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Feedback control systems with cyber fault-management mechanisms: Modeling and tradeoff analysis for simple examples

Abstract:

The impacts of cyber-fault resolution techniques on the dynamics of feedback control systems are explored, using simple case studies. Specifically, for a three-state DC motor model, simple control schemes implemented using embedded microcontrollers are modeled as being subject to freeze faults, which are resolved using watchdog-timer technologies. Simulations are undertaken to characterize the impacts of the faults and fault-resolution mechanisms. Also, a formal analysis of freeze faults and fault resolution is undertaken for a singlepole plant with proportional control. It is found that watchdog timers can reduce severe impacts of faults occurring during the control system's transient, but may increase susceptibility to other faults.

Año de publicación:

2017

Keywords:

    Fuente:

    scopusscopus

    Tipo de documento:

    Conference Object

    Estado:

    Acceso restringido

    Áreas de conocimiento:

    • Sistema de control
    • Teoría de control

    Áreas temáticas:

    • Ciencias de la computación
    • Métodos informáticos especiales
    • Física aplicada

    Contribuidores:

    Xue M.Xue M.
    Hahn A.Hahn A.
    Sandip RoySandip Roy