Two-Degree-of-Freedom Active Vibration Control of a Prototyped “Smart” Rotor

Journal article (2010)
Department
Delft Center for Systems and Control (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: © 2010 The Author(s); IEEE
DOI: https://doi.org/doi:10.1109/TCST.2010.2051810
Wind energy Load alleviation Fixed-structure feedforward Trailing-edge flaps
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Published Date

01-05-2010

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Source:

IEEE Transactions on Control Systems Technology, (99), 2010

ISSN:

1063-6536

Faculty

Mechanical, Maritime and Materials Engineering

Department

Delft Center for Systems and Control

Abstract

This paper studies the load reduction potential of a prototyped “smart” rotor. This is, a rotor where the blades are equipped with a number of control devices that locally change the lift profile on the blade, combined with appropriate sensors and controllers. Experimental models, using dedicated system identification techniques, are developed of a scaled rotating two-bladed “smart” rotor of which each blade is equipped with trailing-edge flaps and strain sensors. A feedback controller based on -loop shaping combined with a fixed-structure feedforward control are designed that minimizes the root bending moment in the flapping direction of the two blades. We evaluated the performance using a number of different realistic load scenarios. We show that with appropriate control techniques the variance of the load signals can be reduced up to 90%.