Results 1 - 10 of 285

Decision making in multi-UAVs systems: Architecture and Algorithms

by Simon Lacroix, Rachid Alami, Thomas Lemaire, Gautier Hattenberger
"... Summary. This chapter depicts an architecture that aims at designing a multi-UAV framework enabling cooperative operations in a system in which some UAVs are directly controlled by an operator, others are only endowed with operational au-tonomy, and others have decisional autonomy capacities. The ar ..."
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contract-net protocol that can handle task allocation for complex multi-UAV missions, a planning scheme based on a Hierarchical Task Networks planner completed with plan-refiners that consider the actual domain models, and an executive system that handles the coordination and task execution issues. 1

Multi-UAV Network Control through Dynamic Task Allocation: Ensuring Data-Rate and Bit-Error-Rate Support

by Andrew Kopeikin, Sameera S. Ponda, Luke B. Johnson, Jonathan P. How
"... Abstract — A multi-UAV system relies on communications to operate. Failure to communicate remotely sensed mission data to the base may render the system ineffective, and the inability to exchange command and control messages can lead to system failures. This paper describes a unique method to contro ..."
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Abstract — A multi-UAV system relies on communications to operate. Failure to communicate remotely sensed mission data to the base may render the system ineffective, and the inability to exchange command and control messages can lead to system failures. This paper describes a unique method

A Model-Driven Approach for Generating Embedded

by Robot Navigation Control , 2004
"... Real-time embedded systems are time-critical systems that are hard to implement as compared to traditional commercial software, due to the large number of conflicting requirements. This paper describes undergraduate research into the use of advanced modeling techniques to improve the development of ..."
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). The motivation is to model a disaster site that is too dangerous for humans to search for survivors. From the visual model specifications, model interpreters will generate the embedded code that will control two LEGO Mindstorms robots. The mission of the robots is to traverse the hostile terrain and rescue

Model-Driven Testing based on Markov Chain Usage Models in the Automotive Domain

by Sebastian Siegl, Winfried Dulz, Reinhard German, Gerhard Kiffe, Audi Ag , 2009
"... Abstract—The Extended Automation Method (EXAM) is employed by AUDI AG- one of the leading car manufacturers in Europe- to design and execute test cases for the purpose of component and system-testing. Test cases are specified using platform independent UML sequence diagrams. In order to provide an e ..."
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an executable test suite platform dependent code is automatically generated from a formal description. The test case execution itself is mainly performed on Hardwarein-the-loop (HIL) simulators. The main drawback of the existing procedure in EXAM is correlated to the fact that each test case must be created

A MODEL-DRIVEN SOFTWARE COMPONENT FRAMEWORK FOR FRACTIONATED SPACECRAFT

by Abhishek Dubey, Aniruddha Gokhale, Gabor Karsai, William R. Otte, Daniel Balasubramanian, Or Nyako, Johnny Willemsen
"... Abstract: Fractionated spacecraft is a novel space architecture that uses a cluster of small spacecraft modules (with their own attitude control and propulsion systems) connected via wireless links to accomplish complex missions. Resources, such as sensors, persistent storage space, processing power ..."
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that is a special case of a distributed real-time embedded system. Additionally we describe how a model-driven development environment helps with the design and engineering of complex applications for this platform.

Supporting Model-driven Development of Component-based Embedded Systems with Cadena

by Adam Childs, Xianghua Deng, Matthew B. Dwyer, Jesse Greenwald, John Hatcliff, Prashant Kumar, Georg Jung, Venkatesh Ranganath, Robby, Gurdip Singh , 2003
"... Developers of modern distributed, real-time embedded systems are increasingly employing component-based middleware frameworks to cope with the ever increasing size and complexity of mission requirements. Frameworks, such as CORBA and its component model (CCM), raise the level of abstraction at which ..."
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Developers of modern distributed, real-time embedded systems are increasingly employing component-based middleware frameworks to cope with the ever increasing size and complexity of mission requirements. Frameworks, such as CORBA and its component model (CCM), raise the level of abstraction

Multi-Target Assignment And Path Planning For Groups Of Uavs

by Theju Maddula, Ali A. Minai, Marios M. Polycarpou
"... Uninhabited autonomous vehicles (UAVs) have many useful military applications, including reconnaissance, search-and-destroy, and search-and-rescue missions in hazardous environments such as battleelds or disaster areas. Recently, there has been considerable interest in the possibility of using large ..."
Abstract - Cited by 5 (0 self) - Add to MetaCart
Uninhabited autonomous vehicles (UAVs) have many useful military applications, including reconnaissance, search-and-destroy, and search-and-rescue missions in hazardous environments such as battleelds or disaster areas. Recently, there has been considerable interest in the possibility of using

Modeling A System Of UAVs On A Mission

by Predrag Tosic, Myeong-Wuk Jang, Smitha Reddy, Joshua Chia, Liping Chen, Gul Agha - Proc. SCI 2003 (invited session , 2003
"... We outline a parametric model of a system of unmanned aerial vehicles (UAVs) on a mission. The UAVs have to accomplish their mission composed of several tasks as eciently as possible, while satisfying a heterogeneous set of physical and communication constraints. UAVs can be viewed as an example of ..."
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We outline a parametric model of a system of unmanned aerial vehicles (UAVs) on a mission. The UAVs have to accomplish their mission composed of several tasks as eciently as possible, while satisfying a heterogeneous set of physical and communication constraints. UAVs can be viewed as an example

MDDPro: Model-Driven Dependability Provisioning in Enterprise Distributed Real-Time and Embedded Systems

by Sumant Tambe , Jaiganesh Balasubramanian , Aniruddha Gokhale , Thomas Damiano - In Proceedings of the International Service Availability Symposium (ISAS , 2007
"... Abstract Service oriented architecture (SOA) design principles are increasingly being adopted to develop distributed real-time and embedded (DRE) systems, such as avionics mission computing, due to the availability of real-time component middleware platforms. Traditional approaches to fault toleran ..."
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failures of replicated entities. This paper describes MDDPro, a model-driven dependability provisioning tool for DRE systems. MDDPro provides intuitive modeling abstractions to specify failover requirements of DRE systems at different granularities. MDDPro enables plugging in different replica placement

EGNOS-BASED MULTI-SENSOR ACCURATE AND RELIABLE NAVIGATION IN SEARCH-AND-RESCUE MISSIONS WITH UAVS

by P. Molinaa, I. Colominaa, T. V Itoriab, P. F. Silvac, Y. Steblerd, J. Skaloudd, W. Kornuse, R. Pradesf
"... This paper will introduce and describe the goals, concept and overall approach of the European 7th Framework Programme’s project named CLOSE-SEARCH, which stands for ’Accurate and safe EGNOS-SoL Navigation for UAV-based low-cost SAR operations’. The goal of CLOSE-SEARCH is to integrate in a helicopt ..."
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This paper will introduce and describe the goals, concept and overall approach of the European 7th Framework Programme’s project named CLOSE-SEARCH, which stands for ’Accurate and safe EGNOS-SoL Navigation for UAV-based low-cost SAR operations’. The goal of CLOSE-SEARCH is to integrate in a
Results 1 - 10 of 285