利用可控挤压油膜阻尼器轴承(CSFDB)主动控制转子系统振动

Vibration Control of Rotor-Bearing System by Controlled Squeeze-Film Damper Bearings

本文以可控挤压油膜阻尼器轴承(CSFDB)为系统主控元件,运用最优控制理论,设计了柔性转子——支承系统振动的状态反馈控制方案,来主动控制系统稳态不平衡响应和突加不平衡响应。对模型转子仿真结果表明,该闭环控制对转子——支承系统的振动具有显著的抑制作用。因此,CSFDB代替SFDB可望成为航空发动机转子系统振动控制的主要部件。

Previous researches on rotor vibration control[1.2.4]are not convenient for application to aero-engine rotor system. Since squeeze-film damper bearings (SFDB)are widely employed in modern aero-engines, the second author first proposed in 1987 the controlled SFDB of cone journal (CSFDB) and designed an open-loop system by optimizing technique to suppress rotor vibration[3]. Based on Gu's CSFDB model[3], the authors developed a new vibration control scheme for rotor-bearing systems. Compared with that of [3],...