基于实车传动系统动力学特性的变刚度扭转吸振器减振控制

The semi鄄control of the frequency adaptive magnetorheological elastomer (MRE) torsional vibration absorber is a key step to reduce torsional vibration in the powertrain system. In this paper, aiming at the powertrain system of a tracked vehicle, a dynamic system model with a MRE variable stiffness torsional vibration absorber is established. Based on the model, a control strategy combining transient look鄄up table and steady鄄state optimization is proposed to significantly reduce the deviation of the identified external excitation dominant frequency, allowing the absorber to be capable of quickly following the dominant external excitation frequency, thereby achieving semi鄄active control of the vibration absorber. The simulation and experimental results indicate that the proposed integrated control scheme can improve damping performance by 10% .