| 摘要 |
In a method for determining a velocity of an object in a printing system, a reference pattern is moved, in particular in a substantial linear movement or in a rotational movement, relative to an fixed reference point independent of the object. A first sensor, configured to have substantially the same velocity as said object with respect to said reference pattern, provides a sensor signal based on the sensed reference pattern. The velocity of the object with respect to said fixed reference point is determined based on the determined velocity of said reference pattern with respect to said fixed reference point, and based on the sensor signal. The movement of the reference pattern enables improved accuracy of the determination of the velocity of the object, in particular for a slow moving object. |
