Abstract

This report introduces the active mass driver (AMD) system, which is one of the active structural response control systems. The AMD system, in brief, aims to suppress building vibrations caused by earthquakes and/or strong winds by installing an auxiliary mass in the building and controlling it by operating an actuator. In succession, our studies were promoted for its practical use, and in August 1989, this AMD system was installed and put into operation in a building built in Tokyo. The practical application of the active structural response control system is the first of its kind in the world. Two and a half years have passed since its completion, and results from the observations of many earthquakes and strong winds have been amassed, verifying the vibration reducing effect.

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