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The paper deals with parametrization of shaping compensators (filters) ensuring the Bode's ideal control loop shape for an exactly defined class of process models. The class of essentially monotone fractional-order processes is considered. The fractional integrator is used as the optimal open loop reference model. Several aspects of shaping filter implementation on given frequency band are discussed...
A systematical design method for robust integer order proportional-integral-derivative (IOPID) controller with an iso-damping property was suggested in. In this paper, two auto-tuning methods of fractional order proportional integral (FOPI) and fractional order [proportional integral] (FO[PI]) controllers with iso-damping property for a class of unknown, stable and minimum phase plants are designed...
This paper deals with the implementation of an auto-tuning method for fractional order PIλDμ controllers using a PLC. The purpose of the auto-tuning method proposed is to ensure a robust performance of the controlled system with respect to plant gain variations. Specifications of gain crossover frequency and phase margin are fulfilled, together with the iso-damping property of the time response of...
This article deals with the problem of the reduction of structural vibrations with isodamping property. The proposed methodology is based on: a contour defined in the Nichols plane and significant of the damping ratio of the closed-loop response and on a robust control method that uses fractional order integration. The methodology is applied to an aircraft wing model made with a beam and a tank whose...
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