2 July 2001 Active vibration control of rotor system by a magnetorheological fluid damper
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A disk-type MR fluid damper based on shear mode has been developed and the experimental results show that the dynamic characteristics of a disk-type MR fluid damper can be controlled by the application of an external magnetic field with a low voltage. In this paper, the effectiveness of on-off control based on feedback of rotational speed, proportional (P) control and proportional-integral (PI) control, both based on feedback of disk vibration eccentricity, on controlling the rotor vibration are experimentally studied. It is shown that the simple on-off control was the most effective method in attaining the required objective, but as expected requires pre-knowledge of the switching speeds and there is a transient response with large amplitude at switching speeds. P and PI control can control the rotor vibrations, but both exhibit significant chattering which can adversely affect the control performance and still require to properly choose the controller parameters.
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Changsheng Zhu, Changsheng Zhu, Jiandong Jiang, Jiandong Jiang, David A. Robb, David A. Robb, David J. Ewins, David J. Ewins, "Active vibration control of rotor system by a magnetorheological fluid damper", Proc. SPIE 4331, Smart Structures and Materials 2001: Damping and Isolation, (2 July 2001); doi: 10.1117/12.432696; https://doi.org/10.1117/12.432696

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