An improved model-free adaptive control for a class of nonlinear large-lag systems
一类非线性大滞后系统的改进无模型自适应控制

For a class of nonlinear large-lag plants in industry,the pseudo-partial-derivative(PPD)is used to dynamically linearize the nonlinear system,and the tracking-differentiator(T-D)is applied to predict the plant future output.Then,an improved model-free adaptive control(IMFAC)algorithm is presented.Through rigorous analysis,the BIBO stability and convergence of the proposed algorithm are also proved.The simulation results show the effectiveness of the algorithm.