CAJ | 학술논문

针对钢包底吹氩控制系统智能化程度不高的现状,提出一种基于模糊控制理论与传统PID控制器相结合、采用可编程逻辑控制器（PLC）的控制方案。通过检测吹入氩气的压力、流量数值,反馈给控制系统,与预设值比较得出偏差值,在程序中依据偏差值采用模糊推理规则修正PID参数,由修正后的控制参数控制PCM调流器,对流量进行在线调整,以达到对底吹氩气流量实时精确控制。系统程序可随不同工况条件有针对性地选择控制策略和控制算法,实际应用显示,该套控制系统能够在较大的工况变化范围内满足炼钢吹氩的工艺要求。
침대강포저취아공제계통지능화정도불고적현상,제출일충기우모호공제이론여전통PID공제기상결합、채용가편정라집공제기（PLC）적공제방안。통과검측취입아기적압력、류량수치,반궤급공제계통,여예설치비교득출편차치,재정서중의거편차치채용모호추리규칙수정PID삼수,유수정후적공제삼수공제PCM조류기,대류량진행재선조정,이체도대저취아기류량실시정학공제。계통정서가수불동공황조건유침대성지선택공제책략화공제산법,실제응용현시,해투공제계통능구재교대적공황변화범위내만족련강취아적공예요구。
In order to enhance the automatic level of ladle bottom blowing argon process,a novel scheme is put forward which combines fuzzy control theory and traditional PID controller together.It uses PLC as controller and pressure,flow of blowing argon are detected to calculate control deviation.Fuzzy reasoning engine is employed to adjust PID parameters according to the control deviation and then to drive PCM device,so that the argon flow can be controlled accurately on-line.Furthermore,the scheme is able to change control strategies to adapt variant working conditions,which provides much more flexibility.The scheme has been applied in several steel factories successfully and proved meeting blowing argon technique in great range.