AC servo driven cast iron profile horizontal continuous casting machine control system

Abstract

The invention relates to the technical field of horizontal continuous casting machine control, and particularly discloses an AC servo driven cast iron profile horizontal continuous casting machine control system. The AC servo driven cast iron profile horizontal continuous casting machine control system is characterized by comprising a PLC controller and an AC servo system connected with the PLC controller, wherein the AC servo system is connected with an AC servo motor, and the AC servo motor is connected with a speed reducer and a billet drawing roller; the AC servo motor is connected with the PLC controller by means of a photoelectric encoder; and the photoelectric encoder is connected with the AC servo system, and a touch screen is connected to the PLC controller. The AC servo driven cast iron profile horizontal continuous casting machine control system has the advantages that: the 131072 P / r pulse of the servo motor is driven, the positioning precision of the system is high, control over uniform billet drawing step (the length of each billet drawing is consistent) is realized, and the billet drawing quality and the profile forming rate are improved. The control precision errorof the drawing distance and reversing quantity does not exceed 0.1 mm, and the pause time is controlled within 0.1 s.

Description

technical field [0001] The invention relates to the technical field of horizontal continuous casting machine control, in particular to an AC servo-driven horizontal continuous casting machine control system for cast iron profiles. Background technique [0002] The driving system of cast iron horizontal continuous casting and the control accuracy of the drawing parameters are the key factors to ensure the further efficiency of the horizontal cast iron casting operation and the quality of the drawing. , stop time and drawing frequency, etc.) control, these controls require the equipment to be able to accurately perform the pulling action of the process design, and it is easy to adjust the process parameters suitable for the drawing process of each stage during the pulling process, especially the reproducibility of the pulling action. Synchronization of multi-roller servo drives. [0003] At present, the hydraulic servo or DC servo control system is mainly used to realize the ...

AI Technical Summary

Problems solved by technology

[0003] At present, hydraulic servo or DC servo control systems are mainly used to realize the casting control of horizontal continuous casting machines in China. This type of system has low control accuracy (pull and push strokes), which causes each pull and push Inconsistent strokes (uneven steps), affect the quality of the billet, or lead to a decrease in mass density, and may even cause "drawing leakage" accidents

[0004] Therefore, the use of high-torque, high-precision drive systems and optimized control systems is a necessary condition for high-quality casting control. The AC variable frequency servo control system is an ideal equipment for the control of cast iron profile horizontal continuous casting machines, which improves the control accuracy and reliability of the system. , It not only overcomes the shortcomings of poor stability and synchronization of the hydraulic servo control system and is difficult to maintain, but also avoids the shortcomings of the DC servo control system rectifier circuit complex and the mechanical commutator of the DC motor is easy to wear

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