학술논문
A piezo-actuated closed loop MEMS system for active delay of transition
Document Type
Conference
Author
Source
TRANSDUCERS 2009 - 2009 International Solid-State Sensors, Actuators and Microsystems Conference Solid-State Sensors, Actuators and Microsystems Conference, 2009. TRANSDUCERS 2009. International. :1533-1536 Jun, 2009
Subject
Language
ISSN
2159-547X
2164-1641
2164-1641
Abstract
This paper presents the design, fabrication and application of a highly integrated closed loop MEMS system for an active control of aerodynamic flow instabilities across airfoils. A special piezo-polymercomposite (PPC) technology was used for the fabrication of powerful piezo-microactuators that were integrated with hotwire flow sensors and a digital control system. This work shows first wind tunnel experiments that prove the principal suitability of the developed device for dampening disturbances in the boundary layer. The local amplitudes of natural disturbances, so called Tollmien-Schlichting (TS) waves, have been reduced by 42%.