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Model-Aided Design of a High-Performance Fly-by-Wire Actuator, Based on a Global Modelling of the Actuation System using Bond-graphs

Abstract : In order to introduce new functions in helicopter flight controls, it is necessary to increase the bandwidths of their actuators. A realistic modelling of the entire actuating system, taking into account its power limitations and its energy consumption, as well as the improvement of the existing sealing and guiding device technologies are the two main challenges to reach the desired high frequency without reducing dramatically the actuator lifespan. To support this new development, this work is organized in three parts. A first part presents the state of the art of the helicopter flight controls. A generic actuator architecture is proposed as well as the associated terminology. A second part deals with the development of a detailed knowledge-model using the Bond-graph formalism for the actuating system. A particular effort is made to standardize the components and their interfaces in an object-oriented approach. The last part deals with the sealing and guiding devices of flight control cylinders. Given the objective of using fluid bearings, the various ways of generating a normal force within a fluid film are analyzed. Then, a more detailed study of the hydrostatic thrust bearings and the conical hybrid bearings is then carried out taking into account the constraints specific to aeronautics. All the knowledge acquired is applied to a concrete case of development, aided by the models, of high frequency actuators for the active control of a rotor.
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https://hal.archives-ouvertes.fr/tel-01718102
Contributor : Clément Coïc <>
Submitted on : Tuesday, February 27, 2018 - 10:21:30 AM
Last modification on : Wednesday, June 24, 2020 - 4:18:54 PM
Long-term archiving on: : Monday, May 28, 2018 - 12:56:59 PM

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  • HAL Id : tel-01718102, version 1

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Clément Coïc. Model-Aided Design of a High-Performance Fly-by-Wire Actuator, Based on a Global Modelling of the Actuation System using Bond-graphs. Fluids mechanics [physics.class-ph]. INSA Toulouse, 2016. English. ⟨tel-01718102⟩

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