the proceedings contain 100 papers. the topics discussed include: active electromagnetic damping for a lightweight electric vehicles;an engineering design of real-time fault monitoring method for power-on-wheel electr...
ISBN:
(纸本)9781479964666
the proceedings contain 100 papers. the topics discussed include: active electromagnetic damping for a lightweight electric vehicles;an engineering design of real-time fault monitoring method for power-on-wheel electric vehicles;4-wheel independent in-wheel-motor drive and independent steering electric vehicle safety analysis method based on mass re-distribution experiment;robotics audition using kinect;topological mapping for robot navigation using affordance features;utilization of terrain elevation map in SLAM for unmanned aircraft;augmented reality behind the wheel - human interactive assistance by mobile robots;human-driven multi-robot design process - for social interactions with children on complex environments;and a comparison of sampling-based path planners for a grape vine pruning robot arm.
this paper describes a practical approach for dynamic collision avoidance for a position-controlled anthropomorphic manipulator. the collision avoidance problem is solved as a virtual spring-damper force control probl...
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ISBN:
(纸本)9781617387197
this paper describes a practical approach for dynamic collision avoidance for a position-controlled anthropomorphic manipulator. the collision avoidance problem is solved as a virtual spring-damper force control problem [16]. A 3D Time-Of-Flight (TOF) camera is used as a proximity sensor to identify the position of the obstacle near the elbow of the manipulator. the dynamic collision avoidance algorithm forms a virtual spring-damper around an obstacle which is near to the elbow of the manipulator. the inverse kinematics of the manipulator is solved analytically [17], in which the redundancy is used to avoid the obstacle. the experimental results show that the dynamic collision avoidance algorithm along withthe 3D TOF camera can be used to avoid dynamic obstacle.
this paper presents an open source robot simulation environment based on the robot operating system (ROS). To help novice to learn robotics, we have designed several important experiments that most robotics beginners ...
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Path planning in a complex dynamic environment is one of the key subsystems in an autonomous vehicle. this paper presents an extension of Model Predictive Path Integral (MPPI) control method which is able to take movi...
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this paper presents how the addition of via-points can improve the state-of-the-art trajectory planning towards lower energy consumption and/or lower travel time. In contrast to existing approaches using trajectory in...
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ISBN:
(纸本)9789897583049
this paper presents how the addition of via-points can improve the state-of-the-art trajectory planning towards lower energy consumption and/or lower travel time. In contrast to existing approaches using trajectory interpolation methods like B-splines, exclusively standard commands of commonly available robotic systems are used in order to get practicable results. the system's energy demand for a given trajectory is determined based on a model of system energy characterized by low complexity. Trajectory profiles are obtained from original robot trajectory planning by using hardware in the loop. therefore, results can directly be formulated in machine code. Experimental results demonstrate the effectiveness of the proposed approach. Depending on the given task, energy savings up to 17.3 % at equal travel time and time savings up to 13.3 % compared to initial PTP motion are possible. the approaches presented are applicable to any robotic application that utilizes PTP motions, e. g. pick-and-place or spot welding tasks.
this paper investigates the progression of human hand trajectory variabilities during a pick-and-place task. A user study is conducted and human hand positions are tracked optically. Standard deviations of human hand ...
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ISBN:
(纸本)9789897583803
this paper investigates the progression of human hand trajectory variabilities during a pick-and-place task. A user study is conducted and human hand positions are tracked optically. Standard deviations of human hand positions over all trajectories within a trial are computed point-wise orthogonally to the direct path between start and goal positions. Statistical tests reveal a decrease of standard deviations from hand start to goal positions. Moreover, stronger variations of standard deviations are noted in during the center part of the trajectories. Contrary to expectations, a longitudinal study design does not reveal learning effects in terms of reduction of trajectory variabilities. the results suggest, that uncertainties of human hand positions increase withthe distance to a goal location and could constitute a larger risk for collisions within a cooperative human-robot pick-and-place scenario, e.g. assembly.
this paper presents an approach to the formal verification of safety properties of the behaviour-based control network of the mobile outdoor robot RAYON. In particular, we consider behaviours that are used for the com...
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this paper presents an approach to the formal verification of safety properties of the behaviour-based control network of the mobile outdoor robot RAYON. In particular, we consider behaviours that are used for the computation of the projected vehicle's velocity from obstacle proximity sensor data and inclination information. We describe how this group of behaviours is implemented in the synchronous language Quartz in order to be formally verified using model checking techniques of the Averest verification framework. Moreover, by integrating the automatically generated and verified code into the behaviour network, it can be guaranteed that the robot slows down and stops as required by the given safety specifications.
Many mobile robots nowadays use thermal imaging cameras (TICs) in order to enhance the environment model that is created during exploration tasks. In conventional thermography, thermal images always have to be careful...
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ISBN:
(纸本)9789897581984
Many mobile robots nowadays use thermal imaging cameras (TICs) in order to enhance the environment model that is created during exploration tasks. In conventional thermography, thermal images always have to be carefully revised by human operators, which is not practicable in autonomous applications. Unknown surface emissivities are the main source of misinterpretations in thermal images. In this work, we present two methods dealing withthese misinterpretations by exploiting the TIC's changing point of view. While the first approach classifies the regarded material in order to estimate improved surface temperature values, the second one is capable of detecting and removing thermal reflections. the spatial relationship between the thermal images and the regarded surface is made by using a rigidly mounted sensor stack consisting of a TIC and a 3D laser range finder, whose extrinsic calibration is described. During evaluation, we demonstrate the functionality of both approaches.
作者:
Zamzami, ZiadBen Amar, FaizUPMC Paris VI
Sorbonne Univ Inst Syst Intelligents & Robot ISIR CNRS UMR 7222 Boite Courrier 1734 Pl JUSSIEU F-75252 Paris France
Swing-up and throwing tasks for underactuated manipulators are examples of dynamic motions that exhibit highly nonlinear coupling dynamics. One of the key ingredients for such complex behaviors is motion coordination ...
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ISBN:
(纸本)9789897581984
Swing-up and throwing tasks for underactuated manipulators are examples of dynamic motions that exhibit highly nonlinear coupling dynamics. One of the key ingredients for such complex behaviors is motion coordination to exploit their passive dynamics. Despite the existence of powerful tools such as nonlinear trajectory optimization, they are usually treated as blackboxes that provide local optimal trajectories. We introduce the Dynamical Coupling Map (DCM), a novel graphical technique, to help gain insight into the output trajectory of the optimization and analyze the capability of underactuated robots. the DCM analysis is demonstrated on the swing up motion of a simplified model of a gymnast on high bar. the DCM shows in a graphical and intuitive way the pivotal role of exploiting the nonlinear inertial forces to reach the unstable equilibrium configuration while taking into account the torque bounds constraints. In this paper, we present the DCM as a posteriori analysis of a local optimal trajectory, found by employing the direct collocation trajectory optimization framework.
In this paper, we focus on the problem of optimally placing a mixture of static and PTZ cameras based on the resolution requirement, this configuration will be useful later cameras planning. the static cameras used fo...
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ISBN:
(纸本)9789897580390
In this paper, we focus on the problem of optimally placing a mixture of static and PTZ cameras based on the resolution requirement, this configuration will be useful later cameras planning. the static cameras used for detecting an object or an event, this result is used to select the best PTZ camera within the network to identify or recognize this moving object or event. In our work the monitoring area is represented by a grid of points distributed uniformly or randomly (S. thrun, 2002), then using surface-projected monitoring area and camera sensing model we develop a binary integer programming algorithm. the results of the algorithm are applied successfully to a variety of simulated scenarios.
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