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Towards a Stepwise Variability Management Process for Complex Systems: A Robotics Perspective

Author

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  • Alex Lotz

    (University of Applied Sciences Ulm, Ulm, Germany)

  • Juan F. Inglés-Romero

    (Universidad Politécnica de Cartagena, Cartagena, Spain)

  • Dennis Stampfer

    (University of Applied Sciences Ulm, Ulm, Germany)

  • Matthias Lutz

    (University of Applied Sciences Ulm, Ulm, Germany)

  • Cristina Vicente-Chicote

    (QSEG, Universidad de Extremadura, Caceres, Spain)

  • Christian Schlegel

    (University of Applied Sciences Ulm, Ulm, Germany)

Abstract

Complex systems are executed in environments with a huge number of potential situations and contingencies, therefore a mechanism is required to express dynamic variability at design-time that can be efficiently resolved in the application at run-time based on the then available information. We present an approach for dynamic variability modeling and its exploitation at run-time. It supports different developer roles and allows the separation of two different kinds of dynamic variability at design-time: (i) variability related to the system operation, and (ii) variability associated with QoS. The former provides robustness to contingencies, maintaining a high success rate in task fulfillment. The latter focuses on the quality of the application execution (defined in terms of non-functional properties like safety or task efficiency) under changing situations and limited resources. The authors also discuss different alternatives for the run-time integration of the two variability management mechanisms, and show real-world robotic examples to illustrate them.

Suggested Citation

  • Alex Lotz & Juan F. Inglés-Romero & Dennis Stampfer & Matthias Lutz & Cristina Vicente-Chicote & Christian Schlegel, 2014. "Towards a Stepwise Variability Management Process for Complex Systems: A Robotics Perspective," International Journal of Information System Modeling and Design (IJISMD), IGI Global, vol. 5(3), pages 55-74, July.
    • Handle: RePEc:igg:jismd0:v:5:y:2014:i:3:p:55-74
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