タケダ　マサカズ   Masakazu Takeda   武田　真和    所属   追手門学院大学  理工学部 機械工学科    職種   講師
発表年月日	2021/09
発表テーマ	浮上式システムの動的安定性と最適化設計に関する研究
会議名	年次大会
主催者	一般社団法人 日本機械学会
発表形式	その他
開催期間	2021～2021
発表者・共同発表者	須田 貴大,武田 真和,菅原 佳城
概要	In recent years, air floating systems are used in factories. However, a self-excited vibration occurs when supply flow rate or mass are increased. The self-excited vibration cause declining safety and performance. Therefore, confirming occurrence condition of the self-excited vibration is important. This paper presents analysis of the self-excited vibration of an air floating system. Instability conditions are examined considering translational and rotational vibration. Equation of motion and flow equation are separated into steady equation and nonsteady equation by method of perturbation. The nonsteady equation are Laplace transformed and system’s characteristic equation is obtained by substituting steady terms for the nonsteady equation. We used Routh-Hurwitz stability criterion and confirmed occurrence condition of the selfexcited vibration of an air floating system.