Method and device for ascertaining a rotational speed parameter for determining a setpoint torque

A device having means for ascertaining a rotational speed parameter for determining a setpoint torque for driving a drivetrain,

• wherein the drivetrain comprises a first and at least one second drive assembly for driving a hybrid vehicle,
• wherein the first drive assembly can be coupled to the drivetrain by means of a clutch and the second drive assembly is mechanically coupled to the drivetrain,
• wherein, when the hybrid vehicle is being driven by means of at least the first drive assembly, the rotational speed parameter corresponds to the value of a shaft rotational speed, wherein,
• when the hybrid vehicle is being driven only by means of the second drive assembly, the rotational speed parameter corresponds to the value of a determined rotational speed.

A drivetrain comprising:

• a first and at least one second drive assembly for driving a hybrid vehicle, wherein the first drive assembly can be coupled to the drivetrain by means of a clutch and the second drive assembly is mechanically coupled to the drivetrain,
• means for ascertaining a rotational speed parameter for determining a setpoint torque for driving the drivetrain,
• wherein, when the hybrid vehicle is being driven by means of at least the first drive assembly, the rotational speed parameter corresponds to the value of a shaft rotational speed,
• wherein,
• when the hybrid vehicle is being driven only by means of the second drive assembly, the rotational speed parameter corresponds to the value of a determined rotational speed.