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Constant Voltage Control of Electronic Load Using Robust Digital Controller
Yasuhiko Morishita,Takahide Suzuki,Etsunao Ohtsuji,Yukinari Fukumoto,Kohji Higuchi 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
In this paper, Robust Digital Controller applied to Constant Voltage Control (CV control) of our electronicload which had a very fast response of current. We derived two types of control object. As a result, they showed faster response of current and more stable than existing circuit of CV control. To achieve faster CV control, you will adapt CV control to much further cases of application.
Yamashita, Yasuhiko,Kushima, Soichiro,Okuno, Yuuichirou,Morishita, Taisei Council on Tall Building and Urban Habitat Korea 2018 International journal of high-rise buildings Vol.7 No.3
This paper introduces three distinctive means for the use of a 189-meter high damped structure ensuring safety against earthquake: 1. Realization of L-shaped elevational structural planning: The bottom and top of the tower have belt trusses and hat trusses respectively to restrain the bending deformation. Furthermore, large-capacity oil dampers (damping force 6,000 kN) are installed in the middle part of the tower to restrain the higher-mode deformation. 2. Realization of L-shaped planar structural planning: We devised a means of matching the centers of gravity and rigidity by adjusting planar rigidity. Moreover, viscous damping devices are located at the edges of the L-shaped plan, where torsional deformation tends to be amplified. We call this the "Damping Tail" system. 3. Composite foundation to equalize deformations under different loading conditions: We studied the vertical and horizontal deformations using sway-rocking and 3D FEM models including the ground, and applied multi-stage diameter-enlarged piles to the tower and a mat foundation to the podium to keep the foundations from torsional deformations and ensure structural safety.