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In many cases, the moving speed of xy-stages influences the productivity of industrial machines; thus, it is very important to develop high speed xy-stages. This paper presents a high-speed/short-stroke xy-stage mechanism, which is used on a long-stroke stage and which performs high-speed xy-motions in a short range. To reduce the weight of the moving part, the proposed xy-stage transfers the motion...
High speed thin film transistors (TFTs) are in great need for next-generation TVs which will employ ultra high definition resolution (3840×2160) panels and possibly include multi-view autostereoscopic 3D technology which will negate the use of glasses for 3D viewing mode. In order to achieve high mobility devices, various types of metal oxide semiconductors have been extensively studied, including...
Multi-cores have recently been applied to smartphones, as well as PCs; the performance of electronic devices is improving. However, there is no improvement in performance, if the existing sequential program is executed on multi-core processors. Parallel programming is necessary to use multi-core processors well. Already some companies are doing projects to parallel their own programs that are executed...
This paper presents a stair-climbing wheelchair mechanism and its stair dimension measurement method using distance sensors. The wheelchair climbs stairs using two legs having 7 degrees of freedom. The size of the proposed wheelchair is equal to or smaller than that of other commercially available wheelchairs. The proposed wheelchair can climb steep stairs (more than 30° slope), while the seat trajectory...
New fusion predictors for continuous-time linear systems with different types of observations are proposed. The fusion predictors are formed by summation of the local Kalman filters/predictors with matrix weights depending only on time instants. The relationship between fusion predictors is established. High accuracy and computational efficiency of the fusion predictors are demonstrated on the several...
The demands of delay-sensitive applications are increasing. There are many factors which affect end-to-end delay, but it can be said that the most important factor is not only a network scheduler, but also a delay apportionment policy. In this paper we propose DYNAMIC delay apportionment policy which is allocating delay to nodes proportional to link load status, and simulate it with ADRR scheduler...
Networks tend to deliver delay-sensitive applications demanding deterministic end-to-end delay. A new framework is needed for this purpose as well as increase of network utilization. We propose a framework for absolute end-to-end delay guarantee composed of 3 main components including resource mediator, resource manager and ADRR scheduler. The resource mediator allocate end-to-end delay budget to...
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