Awards

BEST INDUSTRIAL PAPER [list]

SEMI-ACTIVE VISCOUS DAMPER FOR CONTROLLING CIVIL ENGINEERING STRUCTURES SUBJECTED TO EARTHQUAKES
Fernando Oliveira(1), Miguel Ayala Botto (2), Afzal Suleman (2) and Paulo Morais (1)
(1) National Laboratory for Civil Engineering, Lisbon, Portugal
(2) IDMEC, Instituto Superior Técnico, Technical University of Lisbon, Portugal

Abstract: This paper presents the results of a study to evaluate the performance of several control algorithms for a semi-active fluid damper aiming to reduce earthquake induced vibrations. The performance of each algorithm is compared considering a single degree of freedom dynamical model subjected to three alternative input actions: two time series of filtered white noise and a synthesized seismic action. The performance of the system is evaluated by measuring the reduction in relative displacement and acceleration. Comparisons are also made with the passive and active systems. The results demonstrate that semi-active devices can be an option for structural vibration mitigation.

BEST STUDENT PAPER [list]

OBSERVABILITY ANALYSIS OF THE SIMULTANEOUS UNDERWATER VEHICLE LOCALIZATION AND MAPPING BASED ON RANGING MEASUREMENTS
Mohammadreza Bayat and A. Pedro Aguiar
Laboratory of Robotics and Systems in Engineering and Science(LARSyS), Instituto Superior Técnico (IST), Lisbon, Portugal.

Abstract: The localization of an autonomous underwater vehicle (AUV) is a challenging and important problem in marine robotics. In this paper we investigate the observability problem of the process of Simultaneous Localization and Mapping (SLAM) of an AUV equipped with inertial sensors, a depth sensor, and an acoustic ranging device that provides relative range measurements to stationary beacons. For the case that the motion of the AUV corresponds to constant linear and angular velocities (expressed in the body-frame), also known as trimming or steady-state trajectories, we provide conditions under which it is possible to reconstruct the initial state of the resulting SLAM system (and in particular the position of the AUV). We show that the unobservable subspace UO restricted to the assumption that the position of one of the beacons or the initial position of the AUV is known, contains only the zero vector with exception of a particular case where the UO is composed by a finite set of isolated points. Numerical tests that illustrate the results derived are presented and discussed.

LIST OF PAPERS NOMINATED FOR BEST INDUSTRIAL PAPER

LOIRAL WIND PARK MODELLING USING ARTIFICIAL NEURAL NETWORKS
Dário Fernandes, Darío Baptista, Beatriz Jardim, Agostinho Figueira and Fernando Morgado-Dias

DESIGN AND IMPLEMENTATION OF CONTROLLED ATMOSPHERE CHAMBERS FOR CHERRY CONSERVATION
José Boaventura Cunha, Paulo Moura Oliveira, E. J. Solteiro Pires and Jaime Cavalheiro

AUTOMATIC PILOT PLANT FACILITY DESIGNED FOR THE CONTROLLED AGEING OF MADEIRA WINES
José C. Marques, Vanda Pereira, Ana C. Pereira, Mon-Chu Chen, Catarina Novo, Lúcia Bilro, Nélia Alberto, Paulo Antunes and João L. Pinto

A MULTI-AGENT APPROACH FOR OUTLIER ACCOMMODATION IN WIRELESS SENSOR AND ACTUATOR NETWORKS
Alberto Cardoso, Amâncio Santos, Gonçalo B. Nunes and Paulo Gil

SEMI-ACTIVE VISCOUS DAMPER FOR CONTROLLING CIVIL ENGINEERING STRUCTURES SUBJECTED TO EARTHQUAKES
Fernando Oliveira, Miguel Ayala Botto, Afzal Suleman and Paulo Morais

LIST OF PAPERS NOMINATED FOR BEST STUDENT PAPER

ARTIFICIAL NEURAL NETWORKS IN THE SCOPE OF OPTICAL PERFORMANCE MONITORING
Vítor Ribeiro, Mário Lima and António Teixeira

ROLLING A PSEUDOHYPERBOLIC SPACE OVER THE AFFINE TANGENT SPACE AT A POINT
André Marques and Fátima Silva Leite

MODELING OMNIDIRECTIONAL MOBILE ROBOTS: AN APPROACH USING SIMTWO
Tiago P. Nascimento, António Paulo Moreira, Pedro Costa, Paulo Costa and André G. Scolari Conceição

DECISION SUPPORT SYSTEM FOR BUILDING RENOVATION
Ana Rita Campos and Rui Neves-Silva

FAULT TOLERANT RECONFIGURABLE CONTROL OF A WATER DELIVERY CANAL - ACTUATOR FAULTS
Inês Sampaio, João M. Lemos, Luís M. Rato and Manuel Rijo

DISTRIBUTED EVENT-BASED OBSERVERS FOR LTI NETWORKED SYSTEMS
Pablo Millan, Ubaldo Tiberi, Carlo Fischione, Dimos V. Dimarogonas, Karl H. Johansson and Francisco R. Rubio

TRAJECTORY CONSTRAINTS FOR ROBUST VEHICLE FORMATION CONTROL
Jorge Estrela da Silva, João Borges de Sousa and Fernando Lobo Pereira

ASYMPTOTIC STABILITY OF LINEAR STOCHASTIC SYSTEMS WITH DELAY DRIVEN BY A BERNOULLI PROCESS
Alessandro N. Vargas and João B. R. do Val

KARNUMA AN EDUCATIONAL TOOL FOR DIGITAL SYSTEMS
Valentim Freitas and Fernando Morgado-Dias

OBSERVABILITY ANALYSIS OF THE SIMULTANEOUS UNDERWATER VEHICLE LOCALIZATION AND MAPPING BASED ON RANGING MEASUREMENTS
Mohammadreza Bayat and A. Pedro Aguiar