Patent ID: 7180258
Filing Date: 2007-02-20
Classification: B60R

Abstract:
1. A method for adjusting a supply current to an electric motor that is situated in a control circuit and produces torque that is transferred to a belt reel of a seat belt retractor of a motor vehicle in dependence on at least one driving situation or a driving condition of the vehicle, comprising the steps of: (a) measuring a motor current of the electric motor during the torque generation; (b) comparing the motor current measured in step (a) as a controlled variable with a command variable that may be adjusted to different intensities as a function of different driving situations or conditions; and (c) adjusting the torque transferred to the belt reel by controlling the supply current for the electric motor situated in the control circuit, wherein the current supplied to the electromotor as a control variable is produced from the comparison between the measured motor current and the command value of the current, in a circuit in which the electromotor is positioned.