冷轧板形控制技术的研究现状及展望

Research status and perspectives for cold rolling flatness control technology

冷轧板形控制是一个复杂的系统工程,涉及轧制工艺、控制理论、应用数学、计算机通信及人工智能等多个学科领域。冷轧板形控制技术是钢铁工业的核心技术之一,是实现精品板带钢稳定生产的关键技术环节,代表一个国家在钢铁技术领域的最高水平,其相关技术一直是冷轧领域技术研究的难点和热点。分别对板形表征及检测技术、板形预设定控制技术、板形前馈控制技术、板形闭环反馈控制技术以及核心板形控制模型等方面的研究进展进行了概述,分析了各种控制技术的现状及特点。在此基础上,结合作者团队在冷轧板形控制领域多年耕耘积累的研究成果,提出了以数字孪生及信息物理系统(CPS)为技术架构的研究路线和发展方向。通过持续聚焦冷轧板形控制领域的关键技术问题,结合数据处理技术及人工智能等学科前沿知识,融合轧制机理及优化控制理论,提出冷轧板形控制技术的数字化研究方法,以提升薄带材冷轧生产的技术水平和产品质量,推动轧制行业从工艺技术到产品质量获得全面提升,促进钢铁行业向高精产品方向发展。

The cold rolling flatness control is a complex system engineering,involving rolling process,control theory,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 technological 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 measurement 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 results 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 proposed.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 mechanism 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.