ACTIVE DAMPER FOR TORSIONAL VIBRATION AND NOISE MITIGATION IN A DRIVELINE

An active damping system for a driveline includes a prop shaft configured to transmit engine power from an engine to a load, a sealed damper housing, and an active damping fluid contained within the sealed damper housing. A viscosity of the active damping fluid is changeable based on a torsional vibration of the prop shaft. The active damping system further includes a piston fixed to a side of theprop shaft and in communication with the active damping fluid. The piston is configured to rotate about an axis of the prop shaft. The system further includes a viscosity changing unit in communication with the active damping fluid, and a controller operatively connected to the viscosity changing unit. The controller is configured to cause the viscosity changing unit to change a viscosity of theactive damping fluid. The viscosity of the active damping fluid changes the torsional vibration. 种用于传动系的主动阻尼系统，包括：传动轴，其被配置为将发动机动力从发动机传输至负载；密封阻尼器壳体；以及主动阻尼流体，其容纳在密封阻尼器壳体内。基于传动轴的扭振，主动阻尼流体的粘度是可变的。主动阻尼系统进步包括固定至传动轴的侧并且与主动阻尼流体连通的活塞。活