Active control system for low-frequency road noise combined with an audio system

2001 ◽  
Vol 9 (7) ◽  
pp. 755-763 ◽  
Author(s):  
H. Sano ◽  
T. Inoue ◽  
A. Takahashi ◽  
K. Terai ◽  
Y. Nakamura
Keyword(s):  
Control System ◽  
Active Control ◽  
Low Frequency ◽  
Road Noise ◽  
Active Control System ◽  
Audio System

scholarly journals Development of active control system for low frequency road noise: Solutions for practical use and system configuration.

2001 ◽  
Vol 22 (5) ◽  
pp. 378-379
Author(s):  
Hisashi Sano ◽  
Toshio Inoue ◽  
Akira Takahashi ◽  
Tsuyoshi Yamashita ◽  
Mitsuo Nakamura ◽  
...  
Keyword(s):  
Control System ◽  
Active Control ◽  
Low Frequency ◽  
System Configuration ◽  
Road Noise ◽  
Active Control System

Simulation of Active Noise Control System on the Truck Interior Cab

2013 ◽  
Vol 798-799 ◽  
pp. 443-447
Author(s):  
Qi Chen LU ◽  
Hui Bin LI ◽  
Hua Huang
Keyword(s):  
Control System ◽  
Control Systems ◽  
Active Control ◽  
Noise Control ◽  
Active Noise Control ◽  
Low Frequency ◽  
Frequency Noise ◽  
Simulink Model ◽  
Active Noise ◽  
Active Control System

Studying on adaptive active noise control (AANC) system of the truck interior cab to reduce the low-frequency noise,a normalization FLMS algorithm simulink model is established in Matlab/Simulink.Then taking it as the core,a feedforward adaptive active control system and a feedback adaptive active control system of the tuck interior cab are established in Matlab/Simulink .Considerating the actual error channels effects on systems ,the noise reduction effects of two adaptive active control systems are verified from the simulintion results.Through comparing the two wo adaptive active control systems,we found that the feedforward adaptive active control system is more stable.

Active Feedback Control Systems of Floor Impulse Noise

2003 ◽  
Author(s):  
Sadao Akishita ◽  
Kei Ameyama ◽  
Atsushi Mitani
Keyword(s):  
Control System ◽  
Control Systems ◽  
Active Control ◽  
Impulse Noise ◽  
Concrete Slab ◽  
Mechanical Vibration ◽  
Low Frequency ◽  
Thin Plates ◽  
Bending Vibration ◽  
Active Control System

This paper describes the active control systems for reducing floor impulse noise. The control system is comprised of actively controlled modular thin plates, which wholly cover the surface of concrete slab structure in the ceiling, and in each of which the mechanical vibration is controlled independently with bimorph type piezoelectric actuators. An active control system of modular plate is presented, where five actuators and five sensors are applied to control low frequency modes of bending vibration in the plate. The control system is now under development, main investigation items of whch are designing of vibration characteristics of modular thin plate, the active control system appropriate to the characteristics and cost reduction of the actuators and sensors.

scholarly journals Passat: A Cubesat Student Design Project For Active Control System Development And Verification

2020 ◽  
Author(s):  
Daniel Rooney ◽  
Mathew Roseman ◽  
Charles Shotridge ◽  
Jeffrey Aschenbrenner ◽  
Sanjay Jayaram
Keyword(s):  
Control System ◽  
Active Control ◽  
System Development ◽  
Design Project ◽  
Active Control System

APPLICATION OF ELASTIC DEFORMATIONS TO PARABOLOIDAL SURFACE MAKING

2020 ◽  
Vol 3 ◽  
pp. 11-19
Author(s):  
A.V. NEMENKO ◽  
M.M. NIKITIN
Keyword(s):  
Control System ◽  
Active Control ◽  
Material Removal ◽  
Spherical Surface ◽  
Parabolic Mirror ◽  
Concave Mirror ◽  
Elastic Deformations ◽  
Elastic Bending ◽  
Active Control System ◽  
The Given

The transformation of a spherical concave mirror into a parabolic one with the help of elastic bending deformations is considered. The magnitude and direction of the load, which creates the necessary bend for transforming the mirror with the given parameters, are determined. Uneven material removal during machining is replaced by the bend of an optically accurate spherical surface already obtained. The application of the results to the creation of an active control system for the shaping of the surface of a paraboloid of rotation is considered. The proposed finishing technology is aimed at solving the problem of guaranteed obtaining optically accurate surface of a parabolic mirror.

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