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Periodic controllers for vibration reduction using actively twisted blades

Published online by Cambridge University Press:  08 July 2016

Claudio Brillante ,
Marco Morandini  and
Paolo Mantegazza
Claudio Brillante
Affiliation:
Dipartimento di Scienze e Tecnologie Aerospaziali, Politecnico di Milano, Milano, Italy
Marco Morandini*
Affiliation:
Dipartimento di Scienze e Tecnologie Aerospaziali, Politecnico di Milano, Milano, Italy
Paolo Mantegazza
Affiliation:
Dipartimento di Scienze e Tecnologie Aerospaziali, Politecnico di Milano, Milano, Italy
*
[email protected]
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Abstract

This paper compares two periodic control methods, the optimal H 2 and the periodic static output feedback (POF), to reduce the helicopter rotor vibrations. Actively twisted blades with Macro-Fibre Composite (MFC) piezoelectric actuators are used. The design model is based on a simplified aerodynamic model and on a multi-body model of the Bo 105 isolated rotor with the original blades replaced by actively twisted ones. The performance of the two controllers in alleviating hub loads is verified with improved simulations based on a free-wake model.

Keywords

Active twist rotorperiodic controlvibration controlfree wake
Type
Research Article
Information
The Aeronautical Journal , Volume 120 , Issue 1233 , November 2016 , pp. 1763 - 1784
Copyright
Copyright © Royal Aeronautical Society 2016 

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