Synthesis of Fractional-order QFT Controllers using Interval Constraint Satisfaction Technique
نویسندگان
چکیده
A method is proposed for automatic synthesis of quantitative feedback theory (QFT) based robust fractional-order controllers. The problem of QFT controller synthesis is formulated as an interval constraint satisfaction problem, where the nonlinear and non-convex robust stability and tracking bound specifications form the constraints. The problem is solved using the branch and prune algorithm. Among all the obtained feasible controllers, the one with least high frequency gain is selected for control. The method is demonstrated to design a PD and a generic fractional-order controller for a DC motor plant transfer function having parametric uncertainties.
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