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An event-triggered synchronization strategy for high-precise clock systems with switching topologies.

Hui Zhao1, Xuewu Dai2, Yuan Zhao3

  • 1School of Artificial Intelligence, Shenyang University of Technology, Shenyang, 110870, China.

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This study introduces an event-triggered synchronization strategy for high-precision clock systems in wireless sensor networks (WSN). The method ensures reliable clock synchronization with reduced communication load, even in networks with changing topologies.

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Area of Science:

  • Computer Science
  • Electrical Engineering
  • Network Engineering

Background:

  • Clock synchronization is crucial for the reliability of wireless sensor networks (WSN).
  • High-precision clock systems in WSN face challenges with switching topologies and communication burden.
  • Existing methods may not efficiently handle dynamic network changes and precise timing requirements.

Purpose of the Study:

  • To propose an event-triggered synchronization strategy for high-precision clock systems in WSN with switching topologies.
  • To reduce the communication burden associated with clock synchronization.
  • To achieve reliable clock synchronization by addressing clock offset and skew.

Main Methods:

  • Investigated clock system models based on offset and skew concepts.
  • Developed an event-triggered strategy tailored for high-precision clock systems and switching topologies.
  • Presented a synchronization strategy ensuring convergence of clock offset and skew.
  • Formulated clock synchronization as an optimization problem to determine optimal weighting matrices and controller gains.

Main Results:

  • Obtained a sufficient condition for the synchronization of high-precision clock systems with switching topologies.
  • Demonstrated the convergence of clock offset and skew through the proposed strategy.
  • Successfully calculated optimal event-triggered weighting matrices and controller gains via optimization.
  • Validated the performance of the proposed clock synchronization method through simulations.

Conclusions:

  • The proposed event-triggered synchronization strategy effectively achieves clock synchronization in WSN with high-precision clock systems and switching topologies.
  • The method offers a reduced communication burden compared to traditional approaches.
  • The findings provide a robust solution for enhancing the reliability of WSN through precise clock synchronization.