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

Abstract

The invention discloses a servo motor driven continuous casting crystallizer non-sinusoidal oscillation distributed control system which comprises an upper computer monitoring system and n flows of continuous casting crystallizer non-sinusoidal oscillation control systems; each flow of continuous casting crystallizer non-sinusoidal oscillation control system comprises a motion controller, a servodriver, a servo motor, a speed reducer, a driving mechanism, a continuous casting crystallizer vibrating table, a continuous casting crystallizer, a displacement sensor and the like; each flow of continuous casting crystallizer non-sinusoidal oscillation control system is independently controlled by the corresponding motion controller; the upper computer monitoring system monitors non-sinusoidal oscillation situations of all flows of continuous casting crystallizers; and when one flow of motion controller breaks down, the upper computer monitoring system gives an alarm, while normal working ofthe other continuous casting flows are not affected. Compared with a centralized control system based on a high-performance programmable logic controller, the situation that production of all continuous casting flows is affected due to a programmable logic controller failure can be avoided, the safety and the reliability of the servo motor driven continuous casting crystallizer non-sinusoidal oscillation distributed control system are improved and the servo motor driven continuous casting crystallizer non-sinusoidal oscillation distributed control system has the advantages of low cost, simplicity in structure and the like.

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.

Images