Reduction of Rotational Vibration Using Coriolis Force Generated by Electromagnetic Oscillatory Actuator Moving in Radial Direction

This article presents a new hybrid dynamic vibration absorber (DVA) using the Coriolis effect to reduce a rotational vibration observed in various kinds of rotating machinery. The Coriolis force is generated by a linear oscillatory actuator (LOA), which reciprocates in the radial direction. The effectiveness of the proposed hybrid DVA is confirmed through a MATLAB/Simulink simulation under passive and hybrid operations of the LOA. Moreover, an active torque ripple control is also presented for the purpose of applying this DVA to a switched reluctance motor (SRM). A numerical simulation shows that the proposed hybrid DVA is able to reduce the torque ripple of the SRM by a nonsinusoidal position control of the LOA.