| 摘要 |
<p>A device for measuring and controlling the stretch ratio of a moving linen comprising a sensor (1) measuring the inlet linear velocity of the linen (2) and a sensor (3) measuring the outlet linear velocity of the linen (2), both of them kinematically interconnected with the moving linen (2), and a divider unit (14) electrically interconnected with both linear velocity sensors (1) and (3). The device comprises as well a unit (4) for computing the stretch ratio of the moving linen (2) which is electrically connected by each of its inputs to the output of the corresponding inlet (1) and outlet (3) velocity sensor, and by its output to the drive (7) of the let-out rollers. </p> |
