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Title: The does not provide insight into the subject of Control
Review: With the exception of one chapter, this book is about a narrow and unproven approach to control system design: The L1 theory. There is almost surely no real life plant that carries a controller based on this design. Additionally, the authors present a mathematical treatment of an engineering subject, but the treatment fails to give the experienced control engineer any insight.From the point of view of mathematical control theory, the book is simply a watered down version of a few topics in infinite dimensional optimization and functional analysis. It is based on an application of the Hahn Banach theorem to a formulation of the control problem. It also contains a lot of mathematical facts, but it does not tie them well to control theory. So the mathematician will get little insight into the subject of control.Here we have a book that is neither useful to the engineer, nor to the mathematician.
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