References of "Voos, Holger 50003283"
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See detailIndoor Navigation for Quadrotor UAVs Using Schematic Environment Maps
Krokowicz, Tomasz; Gasca, Miguel; Voos, Holger UL et al

in IEEE 19th International Workshop on Robotics in Alpe-Adria-Danube Region (RAAD), Budapest, 2010 (2010)

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See detailController Design for Quadrotor UAVs using Reinforcement Learning
Bou-Ammar, Haitham; Voos, Holger UL; Ertel, Wolfgang

in IEEE Multi-conference on Systems and Control, Yokohama, Japan, 8-10 Sept. 2010 (2010)

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See detailSituational Method Engineering applied for the Enactment of Development Processes: An Agent-based Approach
Seemüller, Holger; Voos, Holger UL; Honke, B. et al

in 12th Int. Conference on Enterprise Information Systems ICEIS 2010, Funchal, Portugal, 2010 (2010)

Interdisciplinary product development is faced with the collaboration of diverse roles and a multitude of interrelated artifacts. Traditional and sequential process models cannot deal with the long ... [more ▼]

Interdisciplinary product development is faced with the collaboration of diverse roles and a multitude of interrelated artifacts. Traditional and sequential process models cannot deal with the long-lasting and dynamic behavior of the development processes of today. Moreover, development processes have to be tailored to the needs of the projects, which are usually distributed today. Thus, keeping these projects on track from a methodology point of view is difficult. In order to deal with these challenges, this paper will present a novel method engineering and enactment approach. It combines the ideas of workflow technologies and product line engineering for method engineering as well as agent technology for the development process enactment. [less ▲]

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See detailDevelopment of Safe Autonomous Mobile Service Robots using an Active Integrated Approach
Voos, Holger UL; Ertle, Philipp; Söffker, Dirk

in 41st International Symposium on Robotics (ISR) 2010, Munich, Germany (2010)

Mobile service robots are expected to provide services in various domains of life. Herein, the main challenge for the robot is the execution of complex tasks within an unstructured dynamic environment. In ... [more ▼]

Mobile service robots are expected to provide services in various domains of life. Herein, the main challenge for the robot is the execution of complex tasks within an unstructured dynamic environment. In order to achieve the necessary highly flexible behavior, mobile service robots must have a high degree of autonomy. However, although much effort is spent on the investigation and realization of autonomy since decades, it is mostly neglected, that autonomous robots are also causing new types of safety problems. It seems impossible to solve these problems with traditional passive safety approaches. Therefore, new methods are introduced in order to check safety during operation time. [less ▲]

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See detailNonlinear Landing Control for Quadrotor UAVs
Voos, Holger UL

in 21 Fachgespräch Autonome Mobile Systeme AMS 2009, Karslruhe, Germany (2009)

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See detailOnline Risk Assessment for safe Autonomous Mobile Robots - A Perspective
Voos, Holger UL; Ertle, Philipp

in 7th Workshop on Advanced Control and Diagnosis ACD 2009, Zielona Gora, Poland (2009)

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See detailAgent-based Distributed Resource Allocation in Continuous Dynamic Systems
Voos, Holger UL

in Ahmed, Salman; Karsiti, Mohd Noh (Eds.) Multiagent Systems (2009)

Intelligent agents and multiagent systems reveal new strategies to design highly flexible automation systems. There are first promising industrial applications of multiagent systems for the control of ... [more ▼]

Intelligent agents and multiagent systems reveal new strategies to design highly flexible automation systems. There are first promising industrial applications of multiagent systems for the control of manufacturing, logistics, traffic or multi-robot systems. One reason for the success of most of these applications is their nature as some form of a distributed resource allocation problem which can be addressed very well by multiagent systems. Resource allocation problems solved by agents can be further categorized into static or dynamic problems. In static problems, the allocations do not depend on time and many resource allocation problem of practical interest can be solved using these static considerations, even in discrete-event systems like manufacturing or logistic systems. However, problems especially in highly dynamic environments cannot be addressed by this pure static approach since the allocations, i.e. the decision variables, depend on time and previous states of the considered system. These problems are hardly considered in the relevant agent literature and if, most often only discrete-event systems are considered. This work focuses on agent-based distributed dynamic resource allocation problems especially in continuous production systems or other continuous systems. Based on the current states of the distributed dynamic system, continuous-time allocation trajectories must be computed in real-time. Designing multiagent systems for distributed resource allocation mainly comprises the design of the local capabilities of the single agents and the interaction mechanisms that makes them find the best or at least a feasible allocation without any central control. In this work, the agents are designed as two-level entities: while the low-level functions are responsible for the real-time allocation of the resources in the form of closed-loop feedback control, the high-level functionalities realize the deliberative capabilities such as long-term planning and negotiation of the resource allocations. Herein, the resource allocation problem is considered as a distributed optimization problem under certain constraints. The agents play the role of local optimizers which then have to coordinate their local solutions to an overall consistent solution. It is shown in this contribution that the described approach can be interpreted as a market-based allocation scheme based on balancing of supply and demand of the resources using a virtual price. However, the agents calculate and negotiate complete supply and demand trajectories using model-based predictions which also leads to the calculation of a price trajectory. This novel approach does not only consider the dynamic behaviour of the distributed system but also combines control tasks and resource allocation in a very consistent way. The approach is demonstrated using two practical applications: a heating system and an industrial sugar extraction process. [less ▲]

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See detailMotion Planning for Mobile Robots in Microproduction under Special Constraints
Ziemniak, Pavel; Paczynski, Andreas; Voos, Holger UL et al

in 7th Workshop on Advanced Control and Diagnosis ACD 2009, Zielona Gora, Poland (2009)

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See detailModel Predictive Collaborative Motion Planning and Control of Mobile Robots including Safety Aspects
Voos, Holger UL

in Int. Conference on Advanced Robotics ICAR 2009, Munich, Germany (2009)

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See detailNonlinear Control of Stabilized Flight and Landing Control for Quadrotor UAVs
Voos, Holger UL; Nourghassemi, B.

in 7th Workshop on Advanced Control and Diagnosis ACD 2009, Zielo Gora, Poland (2009)

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See detailEntwurf eines Flugreglers für ein vierrotoriges unbemanntes Fluggerät - Control Systems Design for a Quadrotor UAV
Voos, Holger UL

in Automatisierungstechnik (2009), 57(9), 423-431

This paper describes the design of a nonlinear control system for a small four-rotor aerial robot, a so called quadrotor UAV (unmanned aerial vehicle). Stabilizing control of these vehicles is a difficult ... [more ▼]

This paper describes the design of a nonlinear control system for a small four-rotor aerial robot, a so called quadrotor UAV (unmanned aerial vehicle). Stabilizing control of these vehicles is a difficult task because of the nonlinear dynamic behavior. The proposed control system is based on a decomposition into an inner attitude and an outer velocity control loop. For the attitude control, feedback linearization is applied that transforms the system into a decoupled linear system in state variable format. This resulting system is controlled via a conventional linear controller, leading to a sufficiently fast and damped closed loop dynamics. The outer control loop applies a nonlinear inversion to compensate a static nonlinearity and a linear control system to control the remaining linear dynamics. The advantage of the derived control system besides the excellent performance is the simple structure and the easy implementation. [less ▲]

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See detailNonlinear Control of a Quadrotor Micro-UAV using Feedback-Linearization
Voos, Holger UL

in 5th IEEE International Conference on Mechatronics ICM, Malaga, Spain, April 2009 (2009)

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See detailOpCog: An Industrial Development Approach for Cognitive Agent Systems in Military UAV Applications
Reichel, Kai; Hochgeschwender, Nico; Voos, Holger UL

in Int. Conference on Autonomous Agents and Multiagent Systems AAMAS 2008, Lissabon, Portugal (2008)

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See detailAn Operational Driven Development Approach for Cognitive Agents in UAV Applications
Reichel, Kai; Hochgeschwender, Nico; Voos, Holger UL

in Int. Conference on Cognitive Systems CogSys 2008, Karlsruhe, Germany (2008)

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See detailDefence Industry Applications of Autonomous Agents and Multi-Agent Systems.
Thompson, Simon; Voos, Holger UL; Pechouchek, Michal

Book published by Birkhäuser (2007)

Defense and security related applications are increasingly being tackled by researchers and practioners using technologies developed in the field of Intelligent Agent research. This book is a collection ... [more ▼]

Defense and security related applications are increasingly being tackled by researchers and practioners using technologies developed in the field of Intelligent Agent research. This book is a collection of recent refereed papers drawn from workshops and other colloquia held in various venues around the world in the last two years. The contributions in this book describe work in the development of command and control systems, military communications systems, information systems, surveillance systems, autonomous vehicles, simulators and Human Computer Interactions. The broad nature of the application domain is matched by the diversity of techniques used in the papers that are included in the collection which provides, for the first time, an overview of the most significant work being performed by the leading workers in this area. It provides a single reference point for the state of the art in the field at the moment and will be of interest to Computer Science professionals working in the defense sector, and academics and students investigating the technology of Intelligent Agents that are curious to see how the technology is applied in practice. [less ▲]

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See detailNonlinear and Neural Network-based Control of a Small Four-Rotor Aerial Robot
Voos, Holger UL

in IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM, Zurich, Switzerland, 2007 (2007)

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See detailImage Processing Algorithms for an Auto Focus System for Slit Lamp Microscopy
Gierl, Christian; Kondo, T.; Voos, Holger UL et al

in Lecture Notes in Computer Science (Advanced Concepts for Intelligent Vision Systems), 4678/2007 (2007)

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See detailNon-Linear State-dependent Riccati Equation Control for a Quadrotor UAV
Voos, Holger UL

in IEEE Conference on Control Applications, CCA, Munich, Germany, 2006 (2006)

Detailed reference viewed: 151 (1 UL)
See detailMarket-based Control: Eine neue Methode zur automatisierten Ressourcenzuteilung
Voos, Holger UL

Book published by Shaker Verlag (2003)

Detailed reference viewed: 110 (6 UL)
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See detailOptimierung der Wickelgüte in der Spinnvliesproduktion mit Fuzzy Control
Voos, Holger UL; Hartel, Harald; Schmitt, Peter

in Automatisierungstechnische Praxis (1999), 41(6), 48-54

This work introduces a new control concept for a re-winder in the spunweb production. The rewinder serves to cut the spunweb-rolls into several rolls of customer-specified width. High customer demands ... [more ▼]

This work introduces a new control concept for a re-winder in the spunweb production. The rewinder serves to cut the spunweb-rolls into several rolls of customer-specified width. High customer demands toward roll quality were, so far, only met unsatisfactorily with PID control of the web-tension. The newly developed control concept uses fuzzy control. It provides a modular design and is specifically adjusted to the different states of the machine that occur during production. It was proven that this concept rapidly increases roll quality. The control concept is implemented on a PLC and used in industrial spunweb production at Freudenberg Vliesstoffe KG in Kaiserslautern. [less ▲]

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