This paper presents a 6-DOF cable-driven robot with eight *** on the cables should be limited and larger than *** on the static model,an optimization algorithm is presented to calculate the cable tensions,which could ...
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This paper presents a 6-DOF cable-driven robot with eight *** on the cables should be limited and larger than *** on the static model,an optimization algorithm is presented to calculate the cable tensions,which could guarantee the minimum power of the motors,and the Wrench Feasible Workspace(WFW) of the robot is analyzed according to the optimization algorithm.
For controlling the prosthetic hand by only electroencephalogram (EEG), it has become the hot spot in robotics research to set up a direct communication and control channel between human brain and prosthetic hand. In ...
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ISBN:
(纸本)9781934272886
For controlling the prosthetic hand by only electroencephalogram (EEG), it has become the hot spot in robotics research to set up a direct communication and control channel between human brain and prosthetic hand. In this paper, the EEG signal is analyzed based on multi-complicated hand activities. And then, two methods of EEG pattern recognition are investigated, a neural prosthesis hand system driven by BCI is set up, which can complete four kinds of actions (arm's free state, arm movement, hand crawl, hand open). Through several times of off-line and on-line experiments, the result shows that the neural prosthesis hand system driven by BCI is reasonable and feasible, the C-support vector classifiers-based method is better than BP neural network on the EEG pattern recognition for multi-complicated hand activities.
Illumination variation is one of the critical factors affecting face recognition rate. In the paper, we propose a novel Retinex method based on bilateral filtering to compensate the illumination for face image. The pr...
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We present a novel object detection framework that uses the local shape patches features combining the interclass global features information. A supervised local model learning architecture is proposed: a novel intere...
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We present a novel object detection framework that uses the local shape patches features combining the interclass global features information. A supervised local model learning architecture is proposed: a novel interest point descriptor is proposed and applied to detect the local shape patches, the local shape patches are formed by chains of several connected contour segments. Then the object local contour parts model are learned from a small set of training images. In order to make the local contour patch model is invariant to rotation and translation, the local contour patch descriptor is represented by modified shape context. By adding the edge orientation information and interclass global information, the power of differentiating mismatches is increased, especially detecting the objects existing similar parts. Both experiments on image feature point matching and object detection comparing with other feature descriptors are carried out in order to validate the proposed method.
Cell stiffness is closely related to human health and diseases. Measuring the mechanical property of individual cells may help us to understand the mechanism of diseases at cell level and provide new methods for disea...
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Cell stiffness is closely related to human health and diseases. Measuring the mechanical property of individual cells may help us to understand the mechanism of diseases at cell level and provide new methods for disease diagnosis and personalized treatment. In this paper, the poly-l-lysine was used to immobilize Burkitt's lymphoma (BL) cells onto the glass substrate for being imaged in fluid by atomic force microscopy (AFM). In nearphysiological environment, with the use of AFM, the high resolution morphology image of BL cells was obtained and the mechanical property of BL cells was measured. The detailed processes of the sample preparation and computing the Young's modulus of BL cells from force curves were presented. The experimental result indicated that the Young's modulus of BL cells fixed by glutaraldehyde was about 1MPa. These results may provide useful knowledge for understanding the mechanism of lymphoma and the application of AFM to cancer diagnosis.
This paper presents a novel strategy for multiple autonomous underwater vehicles (AUVs) to trace a chemical plume and to identify its source location in a simulated fluid-advected environment with scales of 100 meters...
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An experimental study was conducted to investigate the feasibility of fabricating relatively long nanochannels on hard and brittle silicon dioxide surface using atomic force microscopy (AFM) based lithography. Specifi...
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A semi-physical simulation framework for multiple unmanned underwater vehicles' (UUVs) coordinate operation, which can complete large-scale reconnaissance in civil, academic military application, is presented. The...
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A semi-physical simulation framework for multiple unmanned underwater vehicles' (UUVs) coordinate operation, which can complete large-scale reconnaissance in civil, academic military application, is presented. The structure of simulation framework consists of virtual environment unit, vision display unit and UUV control unit. The primary motivation of this simulation framework is test the UUV control unit in order to transplant the control unit in real UUV fleetly and reliably. The software architecture of control unit which is based on multi-agent system, consists of coordination layer, task layer, behavior layer and physical layer, is developed in real-time operation system VxWorks. The significant power of the semi-physical simulation framework is provide a platform to validate the coordinate operation and control strategy of UUV in dynamic environment, and the maturity and stability of the entire control system.
In order to fulfill high accurately control of HOV' dynamic positioning on the condition of multiple uncertainties, and overcome the guarantee of the H ∞ robust controller, a robust controller based on structure...
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In order to fulfill high accurately control of HOV' dynamic positioning on the condition of multiple uncertainties, and overcome the guarantee of the H ∞ robust controller, a robust controller based on structure singular value theory was designed for deep sea HOV. Dynamic positioning test and comparison test between difference control arithmetic were carried out on the semi-physical simulation platform. The results showed that the controller designed take effect on the disturbance and parameter changing of HOV.
This paper presents an amphibious snake-like robot's design. This amphibious snake-like robot, mainly composed by 8 Modular Universal Units, is waterproof and can move smoothly in the water while pressurized with ...
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This paper presents an amphibious snake-like robot's design. This amphibious snake-like robot, mainly composed by 8 Modular Universal Units, is waterproof and can move smoothly in the water while pressurized with O-rings and other essential accessories. The control equations for each gait are introduced. Due to its special joint design and the feature of being densely covered by vanes, the robot is endowed with an omnipotent ability of amphibious locomotion. Experiments both on the land and in the water have been made to testify the function of the amphibious snake-like robot.
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