Abstract：Cold rolled strip steel is part of the high-end and fine steel,online flatness measurement and control is the high-end core technology of cold strip steel rolling. The independent innovation of the flatness measurement and control system is the important demand of upgrading steel industry and building steel powerhouse in China. At present,the market advantage of the flatness measurement and control technology is occupied by some foreign countries,but the domestic system is replacing the import system step by step,and is expanding the use scale and promoting the technology perfection. In order to develop advanced flatness measurement and control system,the key technologies have to be solved are the high precision and high quality flatness meter,the control devices and methods with complete and power functions,and the high precision and high speed mathematics models. The industrial flatness meter can be mainly classified as two types, they are contact and non-contact. The contact flatness meter reflects flatness by measuring the transvers distribution of strip tension, the non-contact flatness meter reflects flatness by measuring the shape wave of strip. The contact flatness meter is widely used with high reliability,durability and accuracy, and its development directions are the whole-roller seamless flatness roller,the wireless signal transmission device,and the accurate data processing method. The main types of the mathematics model for flatness control can be classified as the mechanism model and the intelligence model in accordance with the principle and method of modelling, the analysis model and the control model in accordance with the property and purpose of model, the multipoint control model and the component control model in accordance with the expression mothed of flatness. The development directions of flatness control model are the cooperative modelling between mechanism and intelligence,the dynamic simulating prediction and decoupling control,and the cooperative optimization control with many devices and methods. In order to improve the level of flatness measurement and control technology, three key technologies to have to be made breakthrouth are the channel coupling and decoupling mechanism models of the whole-roller flatness meter,the dynamic simulating and decoupling models of the flatness control,and the high precision intelligent method of the flatness control modelling.
刘宏民, 于华鑫, 王东城, 宋明明, 张帅, 徐扬欢. 冷轧带钢板形测控技术的发展状况和关键问题[J]. 钢铁, 2022, 57(11): 22-32.
LIU Hong-min, YU Hua-xin, WANG Dong-cheng, SONG Ming-ming, ZHANG Shuai, XU Yang-huan. Development state and key problems on flatness measurement and control technology of cold strip steel rolling[J]. Iron and Steel, 2022, 57(11): 22-32.
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