(local seminar) Report on my recent visit to Acoustics Research

Evgeny Lakshtanov, Univ. de Aveiro
Abstract: Recently I had a short scientific visit to the acoustics research
institute in Vienna. My objective was to communicate
with mathematicians who work closely with sound engineers in order to pick
up some statements of interesting mathematical problems. During this talk I
intend to share the results of this experience.
27 de Fevereiro de 2009, (Departamento de Matemática, sala Sousa Pinto,

(regular seminar) An asymptotic approach to conjugate time for bangbang

Orador: Cristiana J. Silva, Univ. de Aveiro.
Resumo: We focus on the minimal time control problem for
single-input control-affine systems dx/dt = X(x) + u1 Y1(x) in Rn, where the
scalar control u1 fulfills the constraint |u1()|=<1.
We recall the concept of conjugate time for the bang-bang case in these
systems and propose an asymptotic approach, based on a penalized procedure,
which allows the application of the well-known results (theoretical and
practical) on the conjugate times for the smooth case into the bang-bang
SEMINÁRIO - 20 de Fevereiro de 2009 (Departamento de Matemática, sala Sousa
Pinto, 11:30-12:30)


Centre for Research on Optimization and Control