early 1990s. We then contribute by an approach that can structure this material to provide an overview on COTS assurance methods or activities through an assurance case. The early results show that assurance cases are a possible way to argument COTS assurance and that these cases reveal interconnections between the assurance methods and as such contribute to the overall goal of increased confidence in using COTS components.

  • 6.
    Schwierz, Andreas
    et al.
    Tech Hsch Ingolstadt , Germany..
    Forsberg, Håkan
    Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
    Design Assurance Evaluation of Microcontrollers for safety critical Avionics2017In: 2017 IEEE/AIAA 36TH DIGITAL AVIONICS SYSTEMS CONFERENCE (DASC), IEEE , 2017Conference paper (Refereed)
    Abstract [en]

    Dealing with Commercial off-the-shelf (COTS) components is a daily business for avionic system manufacturers. They are necessary ingredients for hardware designs, but are not built in accordance with the avionics consensus standard DO-254 for Airborne Electronic Hardware (AEH) design. Especially for complex COTS hardware components used in safety critical AEH, like Microcontroller Units (MCUs), additional assurance activities have to be performed. All of them together shall form a convincing confident, that the hardware is safe in its intended operation environment. The focus of DO-254 is one approach called Design Assurance (DA). Its aim is to reduce design errors by adherence of prescribed process objectives for the entire design life cycle. The effort for certain COTS assurance activities could be reduced if it is possible to demonstrate, that the COTS design process is based on similar effective design process guidelines to minimize desgin errors. In the last years, semiconductor manufacturers released safety MCUs in compliance to the ISO 26262 standard, dedicated for the development of functional safe automotive systems. These products are COTS components in the sense of avionics, but they are also developed according to a process that focuses on reduction of design errors. In this paper an evaluation is performed to figure out if the ISO 26262 prescribes a similar DA approach as the DO-254, in order to reduce the COTS assurance effort for coming avionic systems.

  • 7.
    Sundell, Johan
    et al.
    Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
    Torkar, Richard
    Chalmers University of Technology, Sweden.
    Lundqvist, Kristina
    Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
    Forsberg, Håkan
    Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
    Prediction of Undetected Faults in Safety-Critical Software2019In: 12th IEEE International Conference on Software Testing, Verification and Validation Workshops (ICSTW 2019), Xi'an, China, 2019, p. 296-304Conference paper (Refereed)
    Abstract [en]

    Safety-critical software systems need to meet exceptionally strict standards in terms of dependability. Best practice to achieve this is to follow and develop the software according to domain specific standards. These standards give guidelines on development and testing activities. The challenge is that even if you follow the steps of the appropriate standard you have no quantification of the amount of faults potentially still lingering in the system. This paper presents a way to statistically estimate the amount of undetected faults, based on test results.

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