14,783 research outputs found
Marco Ivaldo, Sul male. Kant, Fichte, Schelling, Hegel, Edizioni ETS, Pisa 2021 («philosophica »). Un volume di pp. 136.
No full textMarco Ivaldo, Sul male. Kant, Fichte, Schelling, Hegel, Edizioni ETS, Pisa 2021 («philosophica»
A Model-Based Method for Seamless Web and Mobile Experience
No full textConsumer-centered software applications nowadays are required to be available both as mobile and desktop versions. However, the app design is frequently made only for one of the two (i.e., mobile first or web first) while missing an appropriate design for the other (which, in turn, simply mimics the interaction of the first one). This results into poor quality of the interaction on one or the other platform. Current solutions would require different designs, to be realized through different design methods and tools, and that may require to double development and maintenance costs. In order to mitigate such an issue, this paper proposes a novel approach that supports the design of both web and mobile applications at once. Starting from a unique requirement and business specification, where web- and mobile-specific aspects are captured through tagging, we derive a platformindependent design of the system specified in IFML. This model is subsequently refined and detailed for the two platforms, and used to automatically generate both the web and mobile versions. If more precise interactions are needed for the mobile part, a blending with MobML, a mobile-specific modeling language, is devised. Full traceability of the relations between artifacts is granted
Hardware in the Loop Test-rig for Pantograph Active Control Evaluation
No full textAn actively controlled pantograph can increase the
performance of current collection at high speed. In the last few
years, it appears possible to transfer the knowledge based on
numerical experiments, to the real operating condition. An
important step towards this direction is the set up of a laboratory
test bench in that allows actuation and control testing, prior to
perform on line tests, in order to demonstrate their feasibility.
This paper presents an hardware in the loop (HIL) test-rig, which
allows to reproduce the dynamical interaction between overhead
lines and pantograph in high speed railways. Using this
laboratory set-up, experimental investigation on the problems
related with pantograph-overhead Line (OHL) interaction can be
performed
A Mechatronic Real-Time Model for Railway Vehicle Emulation
No full textThe Interoperability Technical Specification of European Railway led up the definition of new
standards to provide unified test procedures for all railway components. In particular, it is necessary to
perform traction and braking tests to verify the traction controller performance before entry into service.
To make less expensive and faster this procedures, which is carried out actually on real railway vehicles, a
new test bench, combining software with hardware in the loop, was developed. This paper presents the
new mechatronic real-time model of the railway vehicle used on this test bench to emulate the behaviour
of the real system
Emulazioni di veicoli ferroviari: un modello meccatronico real-time
No full textLa Specifica Tecnica di Interoperabilità tra le reti
ferroviarie europee ha portato alla definizione di
norme e procedure unificate per la verifica dei veicoli
ferroviari. In particolare, sono state previste prove
di trazione e frenatura in linea atte a valutare
le prestazioni dei controllori di trazione prima
dell’entrata in servizio dei veicoli ferroviari.
Tali prove utilizzano il veicolo ferroviario completo
e sono quindi costose e lunghe. Si propone un banco
prova innovativo che, emulando il comportamento
del veicolo ferroviario, esegue più velocemente
e in modo meno costoso le prove e si descrive il
modello meccatronico in tempo reale implementato
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