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介绍了磷酸盐协调处理控制系统的组成、原理和方法,重点讨论了该控制系统中的控制算法,解决了开关量和模拟量混合输入多变量控制问题.实际运行结果表明,该系统运行稳定可靠,所采用的改进PI算法使得控制效果良好.该系统能保证炉水pH值、磷酸根值和R值均处于合格范围之内,对提高炉水品质具有重要作用.
The composition, principle and method of phosphate coordinated control system are introduced, and the control algorithm of the control system is discussed emphatically, which solves the problem of multivariable mixed input of switch quantity and analog quantity.The actual operation results show that the system is stable and reliable , And the improved PI algorithm adopted makes the control effect well.This system can ensure the pH value, phosphate value and R value of the boiler water are within the qualified range, and plays an important role in improving the quality of the boiler water.