Dissertation > 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

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
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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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