AUTHOR=He Wei , Ouyang Qing , Hu Hongsheng , Ye Xudan , Lin Lizhong 

TITLE=Semi-active control of crankshaft skyhook based on magnetorheological torsional damper

JOURNAL=Frontiers in Materials

VOLUME=Volume 9 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2022.933076

DOI=10.3389/fmats.2022.933076

ISSN=2296-8016

ABSTRACT=The current widely used rubber or silicone oil torsional vibration damper for controlling crankshaft torsional vibration is a passive damper with non-adjustable damping parameters, which cannot effectively control torsional vibration at different harmonic resonances. Based on the controlled rheological properties of magnetorheological (MR) smart materials, this paper designed a new type variable damping MR torsional damper (MRTD) and proposed a semi-active control method to effectively control the torsional vibration of the crankshaft under multiple harmonic resonances. Firstly, a mechanical model of the MRTD and a lumped parametric mass model of the crankshaft system were developed, and the resonance frequency harmonic range of the crankshaft system operation was determined by the torsional vibration characteristics analysis. Then a semi-active skyhook control method for the MRTD was proposed, and a joint control simulation analysis was performed using Amesim and Matlab software. The torsional vibration control effects of crankshaft system with no damper, MRTD with different damping coefficients and MRTD with skyhook control under acceleration and uniform speed conditions were comprehensively investigated. The simulation results indicate that the skyhook damping control has significantly reduced the torsional vibration amplitude under both acceleration and uniform speed conditions, verifying the effectiveness of the skyhook-based control strategy for MRTD.