초록 ▼

The invention concerns a system for active reduction of rotational nonuniformities of a shaft, especially the drive shaft (10) of an internal combustion engine or a shaft that is coupled or can be coupled to it, with at least one electric machine (4), which is coupled or can be coupled to the shaft,

The invention concerns a system for active reduction of rotational nonuniformities of a shaft, especially the drive shaft (10) of an internal combustion engine or a shaft that is coupled or can be coupled to it, with at least one electric machine (4), which is coupled or can be coupled to the shaft, wherein the electric machine (4) is controlled such that it generates a rapidly varying torque, to reduce the rotational nonuniformities, and it superimposes on this torque a positive or negative torque in order to further achieve a driving action or braking or generator type action. The invention is also oriented to a corresponding method for active reduction of rotational nonuniformities.

대표청구항 ▼

1. A system for active reduction of rotational fluctuations of a shaft comprising an electrical machine (4), with the electrical machine (4) being controlled in such a way thatin order to reduce rotational fluctuations, it produces a rapidly varying torque, wherein, if no mean accelerating or decele

1. A system for active reduction of rotational fluctuations of a shaft comprising an electrical machine (4), with the electrical machine (4) being controlled in such a way thatin order to reduce rotational fluctuations, it produces a rapidly varying torque, wherein, if no mean accelerating or decelerating torque is generated, the rapidly varying torque defines a zero line and has a curved shape, and superimposes a positive or negative torque, respectively, over the rapidly varying torque to additionally generate a mean accelerating or decelerating or rheostatic braking torque, wherein as a result of such superimposition, the rapidly varying torque only shifts with respect to the zero line while maintaining the curved shape; and wherein the rapidly varying torque acts in an alternating manner, i.e. by decelerating in the case of a positive rotational fluctuation of the shaft and by accelerating in the case of a negative rotational fluctuation of the shaft.