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Co-design of dynamic event-triggered mechanism and observer-based control for networked systems under hybrid cyber attacks: A GA-LMI-based approach

  • 0College of Artificial Intelligence, Anhui University, Hefei, 230026, China.
Isa Transactions +

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January 18, 2026

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January 18, 2026

View abstract on PubMed

Summary

This summary is machine-generated.

This study introduces a new co-design for controllers and dynamic event-triggered mechanisms (DETM) in networked systems facing hybrid cyber attacks. The method optimizes performance and reduces network load effectively.

Area Of Science

  • Control Systems Engineering
  • Cybersecurity
  • Networked Systems

Background

  • Networked control systems (NCS) are vulnerable to hybrid cyber attacks like false data injection and replay attacks.
  • Dynamic Event-Triggered Mechanisms (DETM) can reduce network load but require careful parameter selection.
  • Existing co-design methods may lack flexibility due to predefined DETM parameters.

Purpose Of The Study

  • To develop a robust co-design framework for observer-based controllers and DETMs in NCS under hybrid cyber attacks.
  • To enhance system stability and H-infinity performance while minimizing network communication.
  • To propose a flexible co-design approach that jointly optimizes controller and DETM parameters.

Main Methods

  • Modeling hybrid cyber attacks using independent Bernoulli processes.
  • Deriving nonlinear matrix inequalities for stability and H-infinity performance analysis.
  • Employing variable transformation and matrix decomposition for controller gain decoupling.
  • Developing a Genetic Algorithm-Linear Matrix Inequality (GA-LMI) based co-design algorithm.

Main Results

  • The proposed GA-LMI co-design method effectively optimizes both controller and DETM parameters.
  • Achieved superior H-infinity performance compared to existing methods under hybrid cyber attacks.
  • Demonstrated reduced network load through the dynamic event-triggered mechanism.
  • Validated effectiveness and low conservatism on a buck DC-DC converter system.

Conclusions

  • The GA-LMI based co-design framework offers a flexible and effective solution for NCS security.
  • The approach ensures system stability and performance against sophisticated cyber threats.
  • This methodology provides a practical strategy for securing NCS with limited communication bandwidth.

Keywords:

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