Component part, device and method for determining an axial position of a component part and for determining a rotary speed of the component part

A transmission device, comprising:

• a component that is rotatable relative to a central axis and is adjustable in an axial direction, the component further comprising:
• a contour defined in a circumference of the component so as to rotate with the component;
• the contour comprising a plurality of first areas used by a sensor device to calculate a position of the component in the axial direction, each of the first areas comprising a first surface that varies in a radial dimension relative to the central axis along the axial direction;
• the contour further comprising a plurality of second areas used by the sensor device to calculate a rotational speed of the component, each of the second areas comprising a second surface with a slope in the axial direction that is differentiated by the sensor device from a slope of the first surface in the first areas;
• and the first areas and second areas alternating around the circumference of the component;
• the sensor device spaced radially adjacent the contour, the sensor device interacting with the contour to determine a gap distance from the sensor device to surfaces of the first areas and second areas, wherein one or both of an axial position of the component or rotational speed of the component is calculated based on the gap distances;
• the sensor device comprising at least one sensor unit with two measuring devices spaced apart in the direction of axial movement of the component and oriented relative to the first and second areas such that the measuring devices simultaneously determine the gap distance at axially spaced locations within a single one of the first areas that is opposite to the sensor device and sequentially determine the gap distance to a single one of the second areas that is opposite to the sensor device as the component rotates.

A method for calculating the axial position and rotational speed of a component in a transmission, wherein the component is rotatable and axially shiftable between operating positions, comprising:

• generating a first sensor signal by interaction of a sensor device with first areas of an encoder contour provided around a circumference of the component the first areas varying in a radial dimension relative to a central axis of the component along the axial direction;
• transforming the first sensor signal with a filter into a first signal;
• using the first signal to calculate the axial position of the component;
• generating a second sensor signal by interaction of the sensor device with second areas of the encoder contour, the second areas having a constant radial dimension relative to the central axis of the component;
• transforming the second sensor signal with a filter into a second signal;
• using the second signal to calculate rotational speed of the component;
• wherein the sensor device has a sensor unit with to measuring device spaced apart in the direction of axial movement of the component the first sensor signal generated as a function of a difference in signals from the two measuring devices for the first areas of the contour, and the second sensor signal generated as a function of an average of the signals from the two measuring devices for the second areas of the contour.