Active noise control on a large‐scale ducted fan with inlet wave‐number sensing

2000 ◽  
Vol 107 (5) ◽  
pp. 2800-2801
Author(s):  
Jerome P. Smith ◽  
Ricardo A. Burdisso ◽  
Daniel L. Sutliff ◽  
Laurence J. Heidelberg
Keyword(s):  
Large Scale ◽  
Noise Control ◽  
Active Noise Control ◽  
Wave Number ◽  
Ducted Fan ◽  
Active Noise

scholarly journals A Smart Floating Gate Transistor with Two Control Gates for Active Noise Control

Micromachines ◽  
2019 ◽  
Vol 10 (11) ◽  
pp. 722
Author(s):  
Mao ◽  
Yang ◽  
Ma ◽  
Yan ◽  
Zhang
Keyword(s):  
Large Scale ◽  
Noise Control ◽  
Low Cost ◽  
Active Noise Control ◽  
Complementary Metal Oxide Semiconductor ◽  
Floating Gate ◽  
Oxide Semiconductor ◽  
Cmos Process ◽  
Active Noise ◽  
Floating Gate Transistor

A smart floating gate transistor with two control gates was proposed for active noise control in bioelectrical signal measurement. The device, which is low cost and capable of large-scale integration, was implemented in a standard single-poly complementary metal–oxide–semiconductor (CMOS) process. A model of the device was developed to demonstrate the working principle. Theoretical analysis and simulation results proved the superposition of the two control gates. A series of test experiments were carried out and the results showed that the device was in accordance with the basic electrical characteristics of a floating gate transistor, including the current–voltage (I–V) characteristics and the threshold characteristics observed on the two control gates. Based on the source follower circuit, the experimental results proved that the device can reduce interference by more than 29 dB, which demonstrates the feasibility of the proposed device for active noise control.

A unique ducted fan test bed for active noise control and aeroacoustics research

1996 ◽  
Author(s):  
Laurence Heidelberg ◽  
David Hall ◽  
James Bridges ◽  
M. Nallasamy
Keyword(s):  
Noise Control ◽  
Active Noise Control ◽  
Test Bed ◽  
Ducted Fan ◽  
Active Noise
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