Research on Unbalanced Vibration Suppression Method for Coupled Cantilever Dual-Rotor System

The cantilever dual-rotor system is a typical structure of the blade output end open rotor engine and coaxial turboshaft engine. excessive unbalanced vibration coupled one main factors limiting application above type. In order to accurately describe coupling effect between dual-rotor-intermediate bearings, response analyzed, self-sensitivity coefficient proposed guide selection measuring points suppression experiments for system. On this basis, new online automatic balance actuator applicable designed, feasibility experiment carried out. experimental results indicate that: (1) can be used as basis actual point arrangement strategy system, step-by-step reduce by more than 80%. (2) designed 53% in 3.52 s. method study provide guidance