Temper mill on-line roll changing cylinder synchronous control system and control method

Abstract

The invention discloses a temper mill on-line roll changing cylinder synchronous control system and a control method. The system comprises a plurality of hydraulic cylinder position detection modules, an A / D (Analog / Digital) input module, a PLC (Programmable Logical Controller) controller, a D / A (Digital / Analog) output module, an amplifier and a plurality of control valves, wherein the plurality of hydraulic cylinder position detection modules are correspondingly arranged on a plurality of hydraulic cylinders respectively; the A / D input module is connected with the plurality of hydraulic cylinder position detection modules respectively; the PLC controller is connected with the A / D input module; the D / A output module is connected with the PLC controller; the amplifier is connected with the D / A output module for receiving an amplitude limiting output value transmitted from the D / A output module and amplifying the amplitude limiting output value; the plurality of control valves are correspondingly connected with the plurality of hydraulic cylinders respectively; the plurality of control valves are also connected with the amplifier respectively; and each control valve is used for adjusting the movement of a valve core of the control valve according to the amplified amplitude limiting output valve, so that lifting speed and position tracking of the hydraulic cylinder connected with the control valve are controlled. Through the system and the method, on-line roll changing cylinder can be precisely synchronous.

Description

technical field [0001] The invention relates to a synchronous operation control system and a control method, in particular to a synchronous control system and a control method of an online roll changing cylinder of a skin pass mill. Background technique [0002] The main function of the tempering machine is to improve the shape of the steel plate and eliminate the local thickness tolerance, so that the steel plate has a good shape and better surface quality. [0003] The structure of the existing tempering machine is as follows figure 1 As shown, it includes a leveling frame 1, a work roll changing device 2, a backup roll changing device 3 and a main transmission device 4, wherein the working roll changing device 2 includes a working roll storage rack 21, a roll changing track 22, a roll changing The trolley 23 and the roll changing trolley track 24, when changing rolls, the roll changing track 22 is aligned with the roll changing trolley track 24, and the multiple roll cha...

AI Technical Summary

Problems solved by technology

[0005] A technical problem to be solved by the present invention is to provide a control system capable of accurately synchronizing the online roll changing cylinders in view of the poor synchronization accuracy of the online roll changing cylinders of the existing skin pass mill

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