How ornithopters can perch autonomously on a branch [PDF]
Nature Communications, 2022 Bird-like, flapping-wing robots can fly safely, quietly and with high agility. The authors propose a method to extend flapping-wing robots capability with autonomous perching, and is demonstrated with a 700 g robot flying and perching onto a branch.
Raphael Zufferey +5 more
doaj +2 more sources
Vision-Based Hybrid Controller to Release a 4-DOF Parallel Robot from a Type II Singularity [PDF]
Sensors, 2021 The high accuracy and dynamic performance of parallel robots (PRs) make them suitable to ensure safe operation in human–robot interaction. However, these advantages come at the expense of a reduced workspace and the possible appearance of type II ...
José L. Pulloquinga +5 more
doaj +2 more sources
Physiological and Sleep Profiles in Insomnia, OSA and COMISA: A Comparative Study in Portugal and Spain. [PDF]
J Sleep ResABSTRACT Insomnia and obstructive sleep apnea (OSA) are common sleep disorders that often co‐occur as comorbid insomnia and sleep apnea (COMISA), worsening health outcomes. This study characterized and compared the physiological and sleep profiles of insomnia, OSA and COMISA in population‐based datasets from Portugal (n = 147) and Spain (n = 264 ...
Carvalho M +9 more
europepmc +2 more sources
Model-Based Control of a 4-DOF Rehabilitation Parallel Robot with Online Identification of the Gravitational Term [PDF]
Sensors, 2023 Parallel robots are being increasingly used as a fundamental component of lower-limb rehabilitation systems. During rehabilitation therapies, the parallel robot must interact with the patient, which raises several challenges to the control system: (1 ...
Rafael J. Escarabajal +4 more
doaj +2 more sources
Comparative Analysis of Robustness and Tracking Efficiency of Maximum Power Point in Photovoltaic Generators, Using Estimation of the Maximum Power Point Resistance by Irradiance Measurement Processing [PDF]
Sensors, 2020 The model-based methods of maximum power point (MPP) tracking in photovoltaic installations are widely known. One of these methods proposes the use of tracking by direct estimation of the maximum power point resistance using irradiance measurement ...
Juan Ríos +3 more
doaj +2 more sources
Customizable Optical Force Sensor for Fast Prototyping and Cost-Effective Applications [PDF]
Sensors, 2018 This paper presents the development of an optical force sensor architecture directed to prototyping and cost-effective applications, where the actual force requirements are still not well defined or the most suitable commercial technologies would highly ...
Jorge A. Díez +5 more
doaj +2 more sources
Dual Quaternions as Constraints in 4D-DPM Models for Pose Estimation [PDF]
Sensors, 2017 The goal of this research work is to improve the accuracy of human pose estimation using the Deformation Part Model (DPM) without increasing computational complexity.
Enrique Martinez-Berti +2 more
doaj +2 more sources
On Using a Mobile Application to Support Teledermatology: A Case Study in an Underprivileged Area in Colombia. [PDF]
Int J Telemed Appl, 2018 Background. The use of mobile applications in dermatology to support remote diagnosis is gaining acceptance, particularly in rural areas, where dermatology services are commonly managed by healthcare personnel with no specialty training. Moreover, ontologies—sets of concepts that represent knowledge in a given domain—are increasingly being used to ...
Sáenz JP +3 more
europepmc +2 more sources
Supervised Learning of Natural-Terrain Traversability with Synthetic 3D Laser Scans
Applied Sciences, 2020 Autonomous navigation of ground vehicles on natural environments requires looking for traversable terrain continuously. This paper develops traversability classifiers for the three-dimensional (3D) point clouds acquired by the mobile robot Andabata on ...
Jorge L. Martínez +4 more
doaj +1 more source
Applied Sciences, 2021 This work presents the application of an aerial manipulation robot for the semi-autonomous installation of clip-type bird flight diverters on overhead power line cables. A custom-made prototype is designed, developed, and experimentally validated.
Angel Rodriguez-Castaño +5 more
doaj +1 more source