循环流化床锅炉自整定PID控制系统研究

针对循环流化床锅炉床温控制系统,提出了一种采用粗调和微调相结合的、易于DCS组态实现的PID自整定方法。经过典型工况下的仿真研究表明,采用该方法建立的循环流化床锅炉床温控制系统比常规控制方案具有更好的控制品质和更强的抗干扰能力,而且计算工作量小,实时性能满足生产现场的要求。循环流化床锅炉以其燃料适应性广,对环境污染小的特点得到了迅速的推广应用,其燃烧控制系统跟传统燃煤锅炉相比有着明显的不同,床温控制系统一直是其控制的难点。

Study on the Self-tuning PID Control System for the Circulated Fluidized Bed Boiler

A self-tuning PID technique is proposed for the circulating fluidized bed boiler bed temperature control system.It makes use of the methed of combining the coarse-tuning with the thin-tuning to reconcile PID parameters online.It can be easily accomplished by DCS.The simulation results shows that the control system has better performance and stronger adaptive capability than the conventional control plan.It can raise its robust and has small capacity for counting.Its time suitability of the control sysytem c...