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• W2581102046 abstract "We have reported an active seismic response control system by making use of an energy conversion in damping devices. This system changes the vibrational energy of the structure by large earthquake with a damper, and accumulates it. Then, it reuses this energy, and drives an actuator as vibration control device. This study suggests an active absolute seismic response control by utilizing energy conversions in dampers, and reports the analysis of proposed system characteristics for the base isolation structures. (1)From the seismically response analysis results, we can reduce the maximum acceleration response within 3-25cm/s2 for the proposed system, showing the drastic response reduction effect compared with the common base isolation system. (2)An added energy (E) becomes large and an absorbed E becomes small in the energy of the actuators in accordance with the increase of the damping factor for passive dampers, depending on earthquake characteristics. The amount of energies becomes small in accordance with the period of base isolation structures. (3)The input and output of energy balance (Passive E exceeds added E.) is ineffective for earthquakes with large displacements compared with velocities. In addition, the energy conversion of passive dampers is created by adding powers of actuators. (4)Through the feature of the active absolute seismic response control, we show that the various energy can be evaluated using the structural characteristics of base isolations and earthquake’s characteristics without seismic response analyses. (5)For the setting conditions, we assume the input and output energy balance is formed by decreasing the displacement gain Gd, and the acceleration response of the base isolation story can be reduced to 1/5 of common base isolation structures. This setting condition tends to be formed in accordance with the increase of the damping factor and the period of base isolation structures. (6)Proposed system, i.e. the absolute response control forming the input and output of energy balance, can reduce the control force and the acceleration response of the base isolation story compared to the absolute velocity feedback control. We have presented the realization possibility of the seismic response control system showing the drastic response reduction effect without the energy supply, being equivalent to the active absolute seismic response control, through the characteristics analyses of the active absolute seismic response control by utilizing energy conversions in dampers." @default.
• W2581102046 created "2017-02-03" @default.
• W2581102046 creator A5012818787 @default.
• W2581102046 date "2017-01-01" @default.
• W2581102046 modified "2023-09-26" @default.
• W2581102046 title "CHARACTERISTICS ANALYSIS OF ACTIVE ABSOLUTE SEISMIC RESPONSE CONTROL BY UTILIZING ENERGY CONVERSION IN DAMPERS" @default.
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• W2581102046 doi "https://doi.org/10.3130/aijs.82.63" @default.
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