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Robust global stabilization of a class of uncertain feedforward nonlinear systems

โœ Scribed by L. Marconi; A. Isidori

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
168 KB
Volume
41
Category
Article
ISSN
0167-6911

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โœฆ Synopsis

The problem of global asymptotically stabilizing a certain class of uncertain feedforward nonlinear systems is considered. The control law is obtained by nesting saturation functions whose amplitude can be rendered arbitrarily small. With respect to previous works on the subject the design procedure is able to deal with uncertain (possibly time-varying) parameters ranging within the prescribed compact sets which can a ect also the linear approximation of the system. The small gain theorem for nonlinear systems which are input to state stable "with restrictions" is shown to be a key tool for designing a state feedback saturated control law.

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Input disturbance suppression for a class of feedforward uncertain nonlinear systems
โœ Lorenzo Marconi; Alberto Isidori; Andrea Serrani ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 148 KB

This paper deals with the problem of asymptotically rejecting bounded unknown disturbances a ecting the input channel of a feedforward uncertain nonlinear system. The problem is solved assuming that the matched disturbance belongs to the class of signals generated by an autonomous neutrally stable e