The book is motivated by the pivotal issue: what is the performance
limit of active control and energy harvesting? It aims to develop
systematic design methodologies with a "visualization technique" where
the performance limit can be readily determined solely based on visual
inspections.
Modern technological systems have evolved toward high speed, heavy load,
lightweight, flexible operation and extreme conditions, as demonstrated
in aerospace, marine, transportation and manufacturing industries. The
associated vibration and noise issues have become such problematic that
they may significantly confine the performance of the systems, to say
the discomfort at least.
Through the geometric representation of the performance specifications,
fundamental issues such as (1) the existence of feasible controllers;
(2) the optimality of controllers; (3) the performance limit of
controllers; (4) compromisability among the performance specifications;
(5) the synthesis of controllers; and (6) the influence of constraints
on optimal solutions can all be resolved within the proposed framework.
The state of the art is thus refined with a new approach complementary
to those optimization-based routines, where extra effort would have to
be exercised to disclose the compromisability of performance
specifications.
The proposed book will result in a new design methodology-performance
limit-oriented active control. It was initiated by the author with the
project "Active Control for Performance Limit" (ACPL). A series of
fundamental results are obtained and will be disseminated in this book.
The results are verified through extensive numerical demonstrations and
are expected to provide useful guidance for practical engineering in the
vibration and noise industry and research.