Control requirements : ( 1 ) Tension control of filament: Too fast take-up speed, too much tension, easy to cause wire breakage; take-up speed is too slow, tension is too small, affect production efficiency. The speed regulation accuracy is higher. ( 2 ) System adaptability: A wire drawing machine needs to process 10-70um filaments of different specifications, and different products have different tension control requirements. ( 3 ) The ultra-fine copper wire is expensive, easy to deform and break, and requires high operating reliability of the system. How to measure the speed signal during the automatic operation of the wire drawing machine, how to maintain a constant wire take-up speed, and how to meet the product's speed regulation accuracy requirements are the key to the control of this system. Control method : To realize the speed control of drawing and winding, the speed signal must be measured first. The line speed of the fixed-speed wheel reflects the drawing speed .
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