Research status and perspectives for cold rolling flatness control technology
The cold rolling flatness control is a complex system engineering,involving rolling process,control theo-ry,applied mathematics,computer communications,as well as artificial intelligence and other subject areas.The cold rolling flatness control technology is one of the core technologies of iron and steel industry,it is key technologi-cal component to realize the stable production of high-quality steel strip,representing the highest levels of a country in the field of iron and steel technology,and its related technology has always been the difficulty and hot spot in the field of cold rolling technology research.An overview of the research progress in flatness characterization and meas-urement technology,flatness presetting control technology,flatness feed-forward control technology,flatness closed-loop feedback control technology and core flatness control models is provided,and the current status and characteristics of various control technologies are analyzed.Based on this foundation,combined with the research re-sults accumulated by the author's team in the field of cold rolling flatness control for many years,the research route and development direction with digital twin and cyber-physical systems(CPS)as the technical architecture are pro-posed.By continuously focusing on the key technical problems in the field of cold rolling flatness control,combining data processing technology,artificial intelligence and other cutting edge knowledge,integrating the rolling mecha-nism and optimization control theory,a digital research methodology for cold rolling flatness control technology is proposed to enhance the technical level of thin strip cold rolling production and product quality,promote the rolling industry from process technology to product quality,and promote the development of the iron and steel industry in the direction of high-precision products.
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