Servo motor driven continuous casting crystallizer non-sinusoidal oscillation distributed control system

Abstract

The invention discloses a non-sinusoidal vibration control system of a continuous casting mold driven by a servo motor, comprising a host computer monitoring system, a non-sinusoidal vibration control system of an n-stream continuous casting mold, and a non-sinusoidal vibration control system of a continuous casting mold for each stream Including motion controller, servo drive, servo motor, reducer, drive mechanism and continuous casting mold vibration table, continuous casting mold, displacement sensor, etc. The non-sinusoidal vibration of each continuous casting mold is independently controlled by a motion controller. The host computer monitoring system monitors the non-sinusoidal vibration of all continuous casting molds in real time. When the first-class motion controller fails, the monitoring system sends out an alarm. But it does not affect the normal operation of other continuous casting streams. Compared with a centralized control system based on a high-performance programmable controller, the present invention can avoid the situation that all continuous casting strands are affected due to the fault of the programmable controller, improves the safety and reliability of the system, and has the advantages of low cost, Advantages such as simplified structure.

Description

technical field [0001] The invention belongs to the field of continuous casting, and in particular relates to a non-sinusoidal vibration collecting and distributing control system of a continuous casting crystallizer driven by a servo motor. Background technique [0002] The non-sinusoidal vibration of the continuous casting mold has obvious effects on increasing the casting speed and improving the quality of the casting slab. It has been recognized by continuous casting workers at home and abroad as one of the key technologies for the development of high-efficiency continuous casting. [0003] At present, non-sinusoidal vibration devices for continuous casting molds used in industry are mainly divided into three types: hydraulic drive, mechanical drive, servo electric cylinder drive, and a more advanced servo motor drive. The electro-hydraulic servo drive method is mainly used at home and abroad, but there are disadvantages such as oil leakage of the servo cylinder and zero...

AI Technical Summary

Problems solved by technology

[0005] However, the existing non-sinusoidal vibration control system for continuous casting molds driven by servo motors is usually a centralized control system, which uses a high-performance, relatively expensive programmable controller as the control core to control multi-strand continuous casting molds. Realize non-sinusoidal vibration. If a module in the high-performance programmable controller fails, all continuous casting streams will stop working. Therefore, the entire centralized control system has certain safety risks

For example: In 2016, "Metallurgical Automation" magazine, Volume 40, Issue 6, P12-18, published the article "Continuous Casting Mold Non-sinusoidal Vibration Control System Driven by Servo Motor", which disclosed a high-performance PLC+FM458 control system through control 8 S120s, and then control 8 servo motors to drive the 8-strand continuous casting mold to achieve non-sinusoidal vibration. Once a module in the PLC+FM458 control system fails, it will affect the continuous casting production of all streams; and, the control of this system Part includes PLC+FM458 and servo controller CU320 in drive control S120, among which S7-400PLC+FM458 is more expensive

Therefore, although this centralized control system has the advantages of high control precision, fast response speed and good stability, it has certain security risks, high cost and complex structure.

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