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oai:kumadai.repo.nii.ac.jp:00022983 2023-09-14T06:41:01Z 426:428

M変換を用いる高精度表面計測信号中のインパルス状雑音の除去(機械力学,計測,自動制御) Reduction of Impulsive Noise Included in High-Accuracy Surface Measurement Signal by Using M-Transform Mヘンカン ヲ モチイル コウセイド ヒョウメン ケイソク シンゴウチュウ ノ インパルスジョウ ザツオン ノ ジョキョ キカイ リキガク ケイソク ジドウ セイギョ 原田, 博之 ハラダ, ヒロシ Harada, Hiroshi 原田 ハラダ Harada 博之 ヒロシ Hiroshi 柏木, 濶 カシワギ, ヒロシ Kashiwagi, Hiroshi 柏木 カシワギ Kashiwagi 濶 ヒロシ Hiroshi Ando, Toshiyuki 大渕, 慶史 オオブチ, ヨシフミ Ohbuchi, Yoshifumi 大渕 オオブチ Ohbuchi 慶史 ヨシフミ Yoshifumi Kaba, Kazuki 原田, 博之 柏木, 潤 安藤, 俊之 大渕, 慶史 椛, 一喜 社団法人 日本機械学会 530 Shape Measurement Information Processing and Signal Analysis M-Sequence Correlation Function Nonlinear Filter application/pdf 論文(Article) The authors have recently proposed a new signal processing technique called M-transform. In this paper, we propose to use the M-transform for impulsive noise reduction. Since M-transform of a time signal is equivalent to calculate cross-correlation function between the time signal and M-sequence,both impulsive noise and white noise are converted into small-amplitude random signal through the M-transform. These small-amplitude random signals can be removed by use of some non-linear filter. And then, the filtered signal is transformed into time domain through the inverse M-transform and the noise reduction procedure is completed. The proposed filtering technique is applied to reduce impulsive noise included in surface tracing signal measured by an atomic force microscope. From the results of the experiment, it is shown that the proposed works quite well for impulsive noise reduction. http://ci.nii.ac.jp/naid/110006264559@@@http://www.jsme.or.jp 社団法人 日本機械学会 2005-02-25 jpn journal article VoR http://hdl.handle.net/2298/13035 https://kumadai.repo.nii.ac.jp/records/22983 03875024 AN00187463 日本機械学會論文集. C編 71 702 513 518 https://kumadai.repo.nii.ac.jp/record/22983/files/110006264559.pdf application/pdf 525.1 kB 2020-03-02