Vibration Control of Tunneling Equipment Based on Magnetorheological Elastomeric Dynamic Vibration Absorber

In order to reduce the vibration of the cutting part of the continuous miner, firstly, a coupled dynamics model of cutting part with magnetorheological elastomer dynamic vibration absorber (MREDVA) is established, and the vibration reduction mechanism of MREDVA is analyzed; secondly, an MREDVA structure applicable to the tunneling equipment is designed, and its frequency-shifting characteristics are obtained through simulation; Thirdly, for different coal seam characteristics, the amplitude attenuation is used as an index to compare the vibration reduction performance of MREDVA under different current strengths; finally, the semi-active control algorithm is established based on the vibration reduction results under different current strengths. The results show that the control effect of the semi-active MREDVA is significantly better than that of the passive MREDVA, and the amplitude attenuation can be improved to 45.1% under complex working conditions.