A narrow window control method and system for molten steel quality based on dual-mode switching
A control method and dual-mode technology, applied in the field of converter steelmaking, can solve problems such as poor quality control of molten steel, achieve low energy consumption and high quality, and improve product quality
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0065] refer to figure 1 The method for controlling molten steel quality in a narrow window based on dual-mode switching provided in Embodiment 1 of the present invention includes:
[0066] Step S101, according to the on-site operation system and the requirements of the smelted steel type, obtain the narrow window interval of the end point process of the converter;
[0067] Step S102, determining the modal decision-making mechanism for the control of the second blowing stage of converter steelmaking based on the twin support vector machine classification method of the fruit fly optimization algorithm;
[0068] Step S103, based on the modal decision-making mechanism, adaptive control is performed on the second blowing stage of the converter steelmaking.
[0069] The narrow-window control method of molten steel quality based on dual-mode switching provided by the embodiment of the present invention obtains the narrow-window interval of the end-point process of the converter acc...
Embodiment 2
[0071] refer to figure 2 The method for controlling molten steel quality in a narrow window based on dual-mode switching provided in Embodiment 2 of the present invention includes:
[0072] Step S201, according to the on-site operation system and the requirements of the smelted steel type, obtain the narrow window interval of the end point process of the converter.
[0073] Due to the increasingly fierce competition in the current iron and steel industry, in order to optimize the product structure and improve product quality, it is necessary to control the composition of molten steel at the end of converter steelmaking with a narrow window. It is possible to remove sulfur and phosphorus to the range required by the end point in advance, so the narrow window control of the end point molten steel composition is simplified to the narrow window control of the end point temperature of the molten steel and the narrow window control of the carbon content of the end point of the molt...
Embodiment 3
[0192] refer to Figure 8 , this example chooses to install and operate on a 150t converter in a steel plant. Firstly, according to the on-site operation system and the requirements of smelting steel grades, obtain the narrow window interval of the end-point process of the converter; then use the historical data to establish a binary classification model to determine the modal decision of the control system Then for the univariate control problem (supplementary oxygen blowing amount), SISO model-free adaptive control is adopted, and the variable forgetting factor is introduced into the model-free adaptive control algorithm; finally, for the bivariate coupling control problem (supplementary oxygen blowing amount and adding cooling Dose), using MIMO model-free adaptive decoupling control, the coupling problem in the control system is regarded as a system disturbance for decoupling control.
[0193] Specifically, follow the steps below:
[0194] Step S301, combining the types of...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More