R. Hotzel et L. Karsenti, ADAPTIVE TRACKING STRATEGY FOR A CLASS OF NONLINEAR-SYSTEMS, IEEE transactions on automatic control, 43(9), 1998, pp. 1272-1279
This paper presents an adaptive feedback tracking strategy for a class
of uncertain single-input/single-output systems in strict parametric
feedback form with nonlinear time-varying parameterization. The tracki
ng scheme is based on a backstepping design. A local stability result
is obtained via Lyapunov arguments.