Research on two kinds of universal output feedback adaptive controller

Based on the previous work in [4], two kinds of universal output feedback control law are designed for a family of SISO uncertain nonlinear systems. One is the double dynamic gain method which can reduce the observer gain, so many problems caused by high gain feedback can be avoided. The other is a further research on the former double gain method which can adjust poles of the whole close-loop system according to the system error. Better performance is showed in the numerical simulation with the later method, so it is meaningful and more than an extension of all the previous methods.