Blar i Institutt for teknisk kybernetikk på tittel
Viser treff 3586-3605 av 3788
-
Two-Stage Optimized Trajectory Planning for ASVs Under Polygonal Obstacle Constraints: Theory and Experiments
(Peer reviewed; Journal article, 2020)We propose a method for energy-optimized trajectory planning for autonomous surface vehicles (ASVs), which can handle arbitrary polygonal maps as obstacle constraints. The method comprises two stages: The first is a hybrid ... -
Two-way Actuator for Arm Mounted Exoskeleton
(Master thesis, 2015)Human exoskeleton designs have in recent years started adopting the use of flexible and pneumatic powered actuators, because of their ease of use and inherent properties. A disadvantage however is that they have to be set ... -
UAM Icing: Ice Accretion Experiments and CFD Icing Simulations on Rotors for eVTOL Unmanned Aircraft
(Peer reviewed; Journal article, 2023) -
UAV anti-icing system based on conductive coating
(Master thesis, 2014)Icing on leading edge surfaces such as wings and propeller blades presents a major risk for UAVs operating in a cold and humid environment. Reducing or loss of manoeuvrability, loss of lift, increase in drag, reducing ... -
UAV Fault-Tolerant Control by Combined L1 Adaptive Backstepping and Fault-dependent Control Allocation
(Chapter, 2015)This paper presents an approach to obtain fault tolerance in the nonlinear longitudinal motion control of an aircraft. The approach uses an L1 adaptive backstepping controller and fault-dependent control allocation to ... -
UAV Icing: A Performance Model for a UAV Propeller in Icing Conditions
(Chapter, 2022)In-flight icing on unmanned aerial vehicles is a severe hazard and imposes limits on the operational envelope. Icing has been shown to lead to substantial aerodynamic performance losses on lifting surfaces and propellers. ... -
UAV Icing: A Unified Icing Severity Index Derived from Performance Degradation
(Chapter, 2022)A problem that unmanned aerial vehicles (UAV) operators face when dealing with in-flight icing conditions is a reliable way to assess icing severity risk. This paper aims to develop an icing severity index that looks at ... -
UAV icing: Development of an ice protection system for the propeller of a small UAV
(Journal article; Peer reviewed, 2023)Atmospheric icing, also called in-flight icing, is a common hazard for the operation of uncrewed aerial vehicles (UAVs). With the background of a growing commercial and military market of small and medium-sized drones and ... -
UAV Icing: Experimental validation data for predicting ice shapes at low Reynolds numbers
(Peer reviewed; Journal article, 2023) -
UAV Icing: Ice Accretion Experiments and Validation
(Journal article; Peer reviewed, 2019)Atmospheric icing is a key challenge to the operational envelope of medium-sized fixed-wing UAVs. Today, several numeric icing codes exist, that all have been developed for general aviation applications. UAVs with wingspans ... -
UAV Icing: Ice Shedding Detection Methods for an Electrothermal De-Icing System
(Chapter, 2022)Among the identified problems with unmanned aerial vehicles (UAVs), especially with the medium-sized fixed-wing UAVs, is a lack of mature ice protection systems (IPSs). One of the emerging UAV ice protection technologies ... -
UAV Icing: Icing Cases for Validation of Path Planning Method
(Peer reviewed; Journal article, 2023)As part of the complete solution to deal with atmospheric in-flight icing on unmanned aerial vehicles (UAV), a path planner is a valuable tool for finding an optimal path for accomplishing UAV missions. When considering ... -
UAV Icing: Intercycle Ice Effects on Aerodynamic Performance
(Peer reviewed; Journal article, 2023)Atmospheric in-flight icing poses a challenge to all aircraft including unmanned aerial vehicles (UAVs). Aircraft should avoid icing conditions unless they have ways of mitigating the negative effects of icing, e.g., if ... -
UAV Icing: Numerical Simulation of Icing Effects on Wing and Empennage
(Peer reviewed; Journal article, 2023)In-flight icing can result in severe aerodynamic performance penalties for unmanned aerial vehicles. It is therefore important to understand to which extent ice will build up on fixed-wing unmanned aerial vehicles wings ... -
UAV Icing: Validation of an Ice Protection System Design for a Propeller
(Chapter, 2024) -
UAV net landing system for marine operations
(Master thesis, 2017)This thesis presents an automatic landing system designed for a fixed-wing unmanned aerial vehicle (UAV) to land in a net placed on ta ship. The UAV used is a Skywalker X8, a cheap and durable airframe, with a Pixhawk as ... -
UAV Path Planning for Ice Intelligence Purposes using NLP
(Master thesis, 2012)As the oil and shipping industry are interested in operating in arctic waters, the need for ice intelligence gathering is rising.The thesis describes the implentation and results of a path planning framework for an UAV ... -
UAV Path Planning for Maximum-Information Sensing in Spatiotemporal Data Acquisition
(Master thesis, 2017)Fixed-wing Unmanned Aerial Vehicles are extensively used for ground observation, as they allow for effective and precise methods of collecting information. They do however, have a downside as the quality of the information ... -
UAV path planning using MILP with experiments
(Journal article; Peer reviewed, 2017)In this paper, we look at the problem of tracking icebergs using multiple Unmanned Aerial Vehicles (UAVs). Our solutions use combinatorial optimization for UAV path planning by formulating a mixed integer linear programing ... -
UAV/UAS path planning for ice management information gathering
(Master thesis, 2011)The key objective of this work is the proposition of the path planning strategy for unmanned aerial vehicle (UAV) intended for information gathering in Arctic environments / ice-infested regions. Two different path planning ...