| 摘要 |
<p>Method and system in connection with a motor operated tension measuring roll (1) for compensating an error in tension measuring of a continuous material web, the method comprising defining the tension T meas of a material web (4) by a force sensor (3) provided at the tension measuring roll. The method comprises defining the frictional couple T µ and moment of inertia J of the tension measuring roll before tension measuring during operation, defining a torque T mot generated by the driving motor of the tension measuring roll during operation, defining a torque T wm directed to the material web by the tension measuring roll by subtracting the frictional couple T µ and moment of inertia J from the defined torque T mot generated by the driving motor, defining a force F T directed to the material web on the basis of the torque T wm directed to the material web by the tension measuring roll, defining, on the basis of the force F T directed to the material web, a component of force F Tm of the measuring sensor in the measuring direction directed to the material web by the tension measuring roll, and subtracting from the tension T meas defined by the force sensor the component of force F Tm of the measuring sensor in the measuring direction directed to the material web by the tension measuring roll to provide a corrected measuring signal.</p> |
