Active Noise Control of a One-Dimensional Collocated Acoustic Duct--Using LQG/GA Method
碩士 === 國立中興大學 === 機械工程學系 === 85 === In this thesis, we study the active noise control for an acoustic duct system.Based on Hull''s result,a state space model defined in real state space is first established for the system. Then LQG method is use...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
1997
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| Online Access: | http://ndltd.ncl.edu.tw/handle/27131615975830701351 |
| Summary: | 碩士 === 國立中興大學 === 機械工程學系 === 85 === In this thesis, we study the active noise control for an
acoustic duct system.Based on Hull''s result,a state space model
defined in real state space is first established for the system.
Then LQG method is used to design controllers so that noise in
the duct system can be attenuated. It is found that stabilizing
controllers are easier to be obtained in collocation structure
than in non-collocation one. In collocation LQG design, GA is
further applied to automaticallyadjust design parameters so that
the performance requirement specified in frequency domain can be
achieved. This method is referred to as "LQG/GA". Results of
computer simulation show the effectiveness of system is set up
for experiment. Experimental results also show the feasibility
of the collocated active noise control design.
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