| 摘要 |
<p>A method for regulation of the basis weight of paper or board in a paper or board machine in which the machine stock (MT) is composed of a number of component stocks (Mi) and in which the basis weight of the dry paper or board is measured by means of on-line basis-weight measurement at the end of the machine. In the method, first, based on the stock target (Q0) of the machine stock (MT) formed on the basis of basis-weight regulation and based on the predetermined stock proportions (KQi) of the component stocks, a metering target (QiT) is computed for each component stock (Mi). After this, based on the consistency (Csi) of a component stock (Mi) measured from each feed line (23i) of a component stock (Mi) and on the metering target (QiT) computed for each component stock (Mi), a flow target (FiT) is computed for each component stock (Mi). Finally, the flow of each component stock (Mi) is regualted based on the flow target (FiT) computed for each component stock (Mi).</p> |
