Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
OPTIMAL PRELIMINARY SIZING AND ANALYSIS OF ELECTROMECHANICAL ACTUATOR WITH BOND GRAPH
Submission Author:
Caio Paes , Buscando endereço... , Brazil
Co-Authors:
Caio Paes, Luiz Carlos Góes
Presenter: Caio Paes
doi://10.26678/ABCM.COBEM2021.COB2021-0468
Abstract
The aeronautics industry has always been looking for innovations capable of providing reductions in operational costs and, more recently, it started the search for greener solutions. The major contributor to the operational costs and gas emissions is the consumption of aviation fuel. However, maintenance activities also play an important role in the composition of operational expenses. Therefore, solutions capable of providing a higher overall energetic efficiency while requiring less maintenance are of utmost importance for aircraft manufacturers. In this context, efforts to substitute conventional hydro-mechanical systems for electric systems are becoming increasingly common, originating the concept of more-electric aircraft. In the field of flight control, electromechanical actuators have been studied as a solution to replace conventional actuators, specially for the actuation of secondary control surfaces. Yet, research is still required in order to assess the performance characteristics of an electromechanical actuator and, more important, to allow the comparison with the conventional solution in terms of weight and power demand. It is also important to guarantee the correct integration between aircraft and system by evaluating its behavior when operating under failure conditions. This work aims to allow the analysis of such characteristics in a preliminary sizing context so that the means to evaluating the actuator's power demand are available. In order to do so, the development of two different tools that should aid the decision making process in the electromechanical actuator viability studies is proposed. The first tool consists on an actuator preliminary sizing tool which allows both demanded power and actuator mass estimation based on the project requirements and also allows observation of the actuator's sensitivity to design variations. Furthermore, modeling of the actuator is addressed in order to validate the preliminary sizing through simulations. The proposed model is such that operation under failure conditions can be taken into account, allowing the evaluation of its impacts on the demanded power and integration with the aircraft's supply network. This model is developed by using the bond graph method and is implemented in a computational environment, originating the second tool proposed by this work.
Keywords
Bond Graph, electromechanical actuator, Optimization, Modeling and Simulation
