Application of Damped-Oscillation Control Signals for Wide-Band Feedback Active Noise Control in Acoustic Ducts

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概要

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• Multi-damped-oscillation control signals are applied in this study for active noise control (ANC) in an acoustic duct. Feedback active noise controllers that can generate damped-oscillation control signals are designed by using an internal model-based linear quadratic Gaussian (LQG) design technique. The low and upper bounds containing a desired ANC bandwidth is specified by two frequencies of the control signals. To acquire desired ANC performance, sound pressure attenuation ratios within the bandwidth are tuned by control signals of other frequencies and damping ratios. Computer simulation and experimental results show that sound pressure attenuation ratio of ≤0.3 and ≥0.5, respectively, can be achieved in a wide-band of 100 Hz by using 3 damped-oscillation control signals. Experimental results also show effective noise reduction for time varying disturbance and band-limited white noise within the ANC bandwidth. These results support the feasibility of the designed controllers with damped-oscillation control signals for wide-band feedback active noise control in acoustic ducts.

• 一般社団法人日本機械学会の論文
• 2003-03-15

著者

• Lin Jong-yih

  Department Of Mechanical Engineering National Chung-hsing University

• Lin Jong-yih

  Department Of Mechanical Engineering National Chung Hsing University

• Ke Jauh-hurng

  Department Of Mechanical Engineering National Chung-hsing University

関連論文

• Identification of Acoustic Impedance Using a Simple Genetic Algorithm
• Combined Feedback Design of Active Noise Control and Face Velocity Control Based on a Novel Secondary-Path Model of Speaker-Duct Systems
• Active Noise Reduction in Ducts of Actuating Dynamics Using Two Periodic Control Signals
• Application of Damped-Oscillation Control Signals for Wide-Band Feedback Active Noise Control in Acoustic Ducts

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