##
**Nonlinear systems analysis.
Reprint of the 2nd ed. of the 1993 original.**
*(English)*
Zbl 1006.93001

Classics in Applied Mathematics. 42. Philadelphia, PA: Society for Industrial and Applied Mathematics (SIAM). xvii, 498 p. (2002).

This is a reprint of the 1993 edition which was reviewed by A. Bacciotti (see Zbl 0759.93001). One should add to this review that the emphasis is on an open-loop approach, even if some sections deal with feedback stabilization (FS) and if feedback linearization (FL) is introduced at the end. This clarifies why the theory of ordinary differential equations is used so often. In fact, it constitutes a mathematical background for this book.

One finds however a chapter on differential geometric methods (where FL appears) added to the second edition, which replicates what can be found elsewhere, typically in A. Isidori’s monograph [Nonlinear control systems: An introduction (1985; Zbl 0569.93034)] and the ambiguities between coordinate free notations and representations in coordinates are preserved too.

The functional analytic perspective appears also especially in the treatment of input/output stability (where one finds the parts on FS).

The chapters have been reorganized in the second edition, and some sections on discrete systems have been added.

The treatment on absolute stability is probably the best to be found, and the book is recommendable.

One finds however a chapter on differential geometric methods (where FL appears) added to the second edition, which replicates what can be found elsewhere, typically in A. Isidori’s monograph [Nonlinear control systems: An introduction (1985; Zbl 0569.93034)] and the ambiguities between coordinate free notations and representations in coordinates are preserved too.

The functional analytic perspective appears also especially in the treatment of input/output stability (where one finds the parts on FS).

The chapters have been reorganized in the second edition, and some sections on discrete systems have been added.

The treatment on absolute stability is probably the best to be found, and the book is recommendable.

Reviewer: A.Akutowicz (Berlin)

### MSC:

93-01 | Introductory exposition (textbooks, tutorial papers, etc.) pertaining to systems and control theory |

93C15 | Control/observation systems governed by ordinary differential equations |

93C10 | Nonlinear systems in control theory |

34H05 | Control problems involving ordinary differential equations |

93D25 | Input-output approaches in control theory |

93D10 | Popov-type stability of feedback systems |

93D30 | Lyapunov and storage functions |

93B18 | Linearizations |

93D05 | Lyapunov and other classical stabilities (Lagrange, Poisson, \(L^p, l^p\), etc.) in control theory |