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传送时要通过传送线的速度来适应产品本身的收缩或伸长,并通过多级传送带传送不能检测出松驰或拉长的产品。这样,对传送带相互比例的设定精度就要求很高,即使在温度和时效变化上精度也不稳定,从而会引起产品质量和作业性能的降低。 通过把转数的检测与控制方式从原来的模拟方式变为数字方式,便可解决这些问题。 如框图所示,数字控制通过标准频率的分频进行主速度设定。该分频的设定频率为标准信号。然后,将设定频率和脉冲发生器产生的反馈信号用数字进行比较积
The speed of the transfer line is adapted to the shrinkage or elongation of the product itself and the product can not be detected loose or lengthened by the multi-stage conveyor. In this way, the setting accuracy of the ratio of the belts to each other is high, and the accuracy is not stable even in the case of temperature and aging changes, thereby resulting in a decrease in product quality and workability. By turning the number of detection and control methods from the original analog to digital way, you can solve these problems. As shown in the block diagram, the digital control sets the main speed by dividing the standard frequency. The frequency setting of the standard frequency of the signal. Then, the set frequency and the pulse generator feedback signal generated by digital comparison plot