Author: "Bertran Albertí, Eduardo" - Searchworks@Jio Institute Digital Library Search Results

Author: Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. CSC - Components and Systems for Communications Research Group, Bertran Albertí, Eduardo, Tercero Chulián, Paula, Sanchez Cerda, Alex, Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. CSC - Components and Systems for Communications Research Group, Bertran Albertí, Eduardo, Tercero Chulián, Paula, and Sanchez Cerda, Alex
Abstract: This paper is deposited under the Creative Commons Attribution Non-commercial International Licence 4.0 (CC BY-NC 4.0, and any reuse is allowed in accordance with the terms outlined by the licence. To reuse the AAM for commercial purposes, permission should be sought by contacting permissions@emeraldinsight.com. For the sake of clarity, commercial usage would be considered as, but not limited to: o Copying or downloading AAMs for further distribution for a fee; o Any use of the AAM in conjunction with advertising; o Any use of the AAM by for promotional purposes by for-profit organisations; o Any use that would confer monetary reward, commercial gain or commercial exploitation., This paper aims to overcome the main obstacle to compare the merits of the different control strategies for fixed-wing unmanned aerial vehicles (UAVs) to assess autopilot performances. Up to now, the published studies of control strategies have been carried out over disperse models, thus being complicated, if not impossible, to compare the merits of each proposal. The authors present a worked benchmark for autopilots studies, consisting of generalized models obtained by merging UAVs’ parameters gathered from selected literature (journals) with other parameters directly obtained by the authors to include some relevant UAVs whose models are not provided in the literature. To obtain them it has been used a dedicated software (from U.S. Air Force).The proposed models have been constructed by averaging both the main aircraft defining parameters (model derivatives) and pole-zero locations of longitudinal transfer functions. The suitability of the used methodologies has been checked from their capability to fit the short period and the phugoid modes. Previous analytical model arrangement has been required to match a uniform set of parameters, as the inner state variables are neither the same along the different published models nor between the additional models the authors have here contributed. Besides, moving models between the space state representation and transfer function is not just a simple averaging process, as neither the parameters nor the model orders are the same in the different published works. So, the junction of the models to a common set of parameters requires some residual’s computation and transient responses assessment (even Fourier analysis has been included to preserve the dominance of the phugoid) to keep the main properties of the models. The least mean squares technique has been used to have better fittings between SISO model parameters with state–space ones.Both the SISO (Laplace) and state-space models for the longitudinal transfer function of a, Peer Reviewed, Postprint (author's final draft)
Published: 2021

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