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In order to reduce noise and vibration in switched reluctance motors (SRM), many kinds of commutation methods have been proposed. One of them is well-known as 2-stage commutation method. However, it has a defect which is revealed particularly when SRM is operated at high speed and high load condition. In this study, through the magnetic-structural coupled analysis using FEM and the mathematical analysis...
In this paper, we propose an interactive desk lamptype projection system which provides a creative workspace for editing both digital and physical contents. To narrow the sense of difference between digital and physical contents, we implement a multi-touch interface for convenient digitalization of physical contents and modification of digital contents. Furthermore, we provide visual feedback directly...
We analyzed the cell-to-module power conversion loss (CTM power loss) of industrial monocrystalline- (mono-Si) and multi-crystalline-silicon (multi-Si) solar cells. To reduce the CTM power loss of industrial solar cells by improving the optical losses, we investigated the effect of spacing between cells in a PV module by quantum efficiency measurement.
In this paper, we developed a smart jacket using a drop & play interface to control media devices by using a touchpad embedded in the jacket. The inner circuit of the system is made by using transfer printing circuit technique to increase the durability of the system.
In this paper, we propose a process on forming durable and flexible circuits directly on textile using transfer printing technology. This process allows electronic textiles to demonstrate stable performance in the presence of physical stress, and allows us to implement high resolution textile circuits, compatible with variety of commercially-off-the-shelf chips. Using our technology, a flexible, wearable,...
Battery exhaustion attack is a ldquodenial of servicerdquo attack on mobile devices, causing more battery discharge than normally necessary. The excessive discharge arises out of the limitation in battery capacity. Researches have been conducted to discover the cause of the abnormal usage of handset battery by employing power estimation techniques. It is also important, however, to automatically respond...
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