热连轧机AGC系统的优化

针对传统AGC系统中弹跳方程受轧机刚度系数精度和弹跳曲线线性条件的影响而无法得到精确的机架轧出厚度的问题，提出以轧机弹跳特性曲线为基础的机架轧出厚度计算方法，并以此为基础得到新的前馈AGC、厚度计AGC及其与监控AGC的相关性模型.将优化后的AGC系统应用于某热连轧现场，实际应用表明，对于厚度规格35mm的带钢，允许厚度偏差±20μm时，厚度精度命中率可达962%以上，远优于现场控制要求.

Optimization of AGC System for Hot Strip Mills

Aiming at the problem that the accurate rack rolled thickness was not available from the spring equation in the traditional automatic gauge control AGC system which was limited by the accuracy of mill stiffness coefficient and the linear conditions of the spring curve, a method based on the mill stretch characteristic curve was proposed to calculate the strip thickness, and then the new feed forward AGC, gaugemeter AGC and the correlation models between the gaugemeter AGC and monitor AGC were put forward. The optimized AGC system was applied successfully in a hot strip mill, and the practical application showed that the thickness of the strip steels with the specification of 3.5 mm was controlled within the allowable thickness deviation of ±20 μm, and the thickness precision validation rate reached over 96.2%, which satisfied the requirement of production site control.