TITLE: LOOP-SHAPING ROBUST CONTROL
PUBLISHER: WILEY LANGUAGE: ENGLISH
LINK:
http://is.gd/pINo4n RELEASE TYPE: RETAIL
FORMAT: PDF RELEASE DATE: 2014.05.27
ISBN: 9781848214651 STORE DATE: 2013
SAVED.MONEY: 101 EURO DISKCOUNT: 01 x 05MB
AUTHOR: PHILIPPE FEYEL
BOOK
The loop-shaping approach consists of obtaining a specification
in relation to the open loop of the control from specifications
regarding various closed loop transfers, because it is easier to
work on a single transfer (in addition to the open loop) than on
a multitude of transfers (various loopings such as set
point/error, disturbance/error, disturbance/control, etc.). The
simplicity and flexibility of the approach make it very well
adapted to the industrial context.This book presents the
loop-shaping approach in its entirety, starting with the
declension of high-level specifications into a loop-shaping
specification. It then shows how it is possible to fully
integrate this approach for the calculation of robust and
efficient correctors with the help of existing techniques, which
have already been industrially tried and tested, such as
H-infinity synthesis. The concept of a gap metric (or distance
between models) is also presented along with its connection with
the prime factors of a set of systems shaping a ball of models
as well as its connections with robust synthesis by loop-shaping
in order to calculate efficient and robust correctors. As
H-infinity loop-shaping is often demanding in terms of the order
of correctors, the author also looks at loop-shaping synthesis
under an ordering constraint. Two further promising lines of
research are presented, one using stochastic optimization, and
the other non-smooth optimization. Finally, the book introduces
the concept of correction with two degrees of freedom via the
formalism of prime factorization.Avenues for future work are also
opened up by the author as he discusses the main drawbacks to
loop-shaping synthesis, and how these issues can be solved using
modern optimization techniques in an increasingly competitive
industrial context, in accordance with ever more complex sets of
functional specifications, associated with increasingly broad
conditions of usage
Contents
Introduction1. The Loop-shaping Approach2. Loop-shaping
H-infinity Synthesis3. Two Degrees-of-Freedom Controllers4
Extensions and OptimizationsAppendix 1. Demonstrative Elements on
the Optimization of Robust Stabilization with Order
ConstraintAppendix 2. Establishment of Real LMIs for the
Quasi-Convex Problem of Optimization of the Weighting
Functions
About the Authors
Philippe Feyel is an R&D Engineer for the high-tech company Sagem
Defense Securite, part of the defence and security business of
the SAFRAN group, in Paris, France
