The design of a bistable electro-pneumatic interface based on laminar-to-turbulent jet transition is herein presented. This principle, used in the past to produce air stream controlled ﬂuidic turbulence ampliﬁers, is now applied to a new interface driven by acoustic waves and controlled through very low power electrical signals. The study was performed experimentally, attempting to ﬁnd the optimum interface geometry and analysing its sensitivity to acoustic signals in a frequency range from 2 to 20 kHz and at diﬀerent excitation levels. A piezo-electric buzzer was used as sound source, resulting in a device with electric power consumption of less than 5 mW, able to switch common low/high pressure pneumatic valves.
|Titolo:||Acoustically driven turbulence amplifier for pneumatic valves control|
|Data di pubblicazione:||2008|
|Digital Object Identifier (DOI):||10.1016/j.mechatronics.2007.11.002|
|Appare nelle tipologie:||1.1 Articolo in rivista|