| 摘要 |
The invention relates to a method for vibration dampening of a drive train (2), comprising an internal combustion engine which has an engine torque (Mvm) resting against a crankshaft, an electric machine (6), a transmission which has a transmission input shaft and a torque transmission device (4) arranged between the crankshaft and the transmission input shaft, which torque transmission device has at least one flywheel mass (3, 5, 9) capable of oscillating with a moment of inertia (J 1, J2, J3) and a state controller (12) for controlling the electric machine (6) by means of a compensation torque (Mregler) compensating for torsional vibrations on the transmission input shaft. In order to achieve high-quality vibration damping, input variables of the state controller (12) are determined by means of at least one observer (13, 14, 14a, 15) for reconstructed rotational characteristic values of the at least one flywheel mass (3, 5, 9) from detected rotational speeds or angles of rotation of the drive train (2), wherein the reconstructed rotational characteristic values are determined according to the interference variables in the form of a load torque (Mlast) resting on an output (11) of the torque transmission device (4) and of an induced moment (Mind) transmitted via the torque transmission device (4) from the motor moment of the internal combustion engine. |
