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Distribution reliability in electrical power systems is critical for ensuring an uninterrupted power supply to consumers at minimal cost. According to IEEE Standard Terms, reliability is the probability that a device will function without failure over a specified time period or amount of usage. For electric power distribution, this translates to maintaining continuous power supply and addressing customer concerns over power outages. Several indices, as defined by IEEE Standard 1366-2012, are...
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Frequent Asynchronous Switching of Networked Switched Systems Under Event-Triggered Fault-Tolerant Control and DoS

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    This study presents a resilient event-triggered fault-tolerant control strategy for networked switched systems facing denial-of-service (DoS) attacks and actuator faults. The method ensures global exponential stability and H-infinity performance despite complex timing issues.

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    Area of Science:

    • Control Systems Engineering
    • Networked Systems Analysis
    • Cyber-Physical Systems Security

    Background:

    • Networked switched systems face stability challenges due to frequent switching, DoS attacks, delays, and actuator faults.
    • Existing control frameworks often fail due to timing mismatches caused by these combined factors.
    • Event-triggered mechanisms (ETM) can be complex to implement under asynchronous conditions.

    Purpose of the Study:

    • To develop a resilient event-triggered fault-tolerant control strategy for networked switched systems.
    • To address multisource asynchrony caused by DoS attacks, delays, and actuator faults.
    • To ensure global exponential stability and H-infinity performance in the presence of these disturbances.

    Main Methods:

    • A hybrid ETM combining time-triggering and event-triggering conditions is proposed.
    • A switched Lyapunov function is constructed to analyze asynchronous behaviors and DoS disruptions.
    • A resilient codesign strategy jointly designs ETM parameters and fault-tolerant control gains.

    Main Results:

    • The proposed framework unifies the analysis of asynchronous phenomena and DoS-induced disruptions.
    • Global exponential stability with H-infinity performance is guaranteed despite delays, faults, and DoS attacks.
    • The method's effectiveness is validated using a quarter-vehicle suspension system.

    Conclusions:

    • The developed strategy effectively handles complex timing mismatches in networked switched systems.
    • The unified analytical framework provides robust fault tolerance and stability guarantees.
    • This research offers a significant advancement in securing networked systems against cyber-physical threats.