Coiling tension control method and device for amorphous strip

Abstract

The invention discloses a coiling tension control method and device for an amorphous strip. The method comprises the steps as follows: when the set time interval is reached, the current rotating speed n0 of a cooling roller and the current rotating speed n1 of a coiling roller are determined; the current torque Me of the coiling roller is determined according to the diameter D0, which is obtained in advance, of the cooling roller, the current rotating speed n0 and the current rotating speed n1; the current torque Me of the coiling roller is compared with the set torque of the coiling roller; and the rotating speed n1 of the coiling roller is adjusted according to the comparison result of the current torque Me with the set torque. With the method, the torque Me of the coiling roller is close to the set torque by adjusting the rotating speed n1 of the coiling roller, then the tension of the amorphous strip is constant, the problem of the tension fluctuation in the coiling process of the amorphous strip is effectively solved, constant tension control in the coiling process is realized, and thus the coiled strip coil is tight and neat.

Description

technical field [0001] The invention relates to the field of coiling control of an amorphous strip, in particular to a method and device for controlling the coiling tension of an amorphous strip. Background technique [0002] With the development of electronic technology in the direction of high frequency and miniaturization, amorphous ultramicrocrystalline soft magnetic alloy materials have been made into various magnetic devices to replace silicon steel, ferrite and permalloy and other materials, and are used in the power industry, Electronics industry and power electronics technology field. [0003] In the production process of amorphous thin strip, it is mainly composed of chartered vehicles, copper rod repairing, grabbing and winding, temperature control, pressure control and other links. The molten amorphous stock solution is processed to form a thin strip. After passing around the cooling roller, the strip passes around the pressure roller and two supporting rollers,...

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Problems solved by technology

[0005] However, conventional PID control has been widely used in industrial process control due to its simple principle, convenient use, good applicability, and strong robustness. However, PID control needs to establish an accurate mathematical model of the controlled object, which can only Dealing with Linear Control Systems

The coiling process of amorphous strip is a very complex process with nonlinear, time-varying, and hysteresis characteristics. The conventional PID control mode is difficult to meet the constant tension control of the coiling process, which will affect the quality of the strip coil.

[0006] In addition, the variable tension torque control mode requires that the line speed remains unchanged during the coiling process, and the radius of the coiling roll is also continuously increasing due to the continuous increase in the volume of the coiled material during the coiling process. If the coiling motor If the speed remains constant, the line speed will gradually increase, so it is difficult to achieve constant tension control in the coiling process

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