Multi-model switching control with input saturation for hydraulic servo system in rolling mill
输入有饱和的轧机液压伺服系统的的多模型切换控制

To deal with the structure jump problem caused by the abrupt change of elastic load force and the external load force in mill hydraulic servo system, we develop and optimize a set of models for the controlled system with control input saturation in different continuous operation conditions. An anti-saturation state-feedback controller is designed by using the linear matrix inequality(LMI) method for each model, and a switching control scheme is proposed for the whole system. The stability is analyzed for the designed switched system with input saturation and external disturbances. Simulation result for the mill hydraulic servo system demonstrates that the designed control system has a good stability and desired static/dynamic performance.