Robert Boschgmbh

Maximilian Manderla

Michele Hirsch

Jochen Fassnacht

Sebastian Paulus

Florian Malchow

Wei-Lung Lee

David Gaenzle

Timo Kuehn

Steffen Joos

Thomas Specker

Stefan Gering

Roktim Bruder

Stefan Grodde

Philip Holzwarth

Sven Reimann

The invention relates to a vehicle drive train and to a method for operating a drive train with an electromotive drive (), wherein a rotational speed and a drive torque of the drive (), which are convertible via a toothed transmission stage () for an output (), and the drive () is controlled by means of a control signal (), wherein the control signal () has superimposed thereon a periodic torque change signal (), which is in phase with a tooth stiffness change of the toothed transmission stage (), wherein a signal strength of the torque change signal () is lower with decreasing tooth stiffness than with increasing tooth stiffness.

Method for operating a drive train, and vehicle drive train with electromotive drive

The invention relates to a method () for regulating an electric machine (), comprising a harmonic filter (), said harmonic filter () comprising a second filter () and a filter output transformer (). The method has the steps of: ascertaining () a feedback variable (Idq); determining () a filter specification variable (FV); filtering () the filter specification variable (FV); ascertaining () a filtered feedback variable without harmonic components (IdqFunda); and energizing () at least one winding of the electric machine () on the basis of the filtered feedback variable without harmonic components (IdqFunda).

Method and device for regulating an electric machine

A method for controlling an automated or autonomous locomotive device, including automatically ascertaining a deviation from a predefined trajectory, the deviation requiring a return of the locomotive device to the predefined trajectory; automatically calculating a jerk as an input variable, as a function of the deviation from the predefined trajectory; automatically calculating an unconstrained correcting variable for the return to the predefined trajectory, as a function of a weighted sum that includes a weighted summand of the input variable and a weighted summand of the state for the return path; automatically calculating a constrained correcting variable regarding the jerk; the unconstrained correcting variable being manipulated via a cascade that includes multiple stages having one saturation function per stage; integrating the constrained correcting variable, to obtain a constrained return trajectory to the predefined trajectory; automatically steering the locomotive device to the predefined trajectory by way of the constrained return trajectory.

Method for controlling an automated or autonomous locomotive device, and evaluation unit

The present invention discloses a control system for an electric machine. In order to control the electric machine, predetermined frequency components are extracted from manipulated variables or measurement variables of the electric machine and are multiplied by a previously calculated control matrix. The control matrix can be calculated in advance here. Different control matrices can be formed in advance for different applications. As a result, simple efficient and robust control of the electric machine is possible, in particular for optimising and minimising harmonics.

Method for controlling an electric machine, control device for an electric machine and electric drive system

Growing community of inventors

Ludwigsburg, Germany

Maximilian Manderla