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Rolling mill micro tension control principle
Micro tension is through the motor on the adjacent two frame in the upper frame work torque detection, memory storage, forming a representation of the actual tension size of billet values in a given set of values and tension deviation, by proportional integral control correction upstream frame speed, coordinate the relationship between the two frame, micro tension control. The key is to control the rolling moment of accurate measurement of the rolling machine. Thecorresponding frame detection system through the armature torque indirectly from the value. When the frame of the steel rolling machine bite has not yet entered the next frame rolling mill, torque system to calculate the value of the rolling force of the rolling mill is the distance value. The rolling mill also bite steel, re calculated new torque, torque difference is two on rolling tension torque. If the deviation is positive, said frame pile of steel; if the deviation value is negative, said frame drawing steel. The system is according to the deviation of the sign and size, the corresponding velocity correction to balance the mill speed, ensure the strip tension between stands is limited within a certain range, micro tension control.
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