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Adaptive Inverse Control Research and Its Application in Active Noise Control

Author: ZhaoBin
Tutor: QiZhanQing
School: Yanshan University
Course: Control Theory and Control Engineering
Keywords: Adaptive Inverse Control Adaptive disturbance canceller LMS algorithm IIR filter Adaptive active noise control
CLC: TP273.2
Type: Master's thesis
Year: 2003
Downloads: 306
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Abstract


The studied adaptive algorithm and adaptive inverse control structure , to improve the original adaptive inverse control , propose a new adaptive inverse control method , to improve the tracking performance and convergence rate of the system . Adaptive inverse control in active noise control applications , for its characteristics , a new noise control strategy . First in the classical adaptive inverse control theory based on the introduction of a fuzzy approach , to achieve a convergence process of time-varying control . Fuzzy control the improved adaptive inverse control system , the performance of the LMS algorithm , to solve the contradiction between convergence rate of constant step size factor and offset amount . Secondly, the adaptive IIR filter controller adaptive inverse control method . Given a U- filtering LMS algorithm adaptive inverse control structure . This makes the amount of calculation of the adaptive algorithm to obtain a significant reduction , while improving the adjustment accuracy , and for the output of the reference model having a very good tracking performance . This structure has a practical application , and to broaden the application areas of adaptive inverse control . Finally, the construction of adaptive inverse control method based on the U- filtering LMS algorithm applied to the active noise control . Traditional active noise control performance compared to prove the superiority of the adaptive inverse control . In addition , the characteristics of active noise control , mainly derived a separable controller adaptive algorithm . Adaptive inverse control structure with separate controller , and use matlab simulation noise reduction satisfactory .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Automatic control,automatic control system > Adaptive ( self- tuning ) control,adaptive control ( self-tuning ) system
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