調和振動子熱浴ノイズでモデル化されたプラッタ回転励振を受けるHDD筐体の動吸振器の基礎検討

抄録

HDD vibration problem is important for equipment quietness, failure prevention, heat trouble, and so on. Owing to the vibration suppression, the dynamic absorber was well used technology. In this paper, the dynamic absorber for HDD housing vibration was proposed based on the model of harmonic oscillator heat bath. At first, the design problem of dynamic absorber was defined for harmonic oscillator heat bath noise. Furthermore, the numerical calculation was conducted. As the result, to exist of dynamic absorber was revealed because of mean square value of main system in case of with dynamic absorber was decreased than the case of no absorber. Moreover, the minimum mean square value was dramatically changed by mass ratio. Especially, the minimum mean square value was depended on the ratio of angular frequency between dynamic absorber and harmonic oscillator heat bath. Finally, the consideration of operational principle of proposed dynamic absorber was conducted.