Dana Belgium N.v.

Benoit J G Vandevoorde

Keivan Shariatmadar

The invention relates to a method of detecting a change in the direction of rotation of a rotatable shaft () based on non-direction sensitive rotational speed data, the method comprising the steps: &#x25cf;determining a speed () of a rotatable shaft () of a vehicle transmission () based on non-direction sensitive speed data received from a non-direction sensitive rotational speed sensor (), wherein the speed () of the rotatable shaft () is the absolute value of the rotational speed of the rotatable shaft (); &#x25cf;determining, based on the speed () of the rotatable shaft (), if the duration of a first continuous time interval () during which the speed () of the rotatable shaft () is continually smaller than a first predetermined speed value () is shorter than a predetermined duration (); and &#x25cf;detecting that a change in the direction of rotation of the rotatable shaft () has occurred during the first continuous time interval () if the duration of the first continuous time interval () is shorter than the predetermined duration (). The invention further relates to a controller () for carrying out the method and to a driveline () including the controller (). The invention allows to determine a change in direction although the sensor as such is not direction sensitive. This is based on the insight that decelerating to a speed value below a threshold and subsequently accelerating again to a value which is above this threshold corresponds to a change in direction if this process occurs within a short time period.

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Ghent, Belgium

Benoit J G Vandevoorde