Finite element modeling of active noise control with optimal placement of multiple actuators

1996 ◽  
Author(s):  
Jae-Wan Kim ◽  
Vasundara V. Varadan ◽  
Vijay K. Varadan
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Noise Control ◽  
Active Noise Control ◽  
Optimal Placement ◽  
Element Modeling ◽  
Active Noise ◽  
Multiple Actuators

scholarly journals Active Noise Control with a Single Nonlinear Control Filter for a Vibrating Plate with Multiple Actuators

2013 ◽  
Vol 38 (4) ◽  
pp. 537-545 ◽  
Author(s):  
Krzysztof Mazur ◽  
Marek Pawełczyk
Keyword(s):  
Nonlinear Control ◽  
Noise Control ◽  
Active Noise Control ◽  
Effective Control ◽  
Destructive Interference ◽  
Linear Filters ◽  
Secondary Sources ◽  
Active Noise ◽  
Vibrating Plates ◽  
Multiple Actuators

Abstract Vibrating plates can be used in Active Noise Control (ANC) applications as active barriers or as secondary sources replacing classical loudspeakers. The system with vibrating plates, especially when nonlinear MFC actuators are used, is nonlinear. The nonlinearity in the system reduces performance of classical feedforward ANC with linear control filters systems, because they cannot cope with harmonics generated by the nonlinearity. The performance of the ANC system can be improved by using nonlinear control filters, such as Artificial Neural Networks or Volterra filters. However, when multiple actuators are mounted on a single plate, which is a common practice to provide effective control of more vibration modes, each actuator should be driven by a dedicated nonlinear control filter. This significantly increases computational complexity of the control algorithm, because adaptation of nonlinear control filters is much more computationally demanding than adaptation of linear FIR filters. This paper presents an ANC system with multiple actuators, which are driven with a single nonlinear filter. To avoid destructive interference of vibrations generated by different actuators the control signal is filtered by appropriate separate linear filters. The control system is experimentally verified and obtained results are reported.

Optimal placement of piezoelectric actuators for active noise control

AIAA Journal ◽  
1997 ◽  
Vol 35 ◽  
pp. 526-533 ◽  
Author(s):  
Vasundara V. Varadan ◽  
Jaehwan Kim ◽  
Vijay K. Varadan
Keyword(s):  
Noise Control ◽  
Active Noise Control ◽  
Piezoelectric Actuators ◽  
Optimal Placement ◽  
Active Noise
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