Analysis of dynamic behaviors of tandem cold mills using generalized dynamic and control equations

Abstract

A generalized equation set is proposed to investigate dynamic behaviors of tandem cold mills. The system is composed of the intrastands and the interstands equations and the boundary conditions of the first and the last mill stands. The solution provides detailed dynamic effects of disturbance variables such as anneal and entry gauges, hardness, and roll eccentricity. The transportation delay is considered as well. The mill dynamic equations and the control equations can be combined to form a linear system. The mill performance and the actuator response can be solved directly from the linear system.