A design method of antiwindup control systems with unknown external signal

We examine antiwindup internal model control with control input saturation. Past studies of antiwindup control systems have not considered the influence of disturbance. We give a new design method-antiwindup internal model control systems with unknown external signal. This method is constructed by a fusion of the internal model control structure and the disturbance observer. Using the present method, the external signals do not exert a bad influence. upon the characteristics of the control systems. A numerical example is shown.