Tension control. One of the real tension device The principle tension is controlled tension winding control inverter Abstract: This article mainly introduces the principle of frequency conversion control tension control winding, this technique can make the whole process in textile occupation in volume was stable, avoid small winding tension is too large; large initiated pine yarn appearance. Keywords: frequency winding tension control vector loop coil diameter calculation tension device tensioner tension device Objective: tension device. With the constant tension control of inverter do essence is closed loop vector control, namely plus encoder reaction. The winding, rewinding roll by is from small to big change, in order to ensure the constant tension, so the need for motor output torque from small to big change. At the same time in different operating process, to make the appropriate torque compensation. Small volume initiated at the moment, acceleration, deceleration, parking, large when launched, to be not the same torque compensation in different volume of Scripture, allowing a full process volume was stable, avoid small winding tension is too large; large initiated pine yarn appearance. Two. Tension control conversion rolling in the use and occupation of the need for textile technology The drawbacks of the 2.1 traditional rewinding device Textile machinery such as: sizing machine, sizing dyeing machine, and the shaft machines will have coiling link. Traditional winding is by mechanical transmission, since the coaxial transmission machinery wear on the machine is very serious, it is understood, the average life expectancy for mechanical coaxial transmission part is basically a year or so. And often to protect, protection time is also very troublesome, not only waste manpower and protection of high costs, brought a lot of inconvenience to the customer. Especially in the textile equipment basically is after the boot does not allow midway parking, such as seizure accident situation need parking will cause great waste. In this case, tension control conversion rolling began to gradually replace the traditional mechanical transmission system. Tension device tensioner tension device Need 2.2 tension control conversion rolling technology (1) in all the process of winding are insist stable tension. Tension unit for: Newton or kilograms force. (2) in the launching of small volume, not due to excessive tension and yarn breaking; large initiated not pine yarn. (3) in the acceleration and deceleration, the continuous state and cannot have the situation. (4) need to be tension quantization, which can set the size of the tension (a unit of force), can display the size of the practice of the roll diameter. The 2.3 tension control conversion rolling strengths tension device tensioner tension device (1) the tension setting in the man-machine, humanized operation, the unit force unit: Newton. (2) the use of advanced control algorithm of recursive operation: roll diameter; hollow coil diameter activated linear additive tension using tension taper; calculation formula; torque compensation of dynamic adjustment etc.. (3) volumes of real-time accounting size, accuracy is very high, ensure the smooth function of volume output torque of the motor is good. And in the accounting of roll diameter when added to the roll recursion operation size, in the time of operation errors, to correct himself roll diameter to the accurate numerical. (4) due to inertia reel device is large, the roll diameter changes from small to large. If the operator of acceleration and deceleration, parking, and then activated very simple cause detonation yarn and pine yarn appearance, will be a direct result of yarn quality. And for the transformation of rolling frequency, all the above cases, coiling are very stable, tension is always safe. And through the PLC disposal, in the dynamic process specific, adding some dynamic adjustment measures, which makes the winding function better. Tension device tensioner tension device (5) transformed into frequency rolling on volume basis in the traditional mechanical transmission, is very simple and cost is low, basically do not need to transform the original machinery. The transformation period of small, basically two or three days will be able to debug the end device. (6) over the mechanical rolling defects of mechanical wear, extending the service life of machinery. When protection equipment. Block diagram and system structure diagram of 1 system Three. The control principle and debugging process variable winding The 3.1 coil diameter calculation principle According to the V1=V2 accounting rewinding roll diameter. Because V1= Omega 1*R1, V2= 2*Rx. Because at the same time by the length measuring roll through the yarn length and winding received yarn length is flat. L1/ Delta t=L2/ delta T, Delta n1*C1=, Delta n2*C2/i (delta n1--- unit time traction motor operation cycles, Delta n2--- units of time rolling motor operation circle number, C1--- length measuring roll circumference, C2--- winding pan head circumference, i--- reduction ratio) Delta n1* Delta n2* Pi Pi *D1= *D2/i D2= Delta n1*D1*i/ delta N2, Delta n2=, Delta P2/P2 because (delta P2--- take-up pulse number, P2--- rolling encoder encoder attack roll number). Delta n1= Delta P1/P1 Delta n1=1, namely the length measuring roll round, Holzer attack by a signal is connected to the PLC switch. Then the D2=D1*i*P2/ Delta P2, so that the winding disk head coil diameter is obtained. The analysis of the dynamic process of 3.2 winding To ensure the smooth of the coiling process, whether it is big, small volume, acceleration and deceleration, activation, parking can ensure the stable tension. The need for torque compensation. The whole system to activate, first of all to overcome the static friction torque of the attack, the static friction torque for short, torque plays a role only in the activation of all of a sudden the static friction; the work to overcome the sliding friction force attack sliding friction torque, sliding friction torque has always existed in the operation, and the