Results 221 to 230 of about 14,198 (266)

Flexible Rotor Balancing

1988
Developments which led to modern flexible rotor balancing techniques are described. The theory of flexible rotor balancing is outlined, and the theoretical basis for Modal balancing, and for Influence Coefficient balancing, is presented. In both instances, the publications from which the source material for this section was obtained are identified ...
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Balancing of Flexible Rotors

1984
When discussing flexible rotor balancing from an historical point of view, we can make out three classical development lines, mainly the modal theories developed by Bishop and Federn in England and Germany and the influence coefficient method developed in the USA.
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Control of Flexible Rotors

2009
The goal of this chapter is to discuss the problems that rotor flexibility and hardware limitations introduce in the design of AMB controllers and to present some solution strategies for these problems. Rotor flexibility means that the rotor can have relatively high gain at higher frequencies and this introduces complications in designing controllers ...
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Helicopter Rotor with Flexible Hub

SAE Technical Paper Series, 1965
<div class="htmlview paragraph">The paper discusses an improved control system for a helicopter or VTOL aircraft equipped with a rigid lift rotor integral with a flexible hub.</div> <div class="htmlview paragraph">The proposed method consists in suitably arranging the knuckle joints on the ends of the blade pitch control levers to ...
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Boundary control of a two‐dimensional flexible rotor

International Journal of Adaptive Control and Signal Processing, 2001
AbstractIn this paper, we present the design of boundary controllers for a two‐dimensional, spinning flexible rotor system. Specifically, we develop a model‐based boundary controller which exponentially regulates the rotor's displacement and the angular velocity tracking error, and an adaptive boundary controller which asymptotically achieves the same ...
Nagarkatti, S. P., Dawson, D. M., de Queiroz, M. S., Zhang, F., Costic, B.   +4 more
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Speed regulation of an eccentric rotor with a flexible joint

Proceedings of the 2004 IEEE International Conference on Control Applications, 2004., 2005
This article explores the problem of speed regulation of an unbalanced rotor in gravitational field with a flexible shaft. This problem falls into the category of vibration control of flexible structures subject to nondecaying harmonic disturbances. The experimental device is an eccentric rotor driven by a dc servomotor through a flexible joint. As the
Shang-Teh Wu, Wei-Ming Shen
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Failure Analysis of a Misaligned and Unbalanced Flexible Rotor

Journal of Failure Analysis and Prevention, 2006
Abstract Shaft misalignment and rotor unbalance contribute to the premature failure of many machine components. To understand how these failures occur and quantify the effects, investigators developed a model of a rotating assembly, including a motor, flexible coupling, driveshaft, and bearings.
M. Attia Hili, T. Fakhfakh, M. Haddar
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Vibration characteristic analysis of flexible rotor-bearing system subjected to external combined loads

European Journal of Mechanics, A/Solids, 2022
Qingshan Wang
exaly  

Unbalance position of aeroengine flexible rotor analysis and identification based on dynamic model and deep learning

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2023
Qingyu Zhu, Yulai Zhao, Qingkai Han
exaly  

A real-time coupling model of bearing-rotor system based on semi-flexible body element

International Journal of Mechanical Sciences, 2023
Ke Yan, Shuaijun Ma
exaly