Network load minimisation design for dual-rate Internet-based control systems

Y. Li, S. H. Yang, Z. Zhang, Q. G. Wang

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


This study presents a design method for Internet-based control systems in a dual-rate configuration to achieve load minimisation and dynamic performance specifications. It avoids the complexity of large-scale system design by focusing on individual control systems. In the dual-rate configuration, the plant under control is first stabilised by a local controller with a high sampling rate. The remote proportional integral derivative (PID) controller, which regulates the output according to the desirable reference, adopts a low sampling rate to reduce load on the network. The upper bound of the remote PID controller's sampling time which meets the requirement on control performance is derived and a simple tuning method for the remote PID controller is presented. Simulation and real-time examples are provided for illustration.

Original languageEnglish
Pages (from-to)197-205
Number of pages9
JournalIET Control Theory and Applications
Issue number2
Publication statusPublished - Feb 2010
Externally publishedYes

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Human-Computer Interaction
  • Computer Science Applications
  • Control and Optimization
  • Electrical and Electronic Engineering


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