著者

松本 佳昭 森 信彰 三田尻 涼 江 鐘偉

出版者

The Society of Life Support Engineering

雑誌

ライフサポート (ISSN:13419455)

巻号頁・発行日

vol.22, no.3, pp.105-111, 2010 (Released:2012-10-16)

参考文献数

22

被引用文献数

3 12

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To prevent various lifestyle-caused diseases, mental health care in daily life is one of the most important issues in recent years. This paper proposes quantitative analysis method of mental stress using heart rate variability (HRV). Concretely speaking, we proposed the geometric figure analytical method of HRV in consideration for respiration sinus arrhythmia (RSA). Then mental stress is quantitative evaluated by analyzing the characteristic of its plots. Experiments were repeated 51 times on 3 healthy male volunteers. The proposed method was confirmed efficiently, because of the measurement time is about half and the measurement dispersion is decreased in comparison with the conventional analysis methods.

著者

アラブシャヒ サイエド アリレザ 江 鐘偉 渡辺 哲陽

出版者

日本AEM学会

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.14, no.3, pp.333-338, 2006-09-10

被引用文献数

1

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The purpose of this report is to introduce and discuss about the design parameters for a segment of a tactile sensor which will be used to read one dot of a braille alphabet. A single segment of a tactile sensor, consisting of a piezoelectric (PVDF) film sandwiched between two elastic materials, is designed. The design parameters, regarding the geometry and Young's modulus of the sensor are introduced. Simulations are used to investigate the influence of the design parameter on the sensor output, and to show the design criterion in order to obtain enough large sensor output. The results show that 1) for obtaining enough large sensor output, the layer, which is closer to the contact point with the dot of a Braille alphabet, should be "thinner" than and have a "similar hardness" to the other layer, 2) the output of sensor is mostly dependent on the bending effect near the PVDF layer and the Clamped structure can encourage more bending.

著者

長南 征二 江 鐘偉 増井 慶次郎

出版者

日本機械学会

雑誌

日本機械学会論文集 C編 (ISSN:03875024)

巻号頁・発行日

vol.60, no.570, pp.p498-505, 1994-02

被引用文献数

1

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Deformation control of a silicon-wafer slicer cutting a crystal ingot is studied analytically. The thin rotating blade is clamped at the outer boundary and prestressed in the radial direction, while the inner periphery is subjected to stationary, distributed in-plane and lateral slicing loads from the workpiece. The deflection of the blade is obtained analytically by introducing the multi-model expansion method, further applying the Galerkin method to the governing equations of the system. Numerical results are presented for an actual SUS 301 blade cutting a 6"-diameter silicon ingot at a speed of 1550 rpm. Two control schemes that maintain the flatness of the rotating blade are examined in detail. In the first scheme, a pair of concentrated lateral forces are applied to the blade to reduce the blade deflection. In the second scheme, a pair of moments are also applied to the blade to improve the flatness of blade. Simulation results obtained show that the application of control moment is more effective than the simple lateral forces to the improvement of flatness of the slicing blade.

著者

松本 佳昭 森 信彰 三田尻 涼 江 鐘偉

雑誌

ライフサポート = / the Society of Life Support Technology [編] (ISSN:13419455)

巻号頁・発行日

vol.24, no.2, pp.62-69, 2012-08-25

参考文献数

14

著者

田中 真美 長南 征二 江 鐘偉 中島 英貴

出版者

日本機械学会

雑誌

日本機械学会論文集. C編 (ISSN:03875024)

巻号頁・発行日

vol.65, no.631, pp.970-976, 1999-03

被引用文献数

4

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This paper is a study on the valuation and mathematical formulation of human touch sensation. First, the feelings of touch are collected on five natural and chemical fabrics through the SD (Semantic Differential) method questionnaires sent to twenty three examinees. The feelings are valued on each fabric by using the weigthed mean on graded factor feelings. The multiple regression analysis is then introduced to represent the overall evaluation of touch on every fabric by a linear function of the valuations on feelings of touch. Next, a soft tactile sensor made of a PVDF (Polyvinylidene Fluoride) film patch and rubber layers is assembled and slid over the same sample fabrics to collect the surface tactile information on the fabrics. The features on the collected data are then extracted by calculating the temporal average of absolute out signal and using the intensity of power spectral density on the medium frequency range. Comparison of the results show that the PVDF sensor well describes the tactile perception of forefingers.