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A hybrid transmission scheme for networked control systems.

Yanpeng Guan1, Chen Peng2

  • 1Department of Automation, Shanxi University, Taiyuan, 030006, China.

ISA Transactions
|June 24, 2019
PubMed
Summary

This study introduces a hybrid communication mechanism for networked control systems (NCSs) to address data loss. The new approach ensures system stability by instantly transmitting subsequent data when an event-triggered packet is lost.

Keywords:
Data dropoutsEvent-triggeredNCSsTransmission scheme

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Area of Science:

  • Control Engineering
  • Networked Systems
  • Communication Systems

Background:

  • Event-triggered mechanisms offer efficient resource utilization in Networked Control Systems (NCSs).
  • Data loss in event-triggered NCSs poses challenges due to the internal correlation of consecutively transmitted data.
  • Existing analysis methods struggle when event-triggered data packets are lost.

Purpose of the Study:

  • To propose a robust hybrid communication mechanism for NCSs that effectively handles data loss.
  • To ensure the uniform ultimate boundedness of the system state in the presence of lost event-triggered data.
  • To validate the proposed mechanism's effectiveness and advantages through simulation examples.

Main Methods:

  • Development of a hybrid communication strategy where lost event-triggered measurements trigger instant transmission of subsequent data.
  • Design of a networked controller specifically for NCSs experiencing data loss.
  • Mathematical analysis to guarantee uniform ultimate boundedness of the system state.

Main Results:

  • The proposed hybrid mechanism successfully compensates for lost event-triggered data packets.
  • The developed networked controller ensures system stability (uniform ultimate boundedness) despite data loss.
  • Simulations demonstrate the validity and superior performance of the new approach compared to existing methods.

Conclusions:

  • The hybrid communication mechanism is a viable solution for NCSs facing data loss challenges.
  • The approach enhances the reliability and stability of networked control systems.
  • This work provides a foundation for more resilient NCS designs in practical applications.