Adaptive backstepping control of hydraulic servo system with input saturation for rolling mill based on multi-model switching

For the problems of parameters change abruptly and input saturation of the rolling mill hydraulic servo systems, an adaptive backstepping control method based on multi-model switching is presented in this paper. Firstly, multiple models of the rolling mill hydraulic servo systems under different operating modes are established. Secondly, an auxiliary system is introduced to reduce the effects of input saturation, and the adaptive backstepping controllers are designed for all subsystem. With the help of common Lyapunov theory, the proposed method can guarantee stability of the multi-model switched system under arbitrary switching strategy. Finally, the simulation results demonstrate the effectiveness of the proposed control method.

[1]  Ouassima Akhrif,et al.  Stabilisation and control synthesis of switching systems subject to actuator saturation , 2010, Int. J. Syst. Sci..

[2]  Kumpati S. Narendra,et al.  Improving transient response of adaptive control systems using multiple models and switching , 1993, Proceedings of 32nd IEEE Conference on Decision and Control.

[3]  Fei Shumin.  Multiple-model switching control based on dynamic model bank , 2009 .

[4]  Tingshu Hu,et al.  Analysis of linear systems in the presence of actuator saturation and I-disturbances , 2004, Autom..

[5]  Jan Albert Mulder,et al.  Nonlinear Flight Control Design Using Constrained Adaptive Backstepping , 2007 .

[6]  Bin Yao,et al.  Integrated Direct/Indirect Adaptive Robust Control of Hydraulic Manipulators With Valve Deadband , 2011, IEEE/ASME Transactions on Mechatronics.

[7]  Shuzhi Sam Ge,et al.  Adaptive tracking control of uncertain MIMO nonlinear systems with input constraints , 2011, Autom..

[8]  Yi Yao,et al.  Fuzzy neural adaptive tracking control of unknown chaotic systems with input saturation , 2012 .

[9]  Rastko R. Selmic,et al.  Neural network control of a class of nonlinear systems with actuator saturation , 2004 .

[10]  Daizhan Cheng,et al.  Control of switched linear systems with input saturation , 2010, Int. J. Syst. Sci..

[11]  Peter I. Corke,et al.  Variable structure methods in hydraulic servo systems control , 2001, Autom..

[12]  Yonggang Chen,et al.  Control of switched linear systems with actuator saturation and its applications , 2012, Math. Comput. Model..

[13]  Jiao Xiao-hong.  Sliding mode variable structure control of multi-model switching for rolling mill hydraulic servo position system , 2010 .

[14]  James E. Bobrow,et al.  Experiments and simulations on the nonlinear control of a hydraulic servosystem , 1999, IEEE Trans. Control. Syst. Technol..