Title :
Analog VLSI system for active drag reduction
Author :
Gupta, Bhusan ; Goodman, Rodney ; Jiang, Fukang ; Tai, Yu-Chong ; Tung, Steve ; Ho, Chih-Ming
Author_Institution :
Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA, USA
Abstract :
We describe an analog CMOS VLSI system that can process real-time signals from surface-mounted shear stress sensors to detect regions of high shear stress along a surface in an airflow. The outputs of the CMOS circuit are used to actuate micromachined flaps with the goal of reducing this high shear stress on the surface and thereby lowering the total drag. We have designed, fabricated, and tested parts of this system in a wind tunnel in laminar and turbulent flow regimes
Keywords :
CMOS analogue integrated circuits; analogue processing circuits; drag reduction; flow measurement; laminar flow; microsensors; turbulence; wind tunnels; active drag reduction; analog CMOS VLSI system; laminar flow regimes; micromachined flaps; real-time signals; surface-mounted shear stress sensors; turbulent flow regime; CMOS process; CMOS technology; Costs; Fuels; Microscopy; Sea surface; Skin; Stress; Surface-mount technology; Very large scale integration;
Conference_Titel :
Microelectronics for Neural Networks, 1996., Proceedings of Fifth International Conference on
Conference_Location :
Lausanne
Print_ISBN :
0-8186-7373-7
DOI :
10.1109/MNNFS.1996.493771
