G1000-3-2 ピエゾアクチュエータ制御によるエンジンカバー類からの放射音低減手法(機械力学・計測制御部門一般講演(3):機械システムの制御,社会変革を技術で廻す機械工学)
詳細
There are some trade-offs between fuel efficiency and noise in developing vehicle. And we face challenges about a radiation noise from engine, thus there is a growing need for reducing high frequency vibration. The aim of this study was to get the potential of control technique using the piezo actuator to generate high frequency force for reducing radiation noise from some engine cavers. The specific approach taken in this effort was first to make actuator model by changing of coordinate to making one virtual excitation point. And then, we made plant model by a new method that solved a challenge about modal controllability at excitation point. As a result we reduced radiation noise using the piezo actuator.
