80 research outputs found
Scheda tesi: Comunicare la Storia all’epoca dello storytelling. La Trilogia sporca dell’Italia di Simone Sarasso
No full textComunicare la Storia all’epoca dello storytelling. La Trilogia sporca dell’Italia di Simone
Sarasso
di Gabriele Gelmini
Scheda Tesi
RELATORE: prof. Luigi Weber
CORRELATORE: prof.ssa José Martínez Rubio
CORSO DI LAUREA: laurea magistrale in Italianistica, culture letterarie europee, scienze linguistiche
UNIVERSITA': Università degli Studi di Bologna – Alma Mater Studiorum
ANNO ACCADEMICO: 2015-201
Analysis and development of an automatic eCall for motorcycles: a one-class cepstrum approach
No full textDesign and experimental validation of a physics-based oxygen storage — thermal model for three way catalyst including aging
No full textIn this paper, a physics-based, oxygen storage-thermal model for a three way catalyst (TWC) is developed and experimentally validated. This model is then extended to account for aging impacts on the TWC. In order to identify the model parameters, a series of ad hoc experiments were designed to test the device over various engine operating conditions. Four TWCs of different ages were tested to investigate the effects of TWC aging on the oxygen storage dynamics. Results show that aging can be lumped within a single model parameter, referred to as oxygen storage capacity. Sensitivity analysis shows only negligible dependence of oxygen storage capacity on catalyst operating temperature. The comprehensive model is validated over real driving conditions for different catalyst ages. The developed model has the potential to enhance the design of optimization-control techniques for fuel consumption benefits and on-board diagnostics health measurement robustness. (C) 2017 Elsevier Ltd. All rights reserved
Analysis and development of a novel algorithm for the in-vehicle hand-usage of a smartphone
No full textColloqui sui metodi di ricerca per la Storia, il Disegno e il Restauro dell’Architettura
No full textIl dottorato di ricerca in Storia, Disegno e Restauro dell’Architettura nasce come risultante dalla “fusione a freddo” tra il Dipartimento di Storia dell’architettura, restauro e conservazione dei beni architettonici e quello di Rilievo, analisi e disegno dell’ambiente e dell’architettura a seguito dei riordini amministrativi conseguenti alla riforma Gelmini. La confluenza in un’unica struttura delle numerose competenze, provenienti da settori scientifici disciplinare apparentemente paralleli, ha permesso di fornire alla formazione di terzo livello un inedito supporto metodologico
Automatic crash detection system for two-wheeled vehicles: design and experimental validation
No full textIn the insurance telematics context, four-wheeled vehicles are being equipped with e-Boxes installed on the battery, allowing an online monitoring of the vehicle motion thanks to an inertial measurement unit and a GPS unit. The main service that the e-Box enables is the automatic reconstruction of the real crash dynamics, and the detection of potentially dangerous situations, with the subsequent automatic activation of rescue operations, both for driver and passengers and for the vehicle itself. How to design such system for two-wheeled vehicles is far from trivial, as the dynamics of two-wheelers is much different, and so are the ways in which accidents may occur. In this work, a novel crash detection algorithm for two-wheeled vehicles is presented, and its validity is proved against experimental data. (C) 2019, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved
A Data-Driven, Vehicle-Independent Usage Monitoring System for Shared Fleets: Assessing Vertical and Longitudinal Wear
No full textAutomatic systems that can monitor the usage profile of vehicles are of particular interest in shared fleets because similar vehicles might be subject to radically different usage modes according to individual driving styles and trip demands. Moreover, such systems must be as vehicle independent as possible so as to be widely applicable without specific training phases
Automatic eCall in Powered Two-Wheeler: A Dynamics-Based Approach
No full textPowered two-wheelers exhibit complex dynamics, primarily due to their broader range of possible attitude configurations compared to four-wheelers. This is especially true when considering accident scenarios, in which the dynamics can be affected by both high-frequency events, such as in high-sides, marked by rapid variations of the characteristics signals, and low-frequency events, such as in side slips, which exhibit slower and monotonic change in the same quantities. Therefore, designing an effective automatic eCall system for this type of vehicle is particularly challenging, while at the same time, it can significantly increase safety in dangerous situations. This paper proposed a novel approach for detecting falls of two-wheeled vehicles that avoids missed detections while minimizing the number of false alarms, which would heavily undermine its usability. We show, based on extensive analysis of a wide range of experimental data, why and how the proposed approach allows us to overcome the limitations of the existing proposal, ensuring a consistent detection of the wide range of falls that can happen on two-wheelers, also providing a detailed comparison with the scientific literature
Development and Experimental Validation of a Dual Extended Kalman Filter for Three Way Catalytic Converter
No full textA three way catalytic converter (TWC) is responsible for conversion of engine out hazardous pollutants such as carbon monoxide (CO), nitrogen oxides (NOx) and hydrocarbons (HC) into carbon dioxide (CO2), water (H2O) and (N-2) nitrogen. TWC conversion efficiency highly depends on the amount of oxygen stored in the converter, or State of Oxygen (SOX). Estimation of SOX during real time operation is key controlling the TWC behaviour maximizing its efficiency. Moreover, the decrease of TWC conversion efficiency over converter lifetime due to mechanical, chemical and thermal factors, is observed through the decrease of a macroscopic quantity, the Oxygen Storage Capacity (OSC). In this paper, a Dual Extended Kalman Filter (d-EKF) to estimate TWC SOX and OSC is presented. The observer is built upon an experimentally validated, physics-based model of the converter developed by the same authors in a previous work. The nonlinear partial differential equation-based TWC model is properly adapted, through the finite discrete method, for real-time estimation within a vehicle engine-control unit (ECU). Experimental results collected from a TWC instrumented with wide-range oxygen sensors show the ability of the dual observer to robustly estimate both SOX and the catalyst age
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