材料放卷，成型过程的输送采用无级调整控制。材料张力稳定、产品成型工整。
Rewinding and molding of products are of step-less speed controller with stable tension and trim molding.
给棉罗拉采用调频电机传动，实现无级变速，通过计算机控制与道夫传动同步。
Feed roller is driven by an electronic frequency converter which permits stepless variation of its speed and is controled to be synchronized with doffer by the computer.
速比调节规律是无级变速器控制的主要依据之一，是发挥无级变速器优越传动性能的基础。
Transmission ratio regulation law is one of the basis of continously variable transmission(CVT) control. Based on this, CVT may exert its eminent performance.
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