伺服电机驱动的结晶器振动集散控制系统

Vibration distributed control system for mold driven by servo motor

伺服电机驱动的连铸结晶器非正弦振动控制相比于目前现场采用的电液伺服驱动控制具有较多优点,但两种驱动方式的控制系统通常采用以高性能控制器作为控制核心的集中控制方式,如果控制器某一部件出现故障,将影响所有连铸流的正常工作,存在一定的安全风险。针对此问题,提出了一种伺服电机驱动的连铸结晶器非正弦振动集散控制系统设计方案,针对多流连铸生产过程进行集散控制系统总体设计及上下位两级计算机控制系统的设计,每一连铸流由一台西门子高性能运动控制器SIMOTION D425单独控制,各流相互独立、互不影响,从而可避免集中控制器某部件故障而影响所有连铸流生产的情况,提高了系统的安全性、可靠性。最后通过试验研究验证了所设计的集散控制系统的可行性。

The non-sinusoidal vibration control of continuous casting mold driven by servo motor has many advantages over the electro-hydraulic servo drive control currently used in the field.But the centralized control mode with high performance controller as the control core is usually adopted in the control system of the two driving modes.In case one part of the controller fails,it will affect the normal operation of all continuous casting flows and there are certain safety risks.To address this problem,a design scheme of non-sinusoidal vibration distributed control system for continuous casting mold driven by servo motor is presented.The general design of distributed control system for multi-strand continuous casting production process is presented,and the upper and lower level computer control system is designed.Each continuous casting strand is controlled by a Siemens high-performance motion controller SIMOTION D425.Each strand is independent and does not affect each other.Thus,the production affect of all continuous casting streams can be avoided even if a part of the centralized controller fails,and the safety and reliability of the system are improved.Finally,the feasibility of the designed distributed control system is verified by experimental research.