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

频率自适应变刚度扭转吸振器的半主动控制研究是实现动力传动系统扭转减振的关键。针对某履带车辆动力传动系统，建立含变刚度扭转减振器的系统动力学模型，基于系统模型提出瞬态查表和稳态寻优结合的控制策略，有效地消除系统外部激励主导频率识别偏差，使变刚度扭转吸振器能够快速跟随外部激励主频，实现扭转吸振器的半主动控制。仿真和试验的研究结果表明，所提综合控制方案能有效提升减振性能10%。

Vibration Reduction Control of Variable Stiffness Torsional Vibration Absorber Based on Real Vehicle Transmission SystemDynamic Characteristics

The semi-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-up table and steady-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-active control of the vibration absorber. The simulation and experimental results indicate that the proposed integrated control scheme can improve damping performance by 10%.