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CRA based control of fractional order systems subject to control signal constraint

Tabatabaei, M ; Sharif University of Technology

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  1. Type of Document: Article
  2. Abstract:
  3. An approach is proposed to control transient response of fractional order systems with maximum permissible control signal. This goal is achieved using a newly suggested characteristic ratio assignment method. Based on the proposed method, the generalized time constant τ and the characteristic ratios including their pattern, an adjustable parameter β, and the product of two successive characteristic ratios ρ are determined such that predefined level of overshoot and time specification of closed loop step response are obtained while the control signal is confined to a pre assigned maximum magnitude. The raised issue is solved by defining an optimization problem in which the design parameters are τ, β, and ρ. Numerical simulations results are provided to illustrated performance of the proposed method
  4. Keywords:
  5. Characteristic ratio assignment ; Control signal constraint ; Fractional order systems ; Adjustable parameters ; Characteristic ratio ; Closed loops ; Control signal ; Design parameters ; Fractional-order systems ; Optimization problems ; Time constants ; Algebra ; Numerical methods
  6. Source: International Conference on Control, Automation and Systems ; 2011 , Pages 268-272 ; 15987833 (ISSN) ; 9781457708350 (ISBN)
  7. URL: http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=6106431&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D6106431