leveling unit based on pressure control model

 

 

YANG Li hua

 

(Department of mechanical engineering, Sichuan Electromechanical Institute of 

Vocation and Technology, Panzhihua 617000, China)

 

 

Abstract: In view of the problem of horizontal and wave shape defects of hot rolled strip after formation. The control principle of the hydraulic pressure system of the hydraulic press was studied, The main function of the control system and the control method was analyzed, The key factor in the quality of the plate was found. The method of automation of hydraulic control system of leveling unit was proposed, The original relay control mode was transformed into SIEMENS PLC operation control mode, The modeling method based on the pressure control model was analyzed, The functions of five aspects, such as the pressure control system of the hydraulic control system, the control of the hydraulic bending roll, the constant pressure control, the following control and the zero control were introduced. PLC logic control was designed, which used to rely on simple charts and field operation personnel to set up the method to set the parameters of the rolling set of the backward means of the design has been changed. The results indicate that the control system reform and improve the system control precision, improve the plate shape and surface quality of the strip, to temper mill hydraulic control system automation.

 

Key words: control model; smooth; sub volume unit; hydraulic pressure system