High-precision and fast-response thickness control method for hot continuous rolling equipment

• Main Authors: NIE MENGQI, ZHANG CHAO, JING YONGLIANG
• Format: Patent
• Language: Chinese; English
• Published: 08.08.2023
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING

The invention relates to a thickness control method of high-precision and fast-response hot continuous rolling equipment, the hot continuous rolling equipment comprises N groups of roller mechanisms, a screw-down system, a frequency conversion system and a thickness control system, and the thickness value of strip steel rolled by the roller mechanisms is input into the thickness control system; the thickness control method of the high-precision fast-response hot continuous rolling equipment comprises the following steps executed by the thickness control system: receiving a thickness deviation by a feedforward pre-estimation control regulator F, calculating to obtain an intermediate quantity KG, calculating and outputting a thickness feedforward pre-estimation regulation quantity according to the intermediate quantity KG, receiving the thickness deviation by a thickness feedback proportional-integral regulator M, and calculating and outputting the thickness feedback pre-estimation regulation quantity according