Abstract: This paper presents an extension of the L1 adaptive controller to a class of nonlinear systems where the control effectiveness is timevarying and unknown, but with a known sign. Moreover, this class of nonlinear systems ...

Abstract: This paper presents an approach to use the L1 adaptive controller for a class of uncertain systems in the presence of unknown Preisachtype hysteresis in input, unknown timevarying parameters, and unknown timevarying ...