A generalized active disturbance rejection control method for nonlinear uncertain systems subject to additive disturbance

作者：Zhang, Chuanlin; Yang, Jun^*; Li, Shihua; Yang, Ning

来源：Nonlinear Dynamics, 2016, 83(4): 2361-2372.

DOI：10.1007/s11071-015-2487-1

• Nonlinear uncertain system
• Active disturbance rejection control
• Additive disturbances
• Domination
• Compensation

This paper investigates a generalized active disturbance rejection control framework for a class of uncertain nonlinear systems subject to additive disturbance. First, a new extended state observer with less dependence of the system information is developed which will enable an easy-transplantable characteristic for nonlinear systems with variable nonlinearity restrictions. Then integrating with an output feedback domination technique, an effective disturbance attenuation law is designed to handle a wider class of systems whose nonlinear items may go beyond the strict-feedback structure and Lipschitz continuity requirement. A rigorous stability analysis is also carried out with a semi-global output feedback control objective. Numerical simulation results and an application into a DC-DC buck power converters demonstrate the feasibility and improved control performance of the proposed method.

• 出版日期2016-3
• 单位东南大学; 上海电力大学