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Your search keyword '"Hirai, Shinichi"' showing total 510 results
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510 results on '"Hirai, Shinichi"'

117. Magnetic Field Modelling of a Soft Three-Axis Force Sensor

Author

Chathuranga, Damith Suresh, Wang, Zhongkui, Noh, Yohan, Nanayakkara, Thrishantha, and Hirai, Shinichi

Subjects
Morphological computation, fingertip force/torque sensors, Tactile sensing
Abstract

This paper describes the modelling of a soft threeaxis force sensor. The sensor has a cylindrical cantilever beammade of silicone rubber that compress and bend when normaland tangential forces are applied. The displacement of the beam’send is calculated by measuring the change of the magnetic fieldemitted by a permanent magnet embedded in the soft beam.Spring theory and bending theory, are used to calculate thenormal and tangential force components. The normal forcescalculated by the proposed model and the measured values has anerror less than 5% validating the analogy of the sensor to a softcantilever beam under compression and bending. The proposedmathematical model is simple and faster than a finite elementmodel, and accurately represents the non-linear behavior of thesensor’s physical effects to applied loads.

Published
2016

137. Moving Robot on Tree Branches

Author

Hang Dong Thi and Hirai Shinichi

Subjects
Tree (data structure), Theoretical computer science, Computer science, Robot
Published
2017

144. Parameter Optimization for Rolling Motion of Structure Variable Robots

Author

Hirai Shinichi, Wang Minghui, Ma Shugen, Li Bin, and Du Wenjuan

Subjects
021103 operations research, Computer science, Applied Mathematics, Mechanical Engineering, 0211 other engineering and technologies, Structure (category theory), Motion (geometry), 020101 civil engineering, 02 engineering and technology, 0201 civil engineering, Computer Science Applications, Variable (computer science), Control theory, Robot, Simulation
Published
2016

145. A local geometric preserving approach for interior deformation fields measurement from MR volumetric images of human tissues

Author

Penglin Zhang and Hirai Shinichi

Subjects
Image matching, Feature extraction, Tetrahedron, Geometry, Solid modeling, Invariant (mathematics), Algorithm, Blossom algorithm, Finite element method, Mathematics
Abstract

While a variety of different features matching algorithms have been reported in rigid areas, few features matching algorithm used in non-rigid area have been reported. This work is concerned about interior deformation fields measurement of non-rigid, non-uniform human tissue or organs from 3D magnetic resonance volumetric images. In this paper, a local geometric preserving approach was proposed to find homologous features from a given features in MR volume obtained at the initial state. Three dimension invariant moment and geometric preserving property of a local 3D region have been used to design the function which was used to measure the strength of match of the candidate feature pair. Interior density deformation fields is then inferred to use a linear approximate approach in an irregular tetrahedra finite element model. To test the validity of the proposed approach, it is applied to actual MR volumetric images obtained from a volunteer's finger. The primary result is consistent with the fact.

Published
2010

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