scholarly journals Desenvolvimento de uma plataforma experimental de baixo custo para implementação de controle ativo de ruído em dutos acústicos / Development of a low-cost experimental platform for implementing active noise control in acoustic ducts

2020 ◽  
Vol 4 (6) ◽  
pp. 3752-3771
Author(s):  
Renato Vilela Lopes ◽  
Maria Alzira de Araújo Nunes ◽  
André Murilo ◽  
Matheus Pereira Santana ◽  
Daniel Carvalho de Sousa ◽  
...  
Keyword(s):  
Noise Control ◽  
Low Cost ◽  
Active Noise Control ◽  
Experimental Platform ◽  
Active Noise ◽  
Acoustic Ducts

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.

Experimental Study on an Active Noise Control System for Turboprop Driven Aircraft

2013 ◽  
Vol 333-335 ◽  
pp. 2142-2145
Author(s):  
Qing Fu Kong ◽  
Yu Liang Dai ◽  
Shi Jian Zhu ◽  
Jia Ming Wu
Keyword(s):  
Experimental Study ◽  
Control System ◽  
Sound Source ◽  
Noise Control ◽  
Active Noise Control ◽  
Low Frequency ◽  
Frequency Noise ◽  
Low Frequency Noise ◽  
Experimental Platform ◽  
Active Noise

In order to find a solution to the control of low frequency noise in the cabin of turboprop driven aircraft, an experimental active noise control (ANC) system is introduced in the paper, which consists of vibroacoustic field analogue subsystem, acoustic field measurement subsystem and acoustic barrier exciter subsystem. Effects of both different spaces between the primary sound source and secondary sound source of the ANC system and different frequency noises on noise-reduction result are investigated based on the experimental platform. Results of the experiment show a significant potential of the ANC method for the control of low frequency noise in the cabin of turboprop driven aircraft.

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