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Kaneyama T.,Automotive Electronics Development Center | Kondo R.,Advanced Technology R and nter
Mitsubishi Electric Advance | Year: 2014

We have developed a new isolated AC/DC converter for electric vehicle on-board chargers. It consists of an AC/DC converter with Gradationally Controlled Voltage Inverter (GCVI AC/DC converter) and an isolated Zero-Voltage-Switching (ZVS) DC/DC converter, each of which is optimally controlled to convert in a highly efficient means. As a result, the new on-board charger has achieved a power conversion efficiency of over 94%.

Domae Y.,Advanced Technology R and nter
Mitsubishi Electric Advance | Year: 2013

We have developed a 3-D sensing technology suitable for industrial robots. The motion stereo method is capable of 3-D measurement using only one camera, and thus is a useful and cost-effective method; however, its application to industrial robots has been impractical because of the difficulty in synchronizing the timing between taking an image and capturing the position. We propose an improved motion stereo method that has overcome the problem by using images asynchronously captured during the motion. This method achieves stable 3-D measurement with an S/N ratio improved by 16 times and a noise level reduced by 94% compared to the conventional method.

Oh M.O.,Hanyang University | Oh M.O.,Advanced Technology R and nter | Kim S.H.,Hanyang University
Polymer (Korea) | Year: 2016

From poly(lactide) (PLA) and poly(ethylene carbonate) (PEC) synthesized using Co2, a PLA/PEC blending film is prepared by melt extrusion and then drawn to uniaxial orientation with various draw ratios. The structural conformation was confirmed and the mechanical, thermal and barrier properties were investigated. It was confirmed that the PLA/PEC blending sheet and films were composed of α′ phase form. The strain-induced crystallization and molecular orientation of PLA/PEC films of α′ phase increased with increasing the draw ratio. It improves the physical properties of the film. With amorphous PEC blending, the mechanical properties of PLA/PEC blending films were slightly lower than those of net PLA films, however, the flexibility and barrier properties were higher. In this study, the PLA/PEC blending film is expected to be commercialized as an ecofriendly flexible packing film. © 2016 The Polymer Society of Korea. All rights reserved.

Oh M.O.,Hanyang University | Oh M.O.,Advanced Technology R and nter | Kim S.H.,Hanyang University
Polymer International | Year: 2014

Uniaxially drawn polylactide (PLA) films were prepared using various draw ratios (2, 3, 4 and 4.5) at a constant draw rate and temperature. It was confirmed that the conformational structure of the PLA films prepared using the uniaxial drawing process was composed of the α'-phase form. The conformational structure deformation of α'-phase PLA films, according to the various draw ratios used, was investigated in terms of strain-induced crystalline behavior and molecular orientation analysis. It is of utmost importance to confirm the α'-phase structural deformation caused by the uniaxial drawing process because it directly relates to the characteristics of PLA films. The conformational structure deformations of the α'-phase, created by uniaxial drawing, led to improved mechanical properties, as evident from mechanical testing and dynamic mechanical analyses results. © 2013 Society of Chemical Industry.

Yonezawa T.,Advanced Technology R and nter | Kawajiri K.,Advanced Technology R and nter
Mitsubishi Electric Advance | Year: 2014

A new method has been proposed and experimentally verified for evaluating the amount of adhered fuel when the fuel spray is injected from an automotive injector and impinges on the wall surface. It has been confirmed that the proposed method can describe the relationship between the incident angle of the spray droplet and the amount of adhered fuel on the wall, which is not possible by the conventional simulation.

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