抄録
This paper describes a prototype model of active control system for reducing transmitted noise, which is caused by floor impulse and perceived at the downstairs room. The active control system actuated by bi-morph piezo-electric elements are installed in the intermediate space between the upstairs floor and the downstairs ceiling. The bi-morph piezo-electric elements are reinforced for improving bending strength by polyethylene plate with low bending stiffness. H-infinity robust feed-back control system is designed assuming application of four actuators and four sensors to eliminate the sensor signal. Control experiment is conducted to prove the effectiveness of the control system.
