| 摘要 |
A method for controlling furnace temperature of a fired heating furnace is disclosed, comprising: measuring furnace temperatures to obtain furnace temperature feedback values; calculating the differences between furnace temperature setting values and the furnace temperature feedback values as discrepancy values DV 1 , in accordance with the furnace temperature feedback values and the furnace temperature setting value; calculating the differences between the furnace temperature setting values and the furnace temperature feedback values in a unit time, i.e., the gradient of furnace temperature change values, as discrepancy values DV 2 ; obtaining a speed V of a fired heater machine set from a speed adjuster of the fired heater machine set, and obtaining a first multiple feed forward output components FF V in accordance with the speed V of the machine set (V); obtaining a second multiple feed forward output components FF T in accordance with the differences between the furnace temperature setting values and the furnace temperature feedback values, i.e., the discrepancy values DV 1 ; looking up a PID control parameter in accordance with the discrepancy values DV 1 and DV 2 , based on fuzzy control rule, and creating an adjusting control parameter OP 1 in accordance with the PID control parameter; controlling a valve for regulating coal gas flow and a valve for regulating air flow by combining the adjusting control parameter OP 1 with the first multiple feed forward components FF V and the second multiple feed forward components FF T as a final control output value. |
