Internal-model Based LQG/Hinf Design of Active Noise Controllers for A One Dimensional Acoustic Duct System
碩士 === 國立中興大學 === 機械工程學系 === 86 === In this thesis, we study active noise control for a one- dimensional acoustic duct system. A real-state-space model of an acoustic duct system developed in [24] is used to design active noise controllers and do computer...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
1998
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| Online Access: | http://ndltd.ncl.edu.tw/handle/30046910325572740487 |
| Summary: | 碩士 === 國立中興大學 === 機械工程學系 === 86 === In this thesis, we study active noise control for a one-
dimensional acoustic duct system. A real-state-space model of an
acoustic duct system developed in [24] is used to design active
noise controllers and do computer simulation. A design method of
linear quadratic gaussian control with a performance bound
incorporating with an internal model principle (LQG/Hinf+IM) is
developed to design active noise controller to generate
repetitive control signal so that noise of specific (target)
frequency in the acoustic duct can be attenuated. Computer
simulation shows that the designed LQG/Hinf+IM controller can
achieve perfect noise rejection at the target frequency and can
acquire the desired robustness property of tolerating the
uncertainty in the target frequency. Experimental results also
demonstrate the robust control performance and indicate the
feasibility of the proposed designed method.
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