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Thematische Bibliographien / Avoidance algorithms / Dissertationen

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Dissertationen zum Thema „Avoidance algorithms“

Autor: Grafiati

Veröffentlicht am 25. Juni 2021

Zuletzt aktualisiert am 29. Juli 2025

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1

Zhang, Wenle. "Scalable deadlock avoidance algorithms for flexible manufacturing systems." Ohio : Ohio University, 2000. http://www.ohiolink.edu/etd/view.cgi?ohiou1179862449.

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2

Liu, Xintong. "Different techniques for congestion avoidance algorithms in bottleneck networks." Thesis, University of Ottawa (Canada), 2005. http://hdl.handle.net/10393/26961.

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In this thesis, we systematically examine the ECN (Explicit Congestion Notification) mechanism to be applied to some AQM (Active Queue Management) techniques developed in recent years, namely, RED (Random Early Detection), BLUE, ARED (Adaptive RED) and PI-RED (Proportional and Integral RED). We use packet marking as the indication of network congestion, instead of the strategy of dropping packet currently adopted by these AQM algorithms. The performance comparison of ECN-AQM with AQM has been conducted in not only a single bottleneck network but also a multi-bottleneck network environment. The

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3

Chua, Kee Koon 1965. "Deadlock avoidance: Improved algorithms for centralized and distributed systems." Thesis, The University of Arizona, 1992. http://hdl.handle.net/10150/291335.

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A deadlock avoidance algorithm for a centralized resource allocation system is presented. Unlike the Banker's algorithm, this proposed algorithm makes use of the state of the previous safe sequence to construct a new safe sequence. The performance of this proposed algorithm is compared to that of both the Banker's algorithm and an efficient algorithm proposed by Belik. The simulation results show that our algorithm's execution time is significantly better than the Banker's algorithm and is very competitive with Belik's algorithm. In addition, our Modified Banker's Algorithm produces optimal re

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4

DE, FILIPPIS LUCA. "Advanced Path Planning and Collision Avoidance Algorithms for UAVs." Doctoral thesis, Politecnico di Torino, 2012. http://hdl.handle.net/11583/2497102.

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The thesis aims to investigate and develop innovative tools to provide autonomous ﬂight capability to a ﬁxed-wing unmanned aircraft. Particularly it contributes to research on path optimization, tra jectory tracking and collision avoidance with two algorithms designed respectively for path planning and navigation. The complete system generates the shortest path from start to target avoiding known obstacles represented on a map, then drives the aircraft to track the optimum path avoiding unpredicted ob jects sensed in ﬂight. The path planning algorithm, named Kinematic A*, is developed on the b

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5

Rushall, David Aaron 1964. "Efficient heuristics for collision avoidance in three dimensions." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277041.

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This thesis represents a relatively new aspect of computing with regard to robotics. The need for fast, efficient collision avoidance algorithms is growing rapidly. Because conventional methods are complex and require vast amounts of computation, heuristic algorithms are more appealing. The focus of this thesis is the problem of moving a point through three dimensional space while avoiding known polyhedral obstacles. A heuristic algorithm to find shortest (near-optimal) collision-free paths in the presence of polyhedral obstacles, given initial and final positions, is presented. Previous metho

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6

Conkur, Erdinc Sahin. "Real time path planning and obstacle avoidance algorithms for redundant manipulators." Thesis, University of Bristol, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389131.

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7

Pai, Arun S. "Development of deterministic collision-avoidance algorithms for routing automated guided vehicles /." Online version of thesis, 2008. http://hdl.handle.net/1850/7289.

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8

Ringdahl, Ola. "Techniques and Algorithms for Autonomous Vehicles in Forest Environment." Licentiate thesis, Umeå : Department of Computing Science, Umeå University, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1314.

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9

Conrad, Jeremy (Jeremy A. ). "An educational tool to assist students in the evaluation of object avoidance algorithms." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/36302.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006.<br>Includes bibliographical references (p. 21).<br>Autonomous robots are becoming a part of everyday life. One difficulty in the creation of autonomous robots is having the robots avoid objects. In particular once one has chosen an algorithm difficulty arises in perfecting the parameters involved. Presented here is an implementation of an algorithm and an education support tool add-on to MOOS that allows the end user to quickly vary the parameters to test the performance of the system.<br>by Jeremy Con

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10

Lee, Hua. "High-Precision Geolocation Algorithms for UAV and UUV Applications in Navigation and Collision Avoidance." International Foundation for Telemetering, 2008. http://hdl.handle.net/10150/606155.

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ITC/USA 2008 Conference Proceedings / The Forty-Fourth Annual International Telemetering Conference and Technical Exhibition / October 27-30, 2008 / Town and Country Resort & Convention Center, San Diego, California<br>UUV homing and docking and UAV collision avoidance are two seemingly separate research topics for different applications. Upon close examination, these two are a pair of dual problems, with interesting correspondences and commonality. In this paper, we present the theoretical analysis, signal processing, and the field experiments of these two algorithms in UAV and UUV applicatio

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11

Call, Brandon R. "Obstacle Avoidance for Small Unmanned Air Vehicles." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1556.pdf.

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12

Edwan, Talal A. "Improved algorithms for TCP congestion control." Thesis, Loughborough University, 2010. https://dspace.lboro.ac.uk/2134/7141.

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Reliable and efficient data transfer on the Internet is an important issue. Since late 70's the protocol responsible for that has been the de facto standard TCP, which has proven to be successful through out the years, its self-managed congestion control algorithms have retained the stability of the Internet for decades. However, the variety of existing new technologies such as high-speed networks (e.g. fibre optics) with high-speed long-delay set-up (e.g. cross-Atlantic links) and wireless technologies have posed lots of challenges to TCP congestion control algorithms. The congestion control

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13

Dutra, Teófilo Bezerra. "Gradient-Based Steering for Vision-Based Crowd Simulation Algorithms." reponame:Repositório Institucional da UFC, 2015. http://www.repositorio.ufc.br/handle/riufc/19859.

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DUTRA, Teófilo Bezerra. Gradient-Based Steering for Vision-Based Crowd Simulation Algorithms. 2015. 122 f. Tese (Doutorado em Ciência da Computação)-Universidade Federal do Ceará, Fortaleza, 2015.<br>Submitted by Vitor Campos (vitband@gmail.com) on 2016-09-28T21:38:15Z No. of bitstreams: 1 2015_tese_tfdutra.pdf: 18611468 bytes, checksum: efc5f80ee6b8df68191af2bca394a07a (MD5)<br>Approved for entry into archive by Jairo Viana (jairo@ufc.br) on 2016-09-28T22:54:58Z (GMT) No. of bitstreams: 1 2015_tese_tfdutra.pdf: 18611468 bytes, checksum: efc5f80ee6b8df68191af2bca394a07a (MD5)<br>Made available

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Kivrikis, Andreas, and Johan Tjernström. "Development and Evaluation of Multiple Objects Collision Mitigation by Braking Algorithms." Thesis, Linköping University, Department of Electrical Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2676.

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<p>A CMbB system is a system that with the help of sensors in the front of a car detects when a collision in unavoidable. When a situation like that is detected, the brakes are activated. The decision of whether to activate the brakes or not is taken by a piece of software called a decision maker. This software continuously checks for routes that would avoid an object in front of the car and as long as a path is found nothing is done. Volvo has been investigating several different CMbB-systems, and the research done by Volvo has previously focused on decision makers that only consider one obje

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Dutra, TeÃfilo Bezerra. "Gradient-Based Steering for Vision-Based Crowd Simulation Algorithms." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=14967.

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nÃo hÃ<br>Most recent crowd simulation algorithms equip agents with a synthetic vision component for steering. They offer promising perspectives by more realistically imitating the way humans navigate according to what they perceive of their environment. In this thesis, it is proposed a new perception/motion loop to steer agents along collision free trajectories that significantly improves the quality of vision-based crowd simulators. In contrast with previous solutions - which make agents avoid collisions in a purely reactive way - it is suggested exploring the full range of possible adaptati

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Wolinski, David. "Microscopic crowd simulation : evaluation and development of algorithms." Thesis, Rennes 1, 2016. http://www.theses.fr/2016REN1S036/document.

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Dû au grand intérêt porté à la simulation de foules, beaucoup d'algorithmes ont été et sont encore proposés. Toutefois, (1) il n'existe pas de méthode standard pour évaluer le réalisme et la flexibilité de ces algorithmes, et (2) même les algorithmes les plus récents produisent encore des artéfacts évidents. Abordant la première question, nous proposons une méthode visant à évaluer le réalisme des algorithmes de simulation de foules d'une manière objective et impartiale. ''Objective'' grâce à des métriques quantifiant la similitude entre les simulations et des données acquises en situation rée

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Edmonds, Kendy Elizabeth. "Demonstrating an Equivalent Level of Safety for sUAS in Shielded Environments." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/103964.

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The current proposed unmanned aircraft system (UAS) detect and avoid standards require the same safety metrics, even when in close proximity to the ground or structures. This requirement has the potential to hinder low altitude small unmanned aircraft operations, such as local package delivery and utility inspection. One of the main safety metrics for UASs to adhere to is a ``well clear" volume that quantifies the vertical and horizontal separation UASs are required to maintain from manned aircraft. The current volume of 2000 feet horizontal and +/- 250 feet vertical does not provide credit fo

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Bridgeman, M. "Algorithms for on-line measurement of harmonic damping and avoidance of harmonic resonances due to power factor capacitor switching in distribution systems." Thesis, Staffordshire University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272760.

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19

Schwienbacher, Markus [Verfasser], Heinz [Akademischer Betreuer] Ulbrich, and Carlo L. [Akademischer Betreuer] Bottasso. "Efficient Algorithms for Biped Robots - Simulation, Collision Avoidance and Angular Momentum Tracking / Markus Schwienbacher. Gutachter: Heinz Ulbrich ; Carlo L. Bottasso. Betreuer: Heinz Ulbrich." München : Universitätsbibliothek der TU München, 2014. http://d-nb.info/1055040285/34.

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20

Ledet, Jeffrey H. "Simulation and Performance Evaluation of Algorithms for Unmanned Aircraft Conflict Detection and Resolution." ScholarWorks@UNO, 2016. http://scholarworks.uno.edu/td/2168.

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The problem of aircraft conflict detection and resolution (CDR) in uncertainty is addressed in this thesis. The main goal in CDR is to provide safety for the aircraft while minimizing their fuel consumption and flight delays. In reality, a high degree of uncertainty can exist in certain aircraft-aircraft encounters especially in cases where aircraft do not have the capabilities to communicate with each other. Through the use of a probabilistic approach and a multiple model (MM) trajectory information processing framework, this uncertainty can be effectively handled. For conflict detection, a r

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21

Abas, Ashardi B. "Non-intrusive driver drowsiness detection system." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5521.

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The development of technologies for preventing drowsiness at the wheel is a major challenge in the field of accident avoidance systems. Preventing drowsiness during driving requires a method for accurately detecting a decline in driver alertness and a method for alerting and refreshing the driver. As a detection method, the authors have developed a system that uses image processing technology to analyse images of the road lane with a video camera integrated with steering wheel angle data collection from a car simulation system. The main contribution of this study is a novel algorithm for drows

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Alam, Sameer Information Technology &amp Electrical Engineering Australian Defence Force Academy UNSW. "Evolving complexity towards risk : a massive scenario generation approach for evaluating advanced air traffic management concepts." Awarded by:University of New South Wales - Australian Defence Force Academy, 2008. http://handle.unsw.edu.au/1959.4/38966.

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Present day air traffc control is reaching its operational limits and accommodating future traffic growth will be a challenging task for air traffic service providers and airline operators. Free Flight is a proposed transition from a highly-structured and centrally-controlled air traffic system to a self-optimized and highly-distributed system. In Free Flight, pilots will have the flexibility of real-time trajectory planning and dynamic route optimization given airspace constraints (traffic, weather etc.). A variety of advanced air traffc management (ATM) concepts are proposed as enabling te

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23

Cowley, Edwe Gerrit. "Kinodynamic planning for a fixed-wing aircraft in dynamic, cluttered environments : a local planning method using implicitly-defined motion primitives." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80077.

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Thesis (MScEng)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: In order to navigate dynamic, cluttered environments safely, fully autonomous Unmanned Aerial Vehicles (UAVs) are required to plan conflict-free trajectories between two states in position-time space efficiently and reliably. Kinodynamic planning for vehicles with non-holonomic dynamic constraints is an NP-hard problem which is usually addressed using sampling-based, probabilistically complete motion planning algorithms. These algorithms are often applied in conjunction with a finite set of simple geometric motion primi

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24

Durusu, Deniz. "Camera Controlled Pick And Place Application With Puma 760 Robot." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/2/12606759/index.pdf.

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This thesis analyzes the kinematical structure of Puma 760 arm and introduces the implementation of image based pick and place application by taking care of the obstacles in the environment. Forward and inverse kinematical solutions of PUMA 760 are carried out. A control software has been developed to calculate both the forward and inverse kinematics solution of this manipulator. The control program enables user to perform both offline programming and real time realization by transmitting the VAL commands (Variable Assembly Language) to the control computer. Using the proposed inverse kinemat

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25

Jalel, Sawssen. "Optimisation de la navigation robotique." Phd thesis, Toulouse, INPT, 2016. http://oatao.univ-toulouse.fr/17515/1/Jalel.pdf.

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La robotique mobile autonome est un axe de recherche qui vise à donner à une machine la capacité de se mouvoir dans un environnement sans assistance ni intervention humaine. Cette thèse s’intéresse à la partie décisionnelle de la navigation robotique à savoir la planification de mouvement pour un robot mobile non-holonome, pour lequel, la prise en compte des contraintes cinématiques et non-holonomes est primordiale. Aussi, la nécessité de considérer la géométrie propre du robot et la bonne maîtrise de l’environnement dans lequel il évolue constituent des contraintes à assurer. En effet la plan

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Guo, Yixuan. "Hexapod Gait Planning and Obstacle Avoidance Algorithm." University of Toledo / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1461868607.

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27

Naik, Ankur. "Arc Path Collision Avoidance Algorithm for Autonomous Ground Vehicles." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/30969.

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Presented in this thesis is a collision avoidance algorithm designed around an arc path model. The algorithm was designed for use on Virginia Tech robots entered in the 2003 and 2004 Intelligent Ground Vehicle Competition (IGVC) and on our 2004 entry into the DARPA Grand Challenge. The arc path model was used because of the simplicity of the calculations and because it can accurately represent the base kinematics for Ackerman or differentially steered vehicles. Clothoid curves have been used in the past to create smooth paths with continuously varying curvature, but clothoids are computationa

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Yucel, Gizem. "A Reactionary Obstacle Avoidance Algorithm For Autonomous Vehicles." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614480/index.pdf.

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This thesis focuses on the development of guidance algorithms in order to avoid a prescribed obstacle primarily using the Collision Cone Method (CCM). The Collision Cone Method is a geometric approach to obstacle avoidance, which forms an avoidance zone around the obstacles for the vehicle to pass the obstacle around this zone. The method is reactive as it helps to avoid the pop-up obstacles as well as the known obstacles and local as it passes the obstacles and continue to the prescribed trajectory. The algorithm is first developed for a 2D (planar) avoidance in 3D environment and then extend

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Chafye, Nemri. "A collision avoidance algorithm for a cylindrical robot manipulator /." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61719.

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30

Doe, Julien Albert. "Sensor Fusion Algorithm for Airborne Autonomous Vehicle Collision Avoidance Applications." DigitalCommons@CalPoly, 2018. https://digitalcommons.calpoly.edu/theses/2004.

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A critical ability of any aircraft is to be able to detect potential collisions with other airborne objects, and maneuver to avoid these collisions. This can be done by utilizing sensors on the aircraft to monitor the sky for collision threats. However, several problems face a system which aims to use multiple sensors for target tracking. The data collected from sensors needs to be clustered, fused, and otherwise processed such that the flight control system can make accurate decisions based on it. Raw sensor data, while filled with useful information, is tainted with inaccuracies due to limit

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31

Doerzaph, Zachary R. "Development of a Threat Assessment Algorithm for Intersection Collision Avoidance Systems." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/30013.

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Relative to other roadway segments, intersections occupy a small portion of the overall infrastructure; however, they represent the location for nearly 41 % of the annual automotive crashes in the United States. Thus, intersections are an inherently dangerous roadway element and a prime location for vehicle conflicts. Traditional safety treatments are effective at addressing certain types of intersection safety deficiencies; however, cumulative traffic data suggests these treatments do not address a large portion of the crashes that occur each year. Intersection Collision Avoidance Syste

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32

Cherrak, Omar. "Séparation aveugle de mélanges linéaires de sources : application à la surveillance maritime." Thesis, Toulon, 2016. http://www.theses.fr/2016TOUL0008/document.

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Dans cette thèse, nous nous intéressons au système d’identification automatique spatial lequel est dédié à la surveillancemaritime par satellite. Ce système couvre une zone bien plus large que le système standard à terre correspondant àplusieurs cellules traditionnelles ce qui peut entraîner des risques de collision des données envoyées par des navireslocalisés dans des cellules différentes et reçues au niveau de l’antenne du satellite. Nous présentons différentes approchesafin de répondre au problème de collision considéré. Elles ne reposent pas toujours sur les mêmes hypothèses en ce quiconc

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Gonzalez-Carrascosa, Partida Ricardo. "Optimizing manoeuvres for long collision avoidance active system of a car." Thesis, Högskolan i Skövde, Institutionen för teknik och samhälle, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-8502.

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This project presents the development of a collision avoidance active system for cars.There is a large interest in developing avoidance system in the automotive industry since the accidents are of such nature that can be avoided if the system works as desirable e.g., in animal crossing or having the car in front stopping without the driver noticing. A control system is designed to avoid collisions by acting on the steer and brakes of a car. An algorithm is developed to optimize a fuzzy logic controller which actuates on the steer and brakes of the car. The algorithm optimizes the inputs of the

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34

Toku, Hadi Alper. "A New Feedback-based Contention Avoidance Algorithm For Optical Burst Switching Networks." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12610165/index.pdf.

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In this thesis, a feedback-based contention avoidance technique based on weighted Dijkstra algorithm is proposed to address the contention avoidance problem for Optical Burst Switching networks. Optical Burst Switching (OBS) has been proposed as a promising technique to support high-bandwidth, bursty data traffic in the next-generation optical Internet. Nevertheless, there are still some challenging issues that need to be solved to achieve an effective implementation of OBS. Contention problem occurs when two or more bursts are destined for the same wavelength. To solve this problem, various r

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Balan, Lucian Bone Gary M. "Real-time 3D collision avoidance algorithm for safe human and robot coexistence." *McMaster only, 2006.

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36

Avnaïm, Francis. "Placement et déplacement de formes rigides ou articulées." Besançon, 1989. http://www.theses.fr/1989BESA2018.

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37

Andrianirina, Heriniaina Philibert. "PF-OBS: A proportionally fair congestion avoidance algorithm for Optical Burst Switching networks." Thesis, University of Ottawa (Canada), 2008. http://hdl.handle.net/10393/27953.

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Optical Burst Switching (OBS) is an optical switching technique which eliminates the electronic bottleneck by keeping transmitted data in the optical domain. Therefore, it can effectively utilize the large bandwidth available in optical fibres. For these reasons, OBS is considered the future of optical networks. However, burst loss caused by congestion is a significant problem in OBS because flexible, practical optical buffers currently do not exist. This thesis proposes a rate-based congestion control method, called PF-OBS, which limits the blocking probability in OBS networks. PF-OBS uses a

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Viquez, Rojas Oscar Alberto. "Evaluation of an acoustic detection algorithm for reactive collision avoidance in underwater applications." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/83753.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (page 33).<br>This thesis sought to evaluate a vehicle detection algorithm based on a passive acoustic sensor, intended for autonomous collision avoidance in Unmanned Underwater Vehicles. By placing a hydrophone at a safe distance from a dock, it was possible to record the acoustic signature generated by a small motor boat as it navigated towards, and then away from the sensor. The time-varying sound intensity was estimated

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Woolley, Eileen K. "Implementation and evaluation of a collision-avoidance navigational algorithm on a mobile robot." Full text, Acrobat Reader required, 1998. http://viva.lib.virginia.edu/etd/theses/woolley98.pdf.

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40

Lee, Jaehwan. "Hardware/Software Deadlock Avoidance for Multiprocessor Multiresource System-on-a-Chip." Diss., Also available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-11222004-083429/unrestricted/lee%5Fjaehwan%5F200412%5Fphd.pdf.

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41

Hetrick, Shannon. "Examination of Driver Lane Change Behavior and the Potential Effectiveness of Warning Onset Rules for Lane Change or "Side" Crash Avoidance Systems." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36654.

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Lane change or "Side" Crash Avoidance Systems (SCAS) technologies are becoming available to help alleviate the lane change crash problem. They detect lane change crash hazards and warn the driver of the presence of such hazards. This thesis examines driver lane change behavior and evaluates the potential effectiveness of five warning onset rules for lane change or "side" crash avoidance system (SCAS) technologies. The ideal SCAS should warn the driver only when two conditions are met: (1) positive indication of lane change intent and (2) positive detection of a proximal vehicle in the adjac

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Tong, Peter, and mail@petertong com. "Application of Genetic Algorithm to a Forced Landing Manoeuvre on Transfer of Training Analysis." RMIT University. Aerospace, Mechanical and Manufacturing Engineering, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080528.114140.

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This study raises some issues for training pilots to fly forced landings and examines the impact that these issues may have on the design of simulators for such training. It focuses on flight trajectories that a pilot of a single-engine general aviation aircraft should fly after engine failure and how pilots can be better simulator trained for this forced landing manoeuvre. A sensitivity study on the effects of errors and an investigation on the effect of tolerances in the aerodynamic parameters as prescribed in the Manual of Criteria for the Qualification of Flight Simulators have on the pe

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Wallace, Shane Alan. "DEVELOPMENT OF A SMALL AND INEXPENSIVE TERRAIN AVOIDANCE SYSTEM FOR AN UNMANNED AERIAL VEHICLE VIA POTENTIAL FUNCTION GUIDANCE ALGORITHM." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/380.

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Despite the first unmanned aerial vehicle (UAV) mission being flown on Aug 22 1849 to bomb Venice UAVs have only recently began to modernize into sophisticated tools beyond simple aerial vehicles. With an increasing number of potential applications, such as cargo delivery, communications, search and rescue, law enforcement, and homeland security, the need for appropriate UAV technology advancement also arose. Here, the development of a low-cost collision avoidance system is described. Hardware was tested and selected based on predetermined constraints and goals. Additionally, a variety of pote

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Calliess, Jan-Peter. "Conservative decision-making and inference in uncertain dynamical systems." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:b7206c3a-8d76-4454-a258-ea1e5bd1c63e.

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The demand for automated decision making, learning and inference in uncertain, risk sensitive and dynamically changing situations presents a challenge: to design computational approaches that promise to be widely deployable and flexible to adapt on the one hand, while offering reliable guarantees on safety on the other. The tension between these desiderata has created a gap that, in spite of intensive research and contributions made from a wide range of communities, remains to be filled. This represents an intriguing challenge that provided motivation for much of the work presented in this the

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McLaughlin, Shane Brendan. "Analytic Assessment of Collision Avoidance Systems and Driver Dynamic Performance in Rear-End Crashes and Near-Crashes." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/29561.

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Collision avoidance systems (CASs) are being developed and fielded to reduce the number and severity of rear-end crashes. Kinematic algorithms within CASs evaluate sensor input and apply assumptions describing human-response timing and deceleration to determine when an alert should be presented. This dissertation presents an analytic assessment of dynamic function and performance CASs and associated driver performance for preventing automotive rear-end crashes. A method for using naturalistic data in the evaluation of CAS algorithms is described and applied to three algorithms. Time-series

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Safeea, Mohammad. "Des robots manipulateurs collaboratifs sûrs." Thesis, Paris, HESAM, 2020. http://www.theses.fr/2020HESAE036.

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Les manipulateurs industriels collaboratifs ouvrent une nouvelle ère dans la fabrication flexible, où les robots et les humains sont capables de coexister et de travailler ensemble. Cependant, divers défis persistent pour parvenir à une collaboration complète entre les robots et les humains en milieu industriel. Dans cette thèse, deux défis principaux - la sécurité et la collaboration - sont abordés pour atteindre cet objectif. Concernant la sécurité, la thèse présente une méthode d'évitement des collisions en temps réel qui permet au robot d'ajuster les chemins générés hors ligne pour une tâc

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Stevens, Thomas F. "A LiDAR Based Semi-Autonomous Collision Avoidance System and the Development of a Hardware-in-the-Loop Simulator to Aid in Algorithm Development and Human Studies." DigitalCommons@CalPoly, 2015. https://digitalcommons.calpoly.edu/theses/1521.

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In this paper, the architecture and implementation of an embedded controller for a steering based semi-autonomous collision avoidance system on a 1/10th scale model is presented. In addition, the development of a 2D hardware-in-the-loop simulator with vehicle dynamics based on the bicycle model is described. The semi-autonomous collision avoidance software is fully contained onboard a single-board computer running embedded GNU/Linux. To eliminate any wired tethers that limit the system’s abilities, the driver operates the vehicle at a user-control-station through a wireless Bluetooth interface

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Dicheva, Svetlana. "Planification de mission pour un système de lancement aéroporté autonome." Phd thesis, Université d'Evry-Val d'Essonne, 2012. http://tel.archives-ouvertes.fr/tel-00878784.

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Cette thèse de doctorat s'inscrit dans le cadre des activités de recherche sur les systèmes de lancement aéroporté autonome. L'originalité du travail est basée sur la planification de mission effectuée par un algorithme de type A*(A-étoile). Cet algorithme a été amélioré pour répondre aux besoins de la mission de largage d'un lanceur. Il effectue la planification du chemin le plus court dans un espace tridimensionnel. Le meilleur chemin est choisi à partir de plusieurs points de passage générés dans la région de mission. Une région peut être une phase du vol ou une partie du profil de vol. Le

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Petitprez, Etienne. "Cοntrôle et cοοrdinatiοn d'une flοtte de drοnes". Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMLH18.

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Le projet de thèse vise à contrôler et coordonner les actions d’un ensemble de drones autonomes, pour un fonctionnement en essaim. Trois applications clefs sont ciblées : — un problème d’inventaire d’entrepôts combinant un ensemble de robots terrestres et de drones, — un problème de mesure de la qualité de l’air (caractérisation de panaches de polluants), — un problème de déploiement de drones pour de multiples missions de surveillance sur de longues durées. Ces applications ajoutent aux difficultés liées à la robotique mobile collective un volet d’optimisation sous incertitude, la conception

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Godeme, Jean-Jacques. "Ρhase retrieval with nοn-Euclidean Bregman based geοmetry". Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMC214.

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Dans ce travail, nous nous intéressons au problème de reconstruction de phase de signaux à valeurs réelles en dimension finie, un défi rencontré dans de nombreuses disciplines scientifiques et d’ingénierie. Nous explorons deux approches complémentaires : la reconstruction avec et sans régularisation. Dans les deux cas, notre travail se concentre sur la relaxation de l’hypothèse de Lipschitz-continuité généralement requise par les algorithmes de descente du premier ordre, et qui n’est pas valide pour la reconstruction de phase lorsqu’il formulée comme un problème de minimisation. L’idée clé ici

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