| Citation: | ZHANG Peng, HE Junxu, GAO Xianghong, et al. Vibration control of active dry friction damper-dual rotor system based on rotational speed region on-off control[J]. Journal of Aerospace Power, 2025, 40（5）：20230478 doi: 10.13224/j.cnki.jasp.20230478
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To meet the vibration reduction requirements, an active magnetic dry friction damper (AMDFD) was designed and the friction damping was controlled by active magnetic actuator. The model of the AMDFD-dual rotor system was established, and the effect of the damper with different support positions on the rotor vibration was analyzed. Based on the vibration characteristics of the AMDFD-dual rotor system, a rotational speed region on-off control strategy was designed and its effectiveness was simulated. On the designed test rig, the tests of the dual-rotor system with dampers at each support position under different normal forces were performed. In addition, the vibration suppression tests were carried out when the dual-rotor system accelerated past critical speed. The results showed that AMDFDs near the front/rear bearing of the low-pressure fan/turbine shaft played a dominant role in rotor vibration reduction. The designed controller can substantially suppress the rotor vibration passing the critical speed, up to 89% at maximum.
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