158 research outputs found
Two Degree of Freedom Controller Design by AGTM\AGMP Matching Method for Time Delay Systems
No full textAbstractThis paper proposes the design of a general Two Degree Of Freedom (2-DOF) controller for time delay systems using a novel method which combines model order reduction, approximate model matching concepts as well as optimization techniques. The desired spectrum is embodied in the form of a transfer function which can be constructed from a set of time domain specifications. The problem of finding the parameters of the 2-DOF controller is formulated as that of obtaining the solution of a set of non-homogeneous linear equations. These set of non-homogeneous linear equations is obtained by using Approximate Generalized Time Moments (AGTM) matching concept, where closed loop response at certain frequency points in s-plane is matched with that of the desired model response. Using genetic algorithm optimum selection of frequency points (expansion points) in s-plane are obtained, which results in an optimum solution of controller parameters. This leads to a high degree of matching of the closed loop response with that of the desired model. The proposed method not only ensures the stability of the closed loop system with a 2-DOF controller but also satisfies the required performance criteria. The developed method does not pose any restriction on either the order of the model or on the structure/order of the controller transfer function. Moreover, this method is computationally simple and easy to implement. Simulation results demonstrate the effectiveness of the proposed method
Enhancing fault ride capability in DFIG based wind farm using supplementary rotor controller and dynamic voltage restorer
No full textLabVIEW based real time implementation of Fractional Order PID controller for a magnetic levitation system
No full textDesign of Decentralized Two Loop Cascade Control Strategy for 3-Axis Platform Stabilization
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GA optimized design of stator voltage oriented integral sliding mode control for DFIG based wind energy conversion system
No full textAn evaluation of spatial mapping of indoor environment based on point cloud registration using Kinect sensor
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