The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform
Dario Floreano - One of the best experts on this subject based on the ideXlab platform.
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An indoor flying platform with collision robustness and self-recovery
2010 IEEE International Conference on Robotics and Automation, 2010Co-Authors: Adam Klaptocz, Jean-christophe Zufferey, Grégoire Boutinard-rouelle, Adrien Briod, Dario FloreanoAbstract:This paper presents a new paradigm in the design of indoor flying robots that replaces collision avoidance with collision robustness. Indoor flying robots must operate within constrained and cluttered environments where even nature's most sophisticated flyers such as insects cannot avoid all obstacles and should thus be able to withstand Collisions and recover from them autonomously. A prototype platform specifically designed to withstand Collisions and recover without human intervention is presented. Its dimensions are optimized to fulfill the varying constraints of aerodynamics, robustness and self-recovery, and new construction techniques focusing on shock absorption are presented. Finally, the platform is tested both in-flight and during Collisions to characterize its collision robustness and self-recovery capability.
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ICRA - An indoor flying platform with collision robustness and self-recovery
2010 IEEE International Conference on Robotics and Automation, 2010Co-Authors: Adam Klaptocz, Jean-christophe Zufferey, Grégoire Boutinard-rouelle, Adrien Briod, Dario FloreanoAbstract:This paper presents a new paradigm in the design of indoor flying robots that replaces collision avoidance with collision robustness. Indoor flying robots must operate within constrained and cluttered environments where even nature's most sophisticated flyers such as insects cannot avoid all obstacles and should thus be able to withstand Collisions and recover from them autonomously. A prototype platform specifically designed to withstand Collisions and recover without human intervention is presented. Its dimensions are optimized to fulfill the varying constraints of aerodynamics, robustness and self-recovery, and new construction techniques focusing on shock absorption are presented. Finally, the platform is tested both in-flight and during Collisions to characterize its collision robustness and self-recovery capability.
Adam Klaptocz - One of the best experts on this subject based on the ideXlab platform.
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An indoor flying platform with collision robustness and self-recovery
2010 IEEE International Conference on Robotics and Automation, 2010Co-Authors: Adam Klaptocz, Jean-christophe Zufferey, Grégoire Boutinard-rouelle, Adrien Briod, Dario FloreanoAbstract:This paper presents a new paradigm in the design of indoor flying robots that replaces collision avoidance with collision robustness. Indoor flying robots must operate within constrained and cluttered environments where even nature's most sophisticated flyers such as insects cannot avoid all obstacles and should thus be able to withstand Collisions and recover from them autonomously. A prototype platform specifically designed to withstand Collisions and recover without human intervention is presented. Its dimensions are optimized to fulfill the varying constraints of aerodynamics, robustness and self-recovery, and new construction techniques focusing on shock absorption are presented. Finally, the platform is tested both in-flight and during Collisions to characterize its collision robustness and self-recovery capability.
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ICRA - An indoor flying platform with collision robustness and self-recovery
2010 IEEE International Conference on Robotics and Automation, 2010Co-Authors: Adam Klaptocz, Jean-christophe Zufferey, Grégoire Boutinard-rouelle, Adrien Briod, Dario FloreanoAbstract:This paper presents a new paradigm in the design of indoor flying robots that replaces collision avoidance with collision robustness. Indoor flying robots must operate within constrained and cluttered environments where even nature's most sophisticated flyers such as insects cannot avoid all obstacles and should thus be able to withstand Collisions and recover from them autonomously. A prototype platform specifically designed to withstand Collisions and recover without human intervention is presented. Its dimensions are optimized to fulfill the varying constraints of aerodynamics, robustness and self-recovery, and new construction techniques focusing on shock absorption are presented. Finally, the platform is tested both in-flight and during Collisions to characterize its collision robustness and self-recovery capability.
Denis Jouan - One of the best experts on this subject based on the ideXlab platform.
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Hidden and open heavy flavor production at $\sqrt{s}=200$ GeV in PHENIX
2017Co-Authors: Denis JouanAbstract:Heavy flavor production is a sensitive probe of all stages in the evolution of a heavy ion collision system, and in particular heavy quarkonia could be direct probes of quark deconfinement in A+A Collisions. The characterization of the competing effects on the yield in heavy ion Collisions (like energy loss or suppression by Collisions with initial partons or co-movers) requires a detailed description of the production, from p+p and p+A to A+A Collisions. The unique versatility and increasing performance of the BNL/RHIC collider has provided several beams combinations at √sNN from 7 to 500 GeV. Also, improvements of the PHENIX experiment allow deeper study than has been previously published. This talk aims at presenting recent PHENIX results on J/ψ, ψ’ and open charm and beauty productions at √sNN = 200GeV in several collision systems and focus on the additional degrees of freedom in p+A and A+A Collisions have compared to p+p Collisions.
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Hidden and open heavy flavor production at $\sqrt{s}$ = 200 GeV in PHENIX
2017Co-Authors: Denis JouanAbstract:Heavy flavor production is a sensitive probe of all stages in the evolution of a heavy ion collision system, and a direct probes of quark deconfinement. Improvements of the PHENIX experiment allow deeper study than has been previously published. This talk aims at presenting the recent PHENIX results on J/ψ, ψ' and open charm and beauty productions at √ s N N = 200GeV in several collision systems, and focus on the additional degrees of freedom in p+A and A+A Collisions have compared to p+p Collisions.
Jae-bok Song - One of the best experts on this subject based on the ideXlab platform.
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Collision detection for safe human-robot cooperation of a redundant manipulator
2014 14th International Conference on Control Automation and Systems (ICCAS 2014), 2014Co-Authors: Jae-bok SongAbstract:Human-robot cooperation have a potential risk of collision between a human and a robot, and collision detection is one of the most practical solutions to ensure human safety during this cooperation. However, Collisions during human-robot cooperation cannot be reliably detected using conventional collision detection methods because collision forces and intended interaction forces cannot be distinguished from each other. In this study, we propose a collision detection method that can be used to distinguish Collisions from intended task force at the end-effector. To this end, we developed a collision detection index that is decoupled from the intended external force applied for human-robot cooperation. The proposed method was verified through several experiments, and experimental results show that Collisions can be detected regardless of the presence of physical contact between humans and robots for cooperation.
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Novel collision detection index based on joint torque sensors for a redundant manipulator
IEEE International Conference on Intelligent Robots and Systems, 2013Co-Authors: Sang-duck Lee, Young Loul Kim, Jae-bok SongAbstract:Human-robot collision has drawn increasing attention in recent years and collision safety can be improved by successfully detecting Collisions between a human and a robot. For a manipulator working in human environments, Collisions usually occur at the manipulator body while the robot performs a contact task using its end-effector to interact with the environment. Therefore, both collision force and the force on the end-effector contribute to the external torques which can be estimated from the robot dynamics and the joint torques measured by the joint torque sensors, which means whether or not a collision has occurred cannot be reliably determined using this estimation. In this study, we propose a novel collision detection index to detect Collisions independently of the end-effector force of a redundant manipulator equipped with joint torque sensors. Using the null space projection of a redundant manipulator, the collision detection index can be expressed as a function of the torque generated by a collision and the manipulator configuration. The proposed index is verified through various simulations. Simulation results show that Collisions can be reliably detected regardless of the presence of the end-effector forces even in situations with external torques contaminated by substantial error.
Amos Yarom - One of the best experts on this subject based on the ideXlab platform.
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entropy production in Collisions of gravitational shock waves and of heavy ions
Physical Review D, 2008Co-Authors: Steven S Gubser, Silviu S Pufu, Amos YaromAbstract:We calculate the area of a marginally trapped surface formed by a head-on collision of gravitational shock waves in AdS{sub D}. We use this to obtain a lower bound on the entropy produced after the collision. A comparison to entropy production in heavy-ion Collisions is included. We also discuss an O(D-2) remnant of conformal symmetry, which is present in a class of gravitational shockwave Collisions in AdS{sub D} and which might be approximately realized (with D=5) in central heavy-ion Collisions.
