Reinforced concrete structures such as bridges, roadways, buildings and dams can suffer serious degradation in harsh environments such as seawater, salt-laden air, and environments where deicing salts are used. Chlori...
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This paper proposes a guide system which uses an intended hand force of a robotic guide for elderly and visually impaired people. In general, we lead these people by the hand with a different way according to the situ...
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ISBN:
(纸本)9781467375559
This paper proposes a guide system which uses an intended hand force of a robotic guide for elderly and visually impaired people. In general, we lead these people by the hand with a different way according to the situation. For example, we lead these people strongly and rapidly for avoiding a dangerous situation. For realizing our proposed system, this paper describes the following two key topics. The first, we analyze a hand movement, which leads the other person in each situation, and investigate the characteristics of it which the follower can estimate the intention of the leader according to the situation. From our investigation, the minimum jerk trajectory model can appropriate the velocity references of a hand movement and timing of peak velocity during one hand motion tends to show the intention of its leader. The second, we design the velocity references of a hand movement based on the analysis results and for verify its effectiveness, we implement the proposed idea to our prototype robotic guide. Using our idea, our guide robot can show the situation of the surrounding environment to its follower by a hand movement.
A theoretical model extended from the Frenkel-Eyring molecular kinetic theory(MKT)was applied to describe the boundary slip on textured *** concept of the equivalent depth of potential well was adopted to characterize...
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A theoretical model extended from the Frenkel-Eyring molecular kinetic theory(MKT)was applied to describe the boundary slip on textured *** concept of the equivalent depth of potential well was adopted to characterize the solid-liquid interactions on the textured *** slip behaviors on both chemically and topographically textured surfaces were investigated using molecular dynamics(MD)*** extended MKT slip model is validated by our MD simulations under various situations,by constructing different complex surfaces and varying the surface wettability as well as the shear stress exerted on the *** slip model can provide more comprehensive understanding of the liquid flow on atomic scale by considering the influence of the solid-liquid interactions and the applied shear stress on the ***,the slip velocity shear-rate dependence can be predicted using this slip model,since the nonlinear increase of the slip velocity under high shear stress can be approximated by a hyperbolic sine function.
The aim of this research is to improve the electrical performance of the nanometer copper film by laser micro shock processing. The nanometer copper film was prepared by the magnetron sputtering. The mechanism of lase...
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According to the creep deformation of oil film bearing Babbitt in operation process, the creep test method of Babbitt was put forward, the factors about influencing the results of creep test were analysed, and the cre...
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Microstructural variations between the bond line and the base alloy of welds have been reported in various nickel-base superalloys that have found their applications as structural materials in aero- and land-based eng...
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The paper aims to study the influence of high temperature processing on the substructure of laser shock processed titanium alloy. The titanium alloy specimens were first treated by laser shock processing (LSP), then t...
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The aim of this research is to improve the hot corrosion resistance of In718 superalloy by laser shock processing. Specimens were treated by laser shock processing on the whole surface. The hot corrosion resistance be...
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