Nonlinear Disturbance Observer Based Control for Systems with Arbitrary Disturbance Relative Degree
The existing nonlinear disturbance observer based control (NDOBC) is only applicable for the systems whose disturbance relative degree is higher than or equal to the input relative degree. The disturbance attenuation problem of nonlinear systems with arbitrary disturbance relative degree is presented in this paper via a novel NDOBC approach. A systematic method is proposed to design the disturbance compensation gain. It is shown that the disturbance can be eliminated from the output channel in steady-state with the proposed method. The input-to-state stability of the closed-loop system is also investigated rigorously by regarding the disturbance as the input of the augmented system. Simulation example of a missile demonstrates that the proposed method provides an effective way in rejecting disturbances with arbitrary disturbance relative degree.
YANG Jun CHEN Wen-Hua LI Shihua CHEN Xi
School of Automation, Southeast University, Nanjing 210096, P.R.China Department of Aeronautical and Department of Aeronautical and Automotive Engineering, Loughborough University, LE11 3TU, UK School of Automation, Southeast University, Nanjing 210096, P.R.China
国际会议
The 30th Chinese Control Conference(第三十届中国控制会议)
烟台
英文
1-6
2011-07-01（万方平台首次上网日期，不代表论文的发表时间）