A certain nonlinear approach controller is introduced to meet the requirement of a special control in the process when a hydraulic looper is approaching strip steel.

• 基于液压活套在趋近带钢阶段的特殊控制要求,介绍一种非线性趋近控制器,分别就其数学模型、动态特性进行了描述和分析,并介绍了其硬件、软件的实现过程。