Papers by Aurélien Reysset
Aircraft Engineering and Aerospace Technology, 2015
Purpose -Aerospace actuation systems are currently tending to become more electrical and fluid fr... more Purpose -Aerospace actuation systems are currently tending to become more electrical and fluid free. Methodologies and models already exist for designing the mechanical and electrical components but the actuator housing design is still sketchy. This paper proposes preliminary design models of actuator housing that enable various geometries to be compared without requiring detailed knowledge of the actuator components.
Concurrent Engineering, 2015
This paper is dedicated to the generation of sizing procedures used during the preliminary optima... more This paper is dedicated to the generation of sizing procedures used during the preliminary optimal design of physical parts of mechatronic systems. The knowledge necessary to such design is composed of 2 layers: mechatronic system layer and component layer. Such knowledge can be represented by algebraic equations directly or by the use of meta-modelling techniques. Constraint networks and graphs theory are used here to represent and order the constraints and the links between those algebraic models in order to obtain a wellposed optimization problem. The selected or developed algorithms are finally illustrated with typical problems of component selection.
Chaînes de transmission de puissance mécatroniques - Modèles d'estimation
Proceedings of the 7 International Modelica Conference Como, Italy, 2009
This article deals with a methodology for a computer-aided design of electromechanical actuators ... more This article deals with a methodology for a computer-aided design of electromechanical actuators from the preliminary design of components to the detail design of the electrical motor. The developed library of components for the simulation takes advantage of the non-causal and object oriented characteristics of the Modelica language. The capabilities of the Modelica language and the LMS.Imagine.Lab AMESim or Dymola Platforms are strongly used in order to build a fully integrated process to design and size the different component of the final actuator. The proposed approach is illustrated with the sizing of a flight control actuator.
From Airframer Requirements to Detailed Technical Specification of Electromechanical Actuators Aided by Knowledge-Based Methods
SAE Technical Paper Series, 2013
ABSTRACT Recent trends towards lighter and more efficient commercial aircraft have motivated airf... more ABSTRACT Recent trends towards lighter and more efficient commercial aircraft have motivated airframers to consider the use of electromechanical actuators EMA as the primary means of power for aircraft flight control systems. The transition from state-of-the-art hydraulic actuation to new electromechanical technologies poses a great challenge to both airframers and system suppliers for the correct and complete definition of new requirements. Transient effects such as electric motor overheating and inertial loads, previously not present or irrelevant for hydraulic actuators, now have to be taken into account. A knowledge-based environment containing design drivers for electromechanical components is combined with a validation method in order to aid the systems engineer to accomplish such task. This approach offers the potential to guarantee that all requirements are covered by a new technology, and that they are complete and consistent. In addition, analyzing representative mission profiles and extracting relevant flight data aid in the identification of active design drivers and speeds up requirement definition for the technology under consideration. These concepts are illustrated with a case study of a short-range aircraft's aileron EMA. Methods and tools described herein are being developed within the framework of the European research project Actuation 2015 which aims at the standardization of EMA components for aerospace applications.
Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2013
This paper presents a methodology for the optimal preliminary design of electro-mechanical actuat... more This paper presents a methodology for the optimal preliminary design of electro-mechanical actuators. The main design drivers, design parameters and degrees of freedom that can be used for preliminary design and optimization of EMA are described. The different types of models used for model based design (estimation, simulation, evaluation and meta-model), and their associations are presented. The process preferred for its effectiveness in terms of flexibility and computational time is then described and illustrated with the example of a spoiler electromechanical actuator. The proposed approach, based on meta-models obtained using the surfaces response methods and scaling laws models, is used to explore the influence of anchorage points and transmission ratio on the different design constraints and the overall mass of the actuator.
The aim of the current paper is to propose inno-vative standard tools and models for new elec-tro... more The aim of the current paper is to propose inno-vative standard tools and models for new elec-tromechanical actuators (EMAs) specifications release. This objective is motivated by a strong demand of the aeronautic industry especially to cut down development time and cost. The paper highlights new design drivers and limitations induced by such a technology and the challenges to rise. It explains how to take care of those imperfections, early, at requirements document writing phase, and how to integrate and test it into the aircraft loop. A Matlab-Simulink library, based on presented model, has been applied successfully on various examples of EMAs for primary flight control of an aircraft. It can be used as a help for specifications severity comparison and mission profile adaptation or data extraction.
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Papers by Aurélien Reysset