Magnetostrictively actuated control flaps for vibration reduction in helicopter rotors—design considerations for implementation
نویسندگان
چکیده
منابع مشابه
development and implementation of an optimized control strategy for induction machine in an electric vehicle
in the area of automotive engineering there is a tendency to more electrification of power train. in this work control of an induction machine for the application of electric vehicle is investigated. through the changing operating point of the machine, adapting the rotor magnetization current seems to be useful to increase the machines efficiency. in the literature there are many approaches wh...
15 صفحه اولHelicopter Vibration Reduction Using Robust Control
This dissertation presents a control law for helicopters to reduce vibration and to increase damping using individual blade control. control synthesis is used to develop a robust controller usable in different operating conditions with different helicopter flight speeds. The control design is applied in simulation to the four-blade BO 105 helicopter rotor, which is equipped with an individual b...
متن کاملHigher-Harmonic-Control Algorithm for Helicopter Vibration Reduction Revisited
The higher-harmonic-control (HHC) algorithm is examined from a control theory perspective. A brief review of the history and variants of HHC is given, followed by a careful development of the algorithm. An analytic convergence and robustness analysis is then performed. Online identification with the adaptive variant of the algorithm is also addressed. A new version of the algorithm, relaxed HHC...
متن کاملHelicopter Performance and Vibration Enhancement by Twist-Actuated Blades
This paper investigates potential improvements that can be accomplished by integral twist-actuated rotor blades regarding helicopter performance and its vibration. The twist deformation is obtained using anisotropic piezocomposite actuators embedded in the composite blade construction. A four-bladed fullyarticulated Active Twist Rotor (ATR) system was built and tested at Langley Transonic Dynam...
متن کاملThe HHC Algorithm for Helicopter Vibration Reduction Revisited
The Higher-Harmonic Control (HHC) algorithm is re-examined from a rigorous control theory-oriented perspective. A brief review of the history and developments of HHC is given, followed by a careful development of the algorithm. The paper proceeds to perform an analytic convergence and robustness analysis. On-line identification with the adaptive variant of the algorithm is also addressed. A new...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Mathematical and Computer Modelling
سال: 2001
ISSN: 0895-7177
DOI: 10.1016/s0895-7177(00)00307-1