A new feedback approach in active noise control: Robust pole placement control

2021 ◽  
pp. 73-84
Author(s):  
J.C. Carmona ◽  
D. Mazzoni ◽  
P. Schuster
Keyword(s):  
Noise Control ◽  
Active Noise Control ◽  
Pole Placement ◽  
Active Noise ◽  
Pole Placement Control

A Modern Control Approach to Active Noise Control

1993 ◽  
Vol 115 (4) ◽  
pp. 673-678 ◽  
Author(s):  
R. Shoureshi ◽  
L. Brackney ◽  
N. Kubota ◽  
G. Batta
Keyword(s):  
Noise Control ◽  
Dimensional Space ◽  
Active Noise Control ◽  
Adaptive Signal Processing ◽  
Minimum Variance ◽  
Research Literature ◽  
Pole Placement ◽  
Control Approach ◽  
Active Noise ◽  
Modern Control

Active noise control systems currently in use and/or described in the research literature are typically based on adaptive signal processing theory or, equivalently, adaptive feedforward control theory. This paper presents a modern control approach to the problem of active noise cancellation in a three-dimensional space. The controller is designed based on a direct self-tuning regulator. Two forms of adaptive control, namely, pole placement and minimum variance controls are considered and compared in simulation. An implementation of the adaptive minimum variance controller is used to successfully attenuate a harmonic disturbance in a laboratory setting.

Global Active Noise Control of a One-Dimensional Acoustic Duct Using a Feedback Controller

1993 ◽  
Vol 115 (3) ◽  
pp. 488-494 ◽  
Author(s):  
A. J. Hull ◽  
C. J. Radcliffe ◽  
S. C. Southward
Keyword(s):  
Noise Level ◽  
Noise Control ◽  
Acoustic Noise ◽  
Active Noise Control ◽  
Decay Rates ◽  
Pole Placement ◽  
Noise Levels ◽  
One Dimensional ◽  
Active Noise ◽  
System Pressure

Active noise control of acoustic enclosures is a classical engineering problem. The active noise control of a one-dimensional hard-walled duct with a partially dissipative boundary condition is addressed in this paper. Previous techniques have attacked this problem by developing adaptive filters designed to cancel acoustic noise at a single measurement location. The work presented here applies modern, state space, control theory to globally reduce noise levels in a one-dimensional acoustic enclosure rather than at a single location. This global control requires only the addition of a single response measurement microphone and control speaker to the open-loop system. Pressure measurements are taken at the microphone location and passed to an observer, which generates estimates of the system states. Using these state estimates, a pole placement feedback control algorithm is used to lower the noise level. Pole placement reduces noise levels globally by increasing the decay rates of all the controlled acoustic states. Experimental results presented here demonstrate reduction in the noise level at all points in the duct by 58 percent when the system is excited by random amplitude pressure input.

APPLICATION OF ACTIVE NOISE CONTROL TO AN ELEVATOR CABIN

2002 ◽  
Vol 35 (1) ◽  
pp. 67-72 ◽  
Author(s):  
J. Landaluze ◽  
I. Portilla ◽  
N. Cabezón ◽  
A. Martinez ◽  
R. Reyero
Keyword(s):  
Noise Control ◽  
Active Noise Control ◽  
Active Noise
Sign in / Sign up

Export Citation Format

Share Document