| 摘要 |
A method for controlling a hydraulic valve of a blower in a blast furnace is provided to make the blow rate stable and prevent mechanical damage to the blower due to surging. A method for controlling a hydraulic valve of a blower in a blast furnace comprises a step of transmitting a valve opening degree signal to a measured value processing unit(100), a step of generating a converted valve opening degree signal based on the transmitted valve opening degree signal, a step of setting a valve opening target value in a target value processing unit(200), a step of transmitting the converted valve opening degree signal value and the valve opening target value to a control operation processing unit(300), a step of determining a control input deviation for the converted valve opening degree signal value and the valve opening target value, a step of transmitting the control input deviation to an output processing unit(400), and a step of, when it is necessary to vary the operation speed of an electric-hydraulic conversion apparatus(6), varying the output speed from output processing unit and transmitting it to the electric-hydraulic conversion apparatus.
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