Output Tracking Control for Fractional-Order Positive Switched Systems with Input Time Delay

R. Sakthivel, S. Mohanapriya, C. K. Ahn, H. R. Karimi

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)


The objective of this brief is to focus on the problem of output tracking control for a class of fractional-order positive switched systems via an observer-based controller method that combines equivalent-input-disturbance approach and Smith predictor. By employing Lyapunov theory together with average dwell-time approach, a new exponential stability criterion is derived in terms of linear matrix inequalities for the resulting closed-loop system. Based on the derived delay-dependent criterion, a design method of the proposed controller is then presented. The designed controller can assure that the output signals of the system trace the specified reference signals within the preferred neighborhood of the equilibrium. Furthermore, the solvability inclusive conditions for the proposed controller design of the considered system are established according to the state being available or not. Numerical simulation results are provided to demonstrate the strong disturbance rejection capability and the superiority of the proposed control design method over some existing ones.

Original languageEnglish
Article number8468073
Pages (from-to)1013-1017
Number of pages5
JournalIEEE Transactions on Circuits and Systems II: Express Briefs
Issue number6
Publication statusPublished - 2019 Jun


  • Fractional-order systems
  • Smith predictor
  • equivalent-input-disturbance
  • output tracking control
  • positive switched systems

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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