Turntable type high-speed reeling machine control method and system of cold continuous rolling production line

Abstract

The invention provides a turntable type high-speed reeling machine control method of a cold continuous rolling production line. The method comprises the following steps of: (1) obtaining an actual reeling diameter of a finished steel roll by calculating and correcting; (2) obtaining a precision rotation inert of a reeling machine by measuring and calculating; (3) converting a tension set value into a torque set value according to the actual reeling diameter and the rotation inert and then controlling an output torque of a motor to realize tension control; and (4) switching and controlling positions of two reeling machines, and realizing high-precision control of the cold continuous rolling production line turntable type high-speed reeling machine. The invention also provides a cold continuous rolling production line turntable type high-speed reeling machine control system. The system comprises an actual reeling diameter obtaining module, a rotation inert obtaining module, a band steel tension control module and a double-reeling-machine position switching control module. The invention has the beneficial effects that during high-speed production, the turntable reeling machine is precisely controlled; the actual reeling diameter is accurately calculated; band steel tension can be stably controlled; the fault rate is low; and the production rate is improved.

Description

technical field [0001] The invention relates to the field of electrical control, in particular to a control method and system for a turntable high-speed coiler of a cold continuous rolling production line. Background technique [0002] The rotary coiler, also known as the carrousel coiler, is one of the core equipment in the cold rolling production line, and its coiling quality directly affects the quality of the finished steel coil. In the general strip steel processing line, the double-channel double-coiler arrangement is usually adopted, which occupies a large area and has a high failure rate of strip threading, which is suitable for lower-speed production lines. For the production line with fast speed and thin steel strip, the rotary double coiler system is usually used, which has the characteristics of small footprint, low failure rate of strip threading, high control precision, and fast production speed. In the high-speed continuous cold rolling production line, it is ...

AI Technical Summary

Problems solved by technology

However, there are certain difficulties in the control technology of the rotary high-speed coiler in the cold rolling production line. It is difficult to accurately control the coil diameter calculation during high-speed production, resulting in unstable strip tension control.

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