1,721,078 research outputs found
Monitoring and Diagnostics of Stresses in Reciprocating Machines
No full textThis work presents a study for monitoring stresses in links of reciprocating machines by means of indirect measurements. A model of such a machine is a slider-crank mechanism actuated by an asynchronous electric motor with reduction gear. For this study, an experimental simulation apparatus was constructed, composed of a reciprocating machine, a direct-current tachometer as diagnostic sensor, and the necessary instrumentation for measurement of loads acting on the slider and thus stresses on the connecting rod.
The excellent agreement between the theoretical and experimental results shows the validìty of the solution for monitoring and diagnostics of reciprocating machines using a simple direct-current tachometer connected to an A/D
converter and then to a PC able to execute the fast Fourier transforms of the acquired signals.
The proposed method is particularly useful when direct measurements of stresses are difficult or particularly laborious. It also allows continuous monìtoring of the machine throughout its !ife time, with user access or denial to computerized information, as desired
Laser vision system to measure and track the attitude of a tether-stabilized satellite system in a laboratory simulator
No full textVol. 35 n 3, pag. 890-894, marc
A Diagnosis and maintenance system for an electromechanical energy storage machine based on a new type of fluidic transducer
No full textRealizzazione di un trasduttore di coppia a bassa rigidità torsionale ed elevata rigidità flessionale
No full textProgettazione e realizzazione di una galleria del vento subsonica per la caratterizzazione aerodinamica di tele da seccheria
No full text
Determinazione numerico sperimentale di modelli equivalenti semplificati per il calcolo della risposta forzata di componenti meccanici alleggeriti
No full textSample Manipulation with Robotic Arm for planetary exploration
No full textThe concept of a general-purpose
analyser for extra-terrestrial soil and
environment drives the conceptual design of
this package.
The benefit of an autonomous laboratory for
Planetary Science objectives is an exciting
application of engineering and technological
aspects. The needing to investigate the soil in
depth, in conjunction with surface and
atmospheric investigation, leads to the design
of a sample manipulation chain composed by a
two servicing mechanism, at present under
prototyping phase: a 3 D.o.F. robotic arm and a
2 D.o.F. micro mechanism device
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