2010 Fiscal Year Final Research Report
Study on selectivity of MOS-type gas sensor based on Prony's method and subspace identification method
| Project/Area Number |
20760284
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Control engineering
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| Research Institution | Kanazawa Institute of Technology |
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Principal Investigator |
TAKEI Yoshinori Kanazawa Institute of Technology, 工学部, 准教授 (30350755)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 制御理論 / システム同定 |
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| Research Abstract |
In this study, feature extraction from a transient response of a semiconductor gas sensor is investigated. For the sensor response given as the step response of the first-order lag system, the sensor output can be approximated as a sum of exponentials by Prony's method. We have shown that the method can be interpreted by the subspace based identification method. The model parameters can be estimated as the time constant and the gain, which are strongly related to characteristics of gases. The parameters can be used to construct the feature vector for the discrimination of gases. Using the estimates as features, it has shown that the discrimination of gases can be improved.
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[Journal Article] Study on selectivity of MOS-type gas sensor using Prony's method2008
Author(s)
TAKEI, Yoshinori, ASADA, Takeshi, ICHIKAWA, Ikuru, NANTO, Hidehito, KOYAMA, Shin, MIHARA, Takashi
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Journal Title
Proc.of The International Conference on Electrical Engineering 2008
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