Regional pole placement with saturated control for DC-DC buck converter through Hardware-in-the-Loop

Abdellah Benzaouia, Hisham M. Soliman, Ashraf Saleem*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (SciVal)


In this paper, the problem of robust stability and tracking of saturated control systems for buck DC-DC converters is considered. Linear Matrix Inequalities (LMIs) are used to insert the constraints in the design phase while imposing positivity in the closed-loop state. The control objective is to design a control law for the converter that limit duty ratio between 0 and 1. This will allow the system to switch between two topologies in the continuous conduction mode (CCM), to achieve a tracking reference condition. This has been developed using uncertain saturated control and regional pole placement techniques. The proposed controller is applied to a real DC-DC buck converter through a Hardware-In-the-Loop (HIL) test system. Experimental and simulation results show the effectiveness and the success of the proposed controller in tracking a reference voltage with limiting the duty ratio between 0 and 1. Results also show that the proposed controller performed better than the conventional one.

Original languageEnglish
Pages (from-to)1041-1052
Number of pages12
JournalTransactions of the Institute of Measurement and Control
Issue number9
Publication statusPublished - Sept 1 2016


  • Buck converter
  • HIL simulation
  • LMI
  • pole placement
  • saturated systems
  • uncertain systems

ASJC Scopus subject areas

  • Instrumentation


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