This paper describes construction of sensor network system for human behavior measurement and accumulation in a room. The network system consists of three layers: a sensing layer, a process layer and integration layer...
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ISBN:
(纸本)0819442992
This paper describes construction of sensor network system for human behavior measurement and accumulation in a room. The network system consists of three layers: a sensing layer, a process layer and integration layer. It is capable of distributed processing in each module which is a group of several sensors. The implemented system of "robotic Room 2" based on distributed objects allows not only easy integration and accumulation of sensor information but also parallel execution of both integrated measurement and accumulation system.
This Volume 3523 of the conference proceedings contains 28 papers. Topics discussed include sensorfusion and decentralizedcontrol in roboticsystems, multiagents and hierachial architectures, sensor-fused navigation...
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This Volume 3523 of the conference proceedings contains 28 papers. Topics discussed include sensorfusion and decentralizedcontrol in roboticsystems, multiagents and hierachial architectures, sensor-fused navigation and perception, interfaces for augmented reality, action selection, motion coordination and control and robotic workspace and calibration.
This paper considers the processing of thermal images taken during an arc spraying process. It describes a filtering method for reconstructing an estimate of the required surface temperature from a sequence of images ...
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ISBN:
(纸本)0819442992
This paper considers the processing of thermal images taken during an arc spraying process. It describes a filtering method for reconstructing an estimate of the required surface temperature from a sequence of images that contain unpredictable amounts of blurring and obscuration. A practical use of the filtering to control average surface temperature during metal arc spraying is also described.
This paper presents an experiment in which evolutionary algorithms are used for the development of neural controllers for salamander locomotion. The aim of the experiment is to investigate which kind of neural circuit...
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ISBN:
(纸本)0819434329
This paper presents an experiment in which evolutionary algorithms are used for the development of neural controllers for salamander locomotion. The aim of the experiment is to investigate which kind of neural circuitry can produce the typical swimming and trotting gaits of the salamander, and to develop a synthetic approach to neurobiology by using genetic algorithms as design tool. A 2D bio-mechanical simulation of the salamander's body is developed whose muscle contraction is determined by the locomotion controller simulated as continuous-time neural networks. While the connectivity of the neural circuitry underlying locomotion in the salamander has not been decoded for the moment, the general organization of the designed neural circuits corresponds to that hypothesized by neurobiologists for the real animal. in particular, the locomotion controllers are based on a body central pattern generator (CPG) corresponding to a lamprey-like swimming controller as developed by Ekeberg,(1) and are extended with a limb CPG for controlling the salamander's body. A genetic algorithm is used to instantiate synaptic weights of the connections within the limb CPG and from the limb CPG to the body CPG given a high level description of the desired gaits. A set of biologically plausible controllers are thus developed which can produce a neural activity and locomotion gaits very similar to those observed in the real salamander. By simply varying the external excitation applied to the network, the speed, direction and type of gait can be varied.
It is argued that for real-world applications action selection should be satisficing, i.e. merely 'good enough' rather than optimal. It is then demonstrated that multiple objective decision theory provides a s...
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ISBN:
(纸本)0819429848
It is argued that for real-world applications action selection should be satisficing, i.e. merely 'good enough' rather than optimal. It is then demonstrated that multiple objective decision theory provides a suitable framework for formulating action selection mechanisms that are satisficing. A set of experiments demonstrate the potential advantages of the proposed action selection mechanisms.
In this paper we present two approaches for tracking of people in dynamic environments with a moving sensor system. The trajectories of persons are used to extract simple motion patterns. Object detection and tracking...
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ISBN:
(纸本)0819442992
In this paper we present two approaches for tracking of people in dynamic environments with a moving sensor system. The trajectories of persons are used to extract simple motion patterns. Object detection and tracking is based on range and color information which is provided by a laser range finder and a onmidirectional color camera. Without any predefined person-model the system acquires an internal representation of the person at an initialization phase. This representation is tracked in real-time in dynamic environments. During the tracking procedure illumination conditions axe continously monitored. The tracking approaches were implemented on a robotic wheelchair and evaluated experimentally in different dynamic environments.
This paper describes how variable structure control can be used to describe the overall behavior of multiple autonomous robotic vehicles with simple finite state machine rules. The importance of this result is that we...
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ISBN:
(纸本)0819426415
This paper describes how variable structure control can be used to describe the overall behavior of multiple autonomous robotic vehicles with simple finite state machine rules. The importance of this result is that we can then begin to design provably asymptotically stable group behaviors from a set of simple control laws and appropriate switching points with variable structure control. The ability to prove convergence to a god is especially important for applications such as locating military targets or land mines.
The proceedings contains 24 papers from the conference on sensorfusion and decentralizedcontrol in roboticsystems IV. The topics discussed include: delayed and asequent data in decentralized sensing networks;rover ...
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The proceedings contains 24 papers from the conference on sensorfusion and decentralizedcontrol in roboticsystems IV. The topics discussed include: delayed and asequent data in decentralized sensing networks;rover localization results for the FIDO rover;performance of a distributed robotic system using shared communications channels;people tracking using omnidirectional vision and range information;development of PetRo: a modular robot for petlike applications;integrated virtual space control system utilizing hand gesture for intelligent house.
In the field of civil engineering an effective infernal monitoring of pipes and water storage is very problematic. Normally the sensors used for the task are either fixed or manually movable. Thus they will only provi...
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ISBN:
(纸本)0819426415
In the field of civil engineering an effective infernal monitoring of pipes and water storage is very problematic. Normally the sensors used for the task are either fixed or manually movable. Thus they will only provide locally and temporally restricted information. As a solution an underwater roboticsensor/actuator society is presented. The system is capable of operating inside a fluid environment as a kind of distributed sensory system. The value of the system emerges from the interactions between the members. Through a communication system the society fuses information from individual members and provides a more reliable estimate of the conditions inside water systems. Test results in a transparent demo process consisting of tanks and pipes with a volume of 700 liters are presented.
New generations of modular and reconfigurable roboticsystems with many degrees of freedom can be transformed to achieve different functions, modes of manipulation, and means of mobility resulting in efficient multifu...
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New generations of modular and reconfigurable roboticsystems with many degrees of freedom can be transformed to achieve different functions, modes of manipulation, and means of mobility resulting in efficient multifunctional systems which adapt to complex environments. The design of modular distributed algorithms and architectures for control of these systems is particularly challenging since kinematic and dynamic performance must be maintained throughout a range of alternative physical reconfigurations. The `Tetrobot' is a prototype modular system using parallel, variable geometry truss-like mechanisms which can be reconfigured to create moving platforms, walking machines, manipulator arms, a pipe crawler and other devices. Modular algorithms for distributed control and dynamic redundancy resolution of these systems will be discussed, and the principles of distributed control for modular systems generalize beyond these specific mechanisms. The resulting Tetrobot system has a range of interesting applications including space robotics, construction, mining, medical, undersea, and flexible manufacturing.
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