| 摘要 |
A method includes moving (404) a first sensor assembly (108, 110) to a plurality of cross direction positions (500, 600) relative to a second sensor assembly (110, 108), where the first and second sensor assemblies are configured to move in the cross direction relative to a web (102) of material. The method also includes, for each of the plurality of cross direction positions, determining (406) a sensor value associated with a sensor source (212a, 212b) disposed at the second sensor assembly as measured by a sensor receiver (212b, 212a) disposed at the first sensor assembly. The method further includes determining (410) a starting alignment position (500a, 600a) of the first sensor assembly to be a first cross direction position where a difference between the sensor value at the first cross direction position and a corresponding sensor value at one or more adjacent cross direction positions is a minimum. |
