Results 141 to 150 of about 1,875 (179)
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Neuro-control of unmanned underwater vehicles
International Journal of Systems Science, 2006Unmanned underwater vehicles (UUVs) typically operate in uncertain and changing environments. Since the dynamics of UUVs are highly nonlinear and their hydrodynamic coefficients vary with different operating conditions, a high-performance control system of a UUV is needed to have the capacities of learning and adaptation to the variations in the UUV's ...
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Guidance of unmanned underwater vehicles: experimental results
Proceedings 2000 ICRA. Millennium Conference. IEEE International Conference on Robotics and Automation. Symposia Proceedings (Cat. No.00CH37065), 2002This paper addresses the problem of guidance of unmanned underwater vehicles (UUVs). In the framework of a two layered hierarchical architecture decoupling the system dynamics and kinematics, two guidance laws for approaching a target with the desired orientation and following an environmental feature have been designed with Lyapunov-based techniques ...
Massimo Caccia +2 more
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Sonar-based guidance of unmanned underwater vehicles
Advanced Robotics, 2001This paper addresses the problem of the design and coordination of guidance and sonar-based motion estimation algorithms for unmanned underwater vehicles. In the framework of a two layered hierarchical architecture uncoupling the system's dynamics and kinematics, a couple of guidance laws for approaching a target with the desired orientation and ...
Caccia M, Bruzzone G, Veruggio G
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Toward a generalized architecture for unmanned underwater vehicles
2011 IEEE International Conference on Robotics and Automation, 2011A common feature of unmanned vehicles is their complexity, which grows apace and provides its own challenges. Frameworks for managing this growing complexity have always been one of the key aspects of designing an unmanned vehicle. In this paper, a generalized architecture is proposed to not only address the complexity in developing an unmanned vehicle,
Changlong Lin +3 more
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Morphing hull implementation for unmanned underwater vehicles
Smart Materials and Structures, 2009Benefits of aircraft morphing might be applicable to unmanned undersea vehicles (UUVs) as well. UUVs may perform under a wide variety of operational requirements involving slow speeds, moderate speed travel, and high speed attack/escape during execution of a single mission.
Russell Rufino +2 more
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Aerial-underwater systems, a new paradigm in unmanned vehicles
2017 International Conference on Unmanned Aircraft Systems (ICUAS), 2017Unmanned Aerial-Underwater Vehicles (UAUVs) arise as a new kind of unmanned system capable of performing equally well in multiple mediums and seamlessly transitioning between them. This work focuses in the modeling and trajectory tracking control of a special class of air-underwater vehicle with full torque actuation and a single thrust force directed ...
Diego A. Mercado +2 more
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Surveillance unmanned underwater vehicle
Proceedings of OCEANS'94, 2002A self-powered unmanned underwater vehicle (UUV) outfitted with forward looking, side scan sonar and laser imaging systems will provide a highly effective clandestine mine survey. A similarly outfitted system provided a new cost effective commercial site survey and pipeline inspection capability. >
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A quadrotor-like unmanned underwater vehicle
2016 Chinese Control and Decision Conference (CCDC), 2016A quadrotor-like unmanned underwater vehicle, named QUUV, is presented in this paper. It has four thrusters, which can be inclined configuration. It is designed and implemented based on hydrodynamic optimization. The mathematical model is built and the difference with ordinary underwater vehicles is discussed.
Jingwei Bian, Ji Xiang, Huilin Liang
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Bottom Following for Unmanned Underwater Vehicles
IFAC Proceedings Volumes, 1998Abstract The problem of high precision bottom-following in the proximity of the seabed for open-frame Unmanned Underwater Vehicles (UUVs) is addressed in this paper. The suggested approach consists of the integration of a two-layered guidance and control system with an active multi-hypothesis extended Kalman filter able to estimate the motion of the ...
M. Caccia +3 more
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Piezocomposites for unmanned underwater vehicle applications
SPIE Proceedings, 2015This paper reviews feasibility of piezoceramic-polymer composite, so called piezocomposite, materials for UUV sonar application. Focus is not only placed on high electro-acoustic transformation performance, also on mass productivity, which is achieved by introducing Powder Injection Molding(PIM) process.
Hoseop Shin +4 more
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