从系统可靠性与控制算法二方面介绍DMC—500系列工业锅炉微机控制系统.采用“容错”与“抗错”二种技术互补的设计原则,通过硬件与软件的标准化、模块化设计,抗干扰与冗余设计等,大大提高了系统的可靠性.为了解决工业锅炉自控对象的建模与系统辨识的困难,采用变型PID控制和分层递阶智能控制算法,取得了良好的控制效果. This paper introduces the DMC-500 series of industrial boiler microcomputer control system from two aspects of system reliability and control algorithm.Using the design principle of “fault-tolerant” and “anti-error”, through the standardization of hardware and software, modular design, And redundancy design, greatly improve the reliability of the system.In order to solve the industrial boiler control object modeling and system identification difficulties, using variant PID control and hierarchical hierarchical intelligent control algorithm, and achieved good control effect.