Robust H control of single input-delay systems based on sequential sub-predictors

Majdeddin Najafi, Farid Sheikholeslam, Qing Guo Wang, Saeed Hosseinnia

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


This study presents an approach to the H control of linear input-delay systems. First, an H state predictor is introduced for dead-time systems with disturbance input and measurable outputs. The author's proposed method focuses on optimisation of the disturbance propagation in sequential sub-predictors (SSP). Each of the predictors is employed to forecast the state for one portion of the delay. The H performance of the prediction error can be improved by increasing the number of predictors. Consequently, an H controller is designed for the standard H problem of dead-time systems using SSP. More importantly, the SSP method is extended to the robust H control in presence of uncertainties. Some examples are given to illustrate the effectiveness of proposed method.

Original languageEnglish
Pages (from-to)1175-1184
Number of pages10
JournalIET Control Theory and Applications
Issue number13
Publication statusPublished - 2014
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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