著者

陶 キン 萩原 一郎 呉 卓〓

出版者

一般社団法人日本機械学会

雑誌

日本機械学会関東支部総会講演会講演論文集

巻号頁・発行日

vol.2004, no.10, pp.195-196, 2004-03-03

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Recently origami technique is being applied to many industrial products. For example, a new kind of beverage container made by origami structure has been introduced and proved that is can be easily crushed after usage. However, since this structure is only designed from origami theory, its function especially external appearance does not meet human requirements very well. Thus, in this research, starting from the view of industrial design theory, the structure of beverage container is redesigned by the technology of subdivision method. Furthermore, rapid prototyping system is used to produce the new model. Study results indicate that the beverage container got in this study has a much better performance.

著者

三浦 登

出版者

一般社団法人日本機械学会

雑誌

日本機械学会関東支部総会講演会講演論文集

巻号頁・発行日

vol.2004, no.10, pp.197-198, 2004-03-03

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The structure model made of wire can express a beam, a truss, a Rahmem construction, a joint component, a shear panel, various kinds of joint, a link, etc. If model rules are relaxed and the scale factor of length and the scale factor of flexural rigidity are chosen independently, the wire model which can be handled with fingers can visualize the deformation mode of real structure, and can express the rigidity. In this case, the model rules and the magnification of a deformation are explained. This wire model is regarded as the physical feeling-media which connect the real world of structure and the virtual world of CAE, and is a simulation tool and a thinking tool.

著者

松崎 亮介 轟 章 島村 佳伸 小林 英男

出版者

一般社団法人日本機械学会

雑誌

日本機械学会関東支部総会講演会講演論文集

巻号頁・発行日

vol.2004, no.10, pp.205-206, 2004-03-03

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Safety of automobiles is increasingly demanded. To prevent burst of tires, smart tires are currently under development The embedded sensor enables highly precise measurement of road surface friction, and the precise friction measurements make more efficient anti-blocking-system (ABS). In a previous study, the authors proposed a new wireless strain monitoring method that adopts the tire itself as a sensor, with an oscillator circuit. This method is very simple and useful, but it requires a battery to activate the oscillator circuit. In the present study, the previous method for wireless tire monitoring is improved to produce a passive wireless sensor. The capacitance change of tire causes changes of the tuning frequency. This change of the tuned radio wave enables us to measure the applied strain of the specimen wirelessly, without any power supply from outside. This new passive wireless method is applied to a specimen and the static applied strain is measured.

著者

高木 清志 佐藤 宏司

出版者

一般社団法人日本機械学会

雑誌

日本機械学会関東支部総会講演会講演論文集

巻号頁・発行日

vol.2004, no.10, pp.201-202, 2004-03-03

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This paper deals with damage detection and vibration control of a new smart board designed by mounting the piezoelectric fibers with metal core on the surface of the CFRP composite. The damage of the board is identified on the assumption that the piezoelectric fibers using a sensor and actuators are broken at the damaged location simultaneously. A finite element model a CFRP cantilever is established and the damage location is identified using the input-output signals. Furthermore, the liner fractional transformation (LFT) is formulated considering the damage location and the gain-scheduled controller considering the location is designed. The control performance of the proposed method is verified by simulation.

著者

岩崎 篤 桑原 秀剛 轟 章 杉谷 恒也

出版者

一般社団法人日本機械学会

雑誌

日本機械学会関東支部総会講演会講演論文集

巻号頁・発行日

vol.2004, no.10, pp.207-208, 2004-03-03

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This research is about a statistical diagnostic method for a structural health monitoring which is applicable to existing structures from the present moment. In this method, structural condition is statistically diagnosed by change of a response surface which is regression model of sensor's outputs. Change of response surface is statistically tested with F-test. In the F-test, a threshold value of normal/troubled condition is simply decided from a theoretical F-probability distribution. Therefore, this diagnostic method only requires data of intact condition and does not require the complicated modeling and information of troubled condition. To confirm the effectiveness of the presented method, health monitoring of jet fan is conducted. Load cells are mounted to a supporting system of the jet fan. Response surface is calculated from vibration data measured by the load cells. As a result, structural condition of the jet fan is successfully diagnosed with the method.

著者

馬場 尚一郎 堀 政義 佐藤 建樹

出版者

一般社団法人日本機械学会

雑誌

日本機械学会関東支部総会講演会講演論文集

巻号頁・発行日

vol.2003, no.9, pp.61-62, 2003-03-13

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On Dynamic-type ice storage system, the continuously preventing technique of the ice growing and adhering to the pipe wall from supercooled releaser to Supercooling chiller is proposed. -2.0 degree level supercooled water cooled by the evaporator of an electric refrigerator is able to be changed to sherbet ice perfectly by the supercooled releaser. Heating (less than 100W) the plastic pipe prevents the ice growing and adhering. 50USRT level experiment results are discussed and the stability prevention of the ice growing and adhering condition is shown.

著者

内山 良治 重田 修作 亀山 寛史 高橋 良彦

出版者

一般社団法人日本機械学会

雑誌

日本機械学会関東支部総会講演会講演論文集

巻号頁・発行日

vol.2007, no.13, pp.289-290, 2007-03-15

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Landing control of a humanoid robot is proposed to soften the shock when a robot jumped from a step. The designed actuator is using a cushion mechanism with a torsion spring. It was confirmed that the robot was able to land on a hard floor without breakage.