Temper mill on-line roll changing cylinder synchronous control system and control method
A technology of synchronous control and leveling machine, applied in mechanical equipment, fluid pressure actuators, servo motors, etc., can solve problems such as poor synchronization accuracy, and achieve the effect of improving system accuracy and performance, high precision, and fast response
Inactive Publication Date: 2012-05-09
BEIJING RES INST OF AUTOMATION FOR MACHINERY IND
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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.
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