\u30d0\u30f3\u30c9\u30a8\u30cd\u30eb\u30ae\u30fc\u3068\u306f\u3001\u4fe1\u53f7\u306b\u542b\u307e\u308c\u308b\u300c\u7279\u5b9a\u306e\u5468\u6ce2\u6570\u5e2f\u300d\u306b\u3069\u308c\u3060\u3051\u306e\u5f37\u3055\uff08\u30d1\u30ef\u30fc\uff09\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u304b\u3092\u6570\u5024\u5316\u3059\u308b\u6307\u6a19\u3067\u3042\u308b\u3002\u76f4\u611f\u7684\u306b\u306f\u3001\u5468\u6ce2\u6570\u306e\u7269\u5dee\u3057\u3067\u4fe1\u53f7\u3092\u773a\u3081\u3001\u95a2\u5fc3\u306e\u3042\u308b\u5e2f\u57df\u306e\u6210\u5206\u3060\u3051\u3092\u96c6\u3081\u3066\u5408\u8a08\uff08\u7a4d\u5206\uff09\u3059\u308b\u64cd\u4f5c\u3067\u3001\u6642\u9593\u6ce2\u5f62\u3067\u306f\u898b\u843d\u3068\u3057\u3084\u3059\u3044\u5909\u5316\u3092\u5e2f\u57df\u3054\u3068\u306e\u6570\u3067\u5b89\u5b9a\u306b\u8868\u305b\u308b\u306e\u304c\u5f37\u307f\u3067\u3042\u308b\u3002\u8a08\u7b97\u306e\u57fa\u790e\u306f\u30d1\u30ef\u30fc\u30b9\u30da\u30af\u30c8\u30eb\u5bc6\u5ea6\uff08PSD\uff09\u3067\u3001PSD\u306f\u300c1Hz\u3042\u305f\u308a\u306e\u30d1\u30ef\u30fc\u300d\u3092\u8868\u3059\u305f\u3081\u3001\u3042\u308b\u5e2f\u57df\u306e\u30d0\u30f3\u30c9\u30a8\u30cd\u30eb\u30ae\u30fc\u306f\u3001\u305d\u306e\u5e2f\u57df\u3067PSD\u3092\u5468\u6ce2\u6570\u7a4d\u5206\uff08\u96e2\u6563\u30c7\u30fc\u30bf\u3067\u306f\u548c\uff09\u3059\u308b\u3053\u3068\u3067\u6c42\u3081\u3089\u308c\u308b\u3002[1][2][3]\n\n\n\n
\u307e\u305a\u3001\u30d0\u30f3\u30c9\u30a8\u30cd\u30eb\u30ae\u30fc\u306e\u610f\u5473\u3068\u5229\u70b9\u3092\u6574\u7406\u3059\u308b\u3002- \u610f\u5473: \u6307\u5b9a\u3057\u305f\u5468\u6ce2\u6570\u7bc4\u56f2\u306b\u542b\u307e\u308c\u308b\u30d1\u30ef\u30fc\u306e\u7dcf\u91cf\uff08RMS2\u306b\u5bfe\u5fdc\uff09\u3067\u3001\u5e2f\u57df\u3054\u3068\u306e\u5f37\u5f31\u3092\u5b9a\u91cf\u5316\u3059\u308b\u3002- \u5229\u70b9: \u6642\u9593\u9577\u3084FFT\u30b5\u30a4\u30ba\u304c\u7570\u306a\u308b\u30c7\u30fc\u30bf\u3067\u3082\u3001PSD\u306b\u6b63\u3057\u304f\u6b63\u898f\u5316\u3057\u3066\u304b\u3089\u5e2f\u57df\u7a4d\u5206\u3059\u308c\u3070\u6bd4\u8f03\u304c\u3057\u3084\u3059\u3044\uff08\u5e2f\u57df\u5e45\u306b\u4f9d\u5b58\u3057\u306a\u3044\u6307\u6a19\u306b\u3067\u304d\u308b\uff09\u3002- \u5fdc\u7528: \u6b63\u5e38\u6642\u3068\u7570\u5e38\u6642\u3067\u5897\u3048\u308b\u5e2f\u57df\u3092\u8ffd\u8de1\u3059\u308b\u3001\u56de\u8ee2\u57fa\u672c\u5468\u6ce2\u6570\u307e\u308f\u308a\u306e\u5074\u5e2f\u57df\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u6bd4\u8f03\u3059\u308b\u3001\u7279\u5b9a\u6a5f\u69cb\uff08\u6b6f\u8eca\u565b\u5408\u3001\u8ef8\u53d7\u9ad8\u5468\u6ce2\uff09\u306e\u76e3\u8996\u3001\u3068\u3044\u3063\u305f\u7528\u9014\u306b\u76f4\u7d50\u3059\u308b\u3002[4][2][3][5][6]\n\n\n\n
\u6b21\u306b\u3001\u8a08\u7b97\u624b\u9806\u3092\u6bb5\u968e\u7684\u306b\u8ff0\u3079\u308b\u30021) PSD\u306e\u63a8\u5b9a: \u5b9f\u52d9\u3067\u306f\u5206\u6563\u3092\u4e0b\u3052\u308b\u305f\u3081Welch\u6cd5\u304c\u5e83\u304f\u4f7f\u308f\u308c\u308b\u3002\u4fe1\u53f7\u3092\u91cd\u306a\u308a\u5408\u3046\u533a\u9593\u306b\u5206\u5272\u3057\u3001\u5404\u533a\u9593\u306e\u4e8c\u4e57\u30b9\u30da\u30af\u30c8\u30eb\uff08\u30d4\u30ea\u30aa\u30c9\u30b0\u30e9\u30e0\uff09\u3092\u5e73\u5747\u3057\u3066PSD\u3092\u5f97\u308b\u65b9\u6cd5\u3067\u3001\u30ce\u30a4\u30ba\u5e8a\u306e\u5b89\u5b9a\u5316\u306b\u6709\u52b9\u3067\u3042\u308b\u30022) \u5468\u6ce2\u6570\u8ef8\u3068\u5358\u4f4d: PSD\u306fV2\/Hz\u3084(m\/s2)2\/Hz\u306a\u3069\u306e\u5bc6\u5ea6\u5358\u4f4d\u3067\u8868\u3059\uff08\u89b3\u6e2c\u91cf\u306b\u4f9d\u5b58\uff09\u3002\u3053\u306e\u6b63\u898f\u5316\u306b\u3088\u308a\u3001\u5206\u89e3\u80fd\u3084\u7a93\u9577\u306e\u9055\u3044\u3092\u8d85\u3048\u3066\u6bd4\u8f03\u3067\u304d\u308b\u30023) \u7a93\u95a2\u6570\u3068\u88dc\u6b63: \u7a93\u3092\u304b\u3051\u308b\u3068\u5468\u6ce2\u6570\u5206\u5e03\u304c\u5e83\u304c\u308b\u305f\u3081\u3001\u6b63\u3057\u3044PSD\u3078\u306f\u7b49\u4fa1\u96d1\u97f3\u5e2f\u57df\u5e45\uff08ENBW\uff09\u3067\u306e\u88dc\u6b63\u304c\u5fc5\u8981\u306b\u306a\u308b\u3002ENBW\u306f\u300c\u540c\u3058\u30d1\u30ef\u30fc\u3092\u901a\u3059\u7406\u60f3\u77e9\u5f62\u30d5\u30a3\u30eb\u30bf\u306e\u5e45\u300d\u3068\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u3001\u30d1\u30ef\u30fc\u30b9\u30da\u30af\u30c8\u30eb\u3092ENBW\u3067\u5272\u308b\u3053\u3068\u3067\u5bc6\u5ea6\u306b\u6b63\u898f\u5316\u3059\u308b\u30024) \u30d0\u30f3\u30c9\u7a4d\u5206: \u95a2\u5fc3\u5e2f\u57df[f1,f2]\u306ePSD\u3092\u5468\u6ce2\u6570\u3067\u7a4d\u5206\uff08\u96e2\u6563\u3067\u306f\u03a3PSD[k]\u00b7\u0394f\uff09\u3059\u308b\u3068\u3001\u305d\u306e\u5e2f\u57df\u306e\u5e73\u5747\u30d1\u30ef\u30fc\uff08RMS2\uff09\u304c\u5f97\u3089\u308c\u308b\u3002\u8907\u6570\u5e2f\u57df\u306b\u3064\u3044\u3066\u540c\u69d8\u306b\u6c42\u3081\u308c\u3070\u3001\u300c\u4f4e\u57df\/\u4e2d\u57df\/\u9ad8\u57df\u300d\u306e\u5e2f\u57df\u5225\u30a8\u30cd\u30eb\u30ae\u30fc\u304c\u4e26\u3076\u30025) \u30d0\u30f3\u30c9\u6bd4\/\u7279\u5fb4\u91cf\u5316: \u7dcf\u30a8\u30cd\u30eb\u30ae\u30fc\u306b\u5bfe\u3059\u308b\u30d0\u30f3\u30c9\u6bd4\u3001\u8907\u6570\u30d0\u30f3\u30c9\u306e\u5dee\u3084\u6bd4\u3001\u79fb\u52d5\u7a93\u3067\u306e\u30c8\u30ec\u30f3\u30c9\u306a\u3069\u306b\u6d3e\u751f\u3055\u305b\u308b\u3068\u3001\u904b\u8ee2\u72b6\u614b\u306e\u5909\u5316\u3084\u7570\u5e38\u5146\u5019\u3092\u9811\u5065\u306b\u53ef\u8996\u5316\u3067\u304d\u308b\u3002[7][8][9][2][3][10][5][6][11][12]\n\n\n\n
\u8a08\u7b97\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u3044\u304f\u3064\u304b\u8a73\u8ff0\u3059\u308b\u3002- Welch\u6cd5\u306e\u8a2d\u8a08: \u533a\u9593\u9577\uff08\u7a93\u9577\uff09\u306f\u5468\u6ce2\u6570\u5206\u89e3\u80fd\u306b\u76f4\u7d50\u3057\u3001\u9577\u3044\u307b\u3069\u7d30\u304b\u304f\uff08df\u2248fs\/N\uff09\u3001\u77ed\u3044\u307b\u3069\u6642\u9593\u5909\u5316\u306b\u654f\u611f\u306b\u306a\u308b\u3002\u30aa\u30fc\u30d0\u30fc\u30e9\u30c3\u30d7\u3068\u7a93\u7a2e\uff08\u30cf\u30f3\/\u30cf\u30df\u30f3\u30b0\u7b49\uff09\u3092\u9069\u5207\u306b\u9078\u3076\u3068\u3001PSD\u306e\u3070\u3089\u3064\u304d\u304c\u6e1b\u308b\u3002- ENBW\u88dc\u6b63\u306e\u610f\u7fa9: \u540c\u3058\u539f\u4fe1\u53f7\u3067\u3082\u7a93\u7a2e\u30fb\u5206\u89e3\u80fd\u304c\u5909\u308f\u308b\u3068\u3001\u672a\u88dc\u6b63\u306e\u30d1\u30ef\u30fc\u30b9\u30da\u30af\u30c8\u30eb\u306e\u76ee\u76db\u306f\u5909\u52d5\u3059\u308b\u3002ENBW\u3092\u7528\u3044\u305fPSD\u6b63\u898f\u5316\u306b\u3088\u308a\u30011Hz\u5f53\u305f\u308a\u306e\u30d1\u30ef\u30fc\u3068\u3057\u3066\u6bd4\u8f03\u53ef\u80fd\u306a\u30b9\u30b1\u30fc\u30eb\u306b\u7d71\u4e00\u3067\u304d\u308b\u3002- \u7dcf\u30d1\u30ef\u30fc\u3068\u306e\u6574\u5408: PSD\u3092\u5168\u5e2f\u57df\u3067\u7a4d\u5206\u3059\u308b\u3068\u6642\u9593\u9818\u57df\u306e\u5e73\u5747\u4e8c\u4e57\u5024\uff08RMS2\uff09\u306b\u4e00\u81f4\u3059\u308b\uff08Parseval\u6574\u5408\uff09\u3002\u7279\u5b9a\u30d0\u30f3\u30c9\u306e\u7a4d\u5206\u306f\u3001\u305d\u306e\u5e2f\u57df\u304c\u62c5\u3046\u30a8\u30cd\u30eb\u30ae\u30fc\u5bc4\u4e0e\u3092\u610f\u5473\u3059\u308b\u3002- \u30ce\u30a4\u30ba\u5e8a\u3068\u3057\u304d\u3044\u5024: \u5b9f\u30c7\u30fc\u30bf\u3067\u306fPSD\u306e\u30ce\u30a4\u30ba\u5e8a\u304c\u5e2f\u57df\u3067\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308b\u3002\u30d0\u30f3\u30c9\u30a8\u30cd\u30eb\u30ae\u30fc\u306e\u89e3\u91c8\u3067\u306f\u3001\u30ce\u30a4\u30ba\u5e8a\u306e\u63a8\u5b9a\uff08\u4f8b\u3048\u3070\u9a12\u97f3\u5e2f\u57df\u306e\u4e2d\u592e\u5024\uff09\u3068\u5dee\u5206\u30fb\u6bd4\u7387\u3092\u3068\u308b\u8a2d\u8a08\u304c\u8aa4\u8b66\u5831\u4f4e\u6e1b\u306b\u6709\u52b9\u3067\u3042\u308b\u3002[8][13][9][2][3][11][7]\n\n\n\n
\u6545\u969c\u4e88\u77e5\u3067\u306e\u4f7f\u3044\u65b9\u306f\u660e\u5feb\u3060\u30021) \u7269\u7406\u77e5\u898b\u306b\u57fa\u3065\u304f\u5e2f\u57df\u8a2d\u8a08: \u56de\u8ee2\u57fa\u672c\u5468\u6ce2\u6570\u3068\u9ad8\u8abf\u6ce2\u3001\u565b\u5408\u5468\u6ce2\u6570\u3001\u8ef8\u53d7\u306e\u9ad8\u5468\u6ce2\u52b1\u8d77\u5e2f\uff08\u30a8\u30f3\u30d9\u30ed\u30fc\u30d7\u5bfe\u8c61\u306e\u524d\u6bb5\u9ad8\u57df\uff09\u306a\u3069\u3001\u539f\u56e0\u306b\u5bfe\u5fdc\u3057\u305f\u5e2f\u57df\u3092\u5b9a\u7fa9\u3059\u308b\u30022) \u5e2f\u57dfRMS\u306e\u30c8\u30ec\u30f3\u30c9: \u540c\u6761\u4ef6\u306e\u30c7\u30fc\u30bf\u3092\u6642\u7cfb\u5217\u306b\u4e26\u3079\u3001\u5404\u30d0\u30f3\u30c9\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u30c8\u30ec\u30f3\u30c9\u5316\u3059\u308b\u3068\u3001\u521d\u671f\u6469\u8017\u3084\u6f64\u6ed1\u4f4e\u4e0b\u306a\u3069\u306e\u7de9\u3084\u304b\u306a\u5897\u5927\u304c\u898b\u3048\u3084\u3059\u3044\u30023) \u5e2f\u57df\u6bd4\u3067\u74b0\u5883\u5dee\u3092\u30ad\u30e3\u30f3\u30bb\u30eb: \u5168\u4f53\u30ec\u30d9\u30eb\u304c\u5909\u52d5\u3057\u3066\u3082\u3001\u95a2\u5fc3\u5e2f\u57df\/\u53c2\u7167\u5e2f\u57df\u306e\u6bd4\u3092\u7528\u3044\u308c\u3070\u3001\u74b0\u5883\u97f3\u3084\u8ca0\u8377\u5909\u52d5\u306b\u5bfe\u3057\u3066\u9811\u5065\u306b\u306a\u308b\u30024) \u5074\u5e2f\u57df\u306e\u548c\/\u5dee: \u6b6f\u8eca\u3084\u8ef8\u53d7\u306e\u5909\u8abf\u3067\u306f\u3001\u57fa\u6e96\u7dda\uff08\u57fa\u672c\u3084\u30e1\u30c3\u30b7\u30e5\uff09\u306e\u5de6\u53f3\u5074\u5e2f\u57df\u30a8\u30cd\u30eb\u30ae\u30fc\u306e\u7dcf\u548c\u3084\u4e0d\u5747\u8861\u304c\u6709\u7528\u306a\u5224\u5225\u5b50\u306b\u306a\u308b\u3002[5][6][4]\n\n\n\n
\u5b9f\u88c5\u4e0a\u306e\u6ce8\u610f\u70b9\u3092\u6319\u3052\u308b\u3002- \u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3068\u4e0a\u9650: \u8868\u793a\u30fb\u89e3\u6790\u53ef\u80fd\u306a\u4e0a\u9650\u306f\u30ca\u30a4\u30ad\u30b9\u30c8\uff08fs\/2\uff09\u307e\u3067\u3002\u76e3\u8996\u3057\u305f\u3044\u5e2f\u57df\u304c\u5341\u5206\u306b\u30ab\u30d0\u30fc\u3055\u308c\u308b\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u6761\u4ef6\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3002- \u5206\u89e3\u80fd\u3068\u5e2f\u57df\u5883\u754c: \u7a4d\u5206\u306e\u96e2\u6563\u5316\u8aa4\u5dee\u3092\u6291\u3048\u308b\u306b\u306f\u3001\u30d0\u30f3\u30c9\u5883\u754c\u304c\u5468\u6ce2\u6570\u30d3\u30f3\u306b\u3067\u304d\u308b\u3060\u3051\u6574\u5408\u3059\u308b\u3088\u3046FFT\u8a2d\u8a08\uff08N\u306e\u9078\u5b9a\u3084\u30bc\u30ed\u30d1\u30c7\u30a3\u30f3\u30b0\u3067\u523b\u307f\u306e\u8aad\u307f\u3084\u3059\u3055\u3092\u6539\u5584\uff09\u3092\u884c\u3046\u3002\u305f\u3060\u3057\u30bc\u30ed\u30d1\u30c7\u30a3\u30f3\u30b0\u306f\u523b\u307f\u3092\u7d30\u304b\u304f\u898b\u305b\u308b\u3060\u3051\u3067\u771f\u306e\u5206\u89e3\u80fd\u306f\u4e0a\u304c\u3089\u306a\u3044\u70b9\u306b\u6ce8\u610f\u3002- \u7a93\u88dc\u6b63\u306e\u4e00\u8cab\u6027: \u7570\u306a\u308b\u7a93\u30fb\u8a2d\u5b9a\u3067\u5f97\u305fPSD\u3092\u6bd4\u8f03\u3059\u308b\u969b\u306f\u3001ENBW\/\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u306e\u7d71\u4e00\u304c\u5fc5\u9808\u3002\u6e2c\u5b9a\u5668\u30fb\u30bd\u30d5\u30c8\u306ePSD\u5b9a\u7fa9\uff08\u7247\u5074\/\u4e21\u5074\u3001rms\/peak\uff09\u3082\u4f75\u305b\u3066\u78ba\u8a8d\u3059\u308b\u3002- Welch\u5206\u6563\u4f4e\u6e1b\u3068\u81ea\u7531\u5ea6: Welch\u5e73\u5747\u306f\u5206\u6563\u3092\u4e0b\u3052\u308b\u304c\u3001\u72ec\u7acb\u533a\u9593\u306e\u6570\uff08\u81ea\u7531\u5ea6\uff09\u306b\u4f9d\u5b58\u3057\u3066\u3070\u3089\u3064\u304d\u304c\u6b8b\u308b\u3002\u533a\u9593\u8a2d\u8a08\u3068\u5e73\u5747\u56de\u6570\u3067\u5b89\u5b9a\u5ea6\u3092\u62c5\u4fdd\u3059\u308b\u3002[2][3][10][11][12][7]\n\n\n\n
\u95a2\u9023\u3059\u308b\u767a\u5c55\u4f8b\u3082\u89e6\u308c\u308b\u3002- \u30d0\u30f3\u30c9\u30d1\u30b9\u691c\u51fa\u3068\u306e\u95a2\u4fc2: \u53e4\u5178\u7684\u306b\u306f\u300c\u5e2f\u57df\u901a\u904e\u2192\u81ea\u4e57\u2192\u5e73\u5747\u300d\u3067\u5e2f\u57df\u30d1\u30ef\u30fc\uff08PSD\u76f8\u5f53\uff09\u3092\u63a8\u5b9a\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308a\u3001Welch\u6cd5\u3068\u306e\u95a2\u4fc2\u304c\u6574\u7406\u3055\u308c\u3066\u3044\u308b\u3002\u5468\u6ce2\u6570\u9818\u57df\u306e\u7a4d\u5206\u3068\u540c\u5024\u3067\u3042\u308b\u3002- \u6700\u9069\u5e2f\u57df\u306e\u63a2\u7d22: \u8ef8\u53d7\u306a\u3069\u3067\u306f\u3001\u6545\u969c\u7279\u6709\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u304c\u96c6\u4e2d\u3059\u308b\u6700\u9069\u5e2f\u57df\u3092\u30c7\u30fc\u30bf\u99c6\u52d5\u3067\u63a2\u7d22\u3057\u3001\u5f53\u8a72\u5e2f\u57df\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u7279\u5fb4\u5316\u3059\u308b\u7814\u7a76\u304c\u3042\u308b\uff08\u77ed\u6642\u9593\u51e6\u7406\u3084\u30a8\u30cd\u30eb\u30ae\u30fc\u6307\u6a19\u306b\u3088\u308b\u5f37\u8abf\uff09\u3002- \u6ce2\u5f62\u9577\u5dee\u306e\u6bd4\u8f03: PSD\u30d9\u30fc\u30b9\u306e\u30d0\u30f3\u30c9\u7a4d\u5206\u306f\u3001\u6642\u9593\u9577\u306e\u7570\u306a\u308b\u8a18\u9332\u3067\u3082\u5bc6\u5ea6\u57fa\u6e96\u3086\u3048\u306b\u6bd4\u8f03\u3057\u3084\u3059\u304f\u3001\u8a55\u4fa1\u306e\u516c\u5e73\u6027\u3092\u4fdd\u3066\u308b\u3002[3][7][4][2]\n\n\n\n
\u6700\u5f8c\u306b\u3001\u73fe\u5834\u5c0e\u5165\u306e\u624b\u9806\u3092\u307e\u3068\u3081\u308b\u30021) \u7269\u7406\u77e5\u898b\u3068\u4ed5\u69d8\u304b\u3089\u76e3\u8996\u5e2f\u57df\u3092\u5b9a\u7fa9\uff08\u4f8b: \u57fa\u672c\u5468\u6ce2\u6570\u00b1\u0394\u3001\u565b\u5408\u5468\u6ce2\u6570\u5e2f\u3001\u9ad8\u5468\u6ce2\u30a4\u30f3\u30d1\u30af\u30c8\u5e2f\uff09\u30022) Welch\u6cd5\u3067PSD\u3092\u63a8\u5b9a\uff08\u7a93\u9577\u30fb\u30aa\u30fc\u30d0\u30fc\u30e9\u30c3\u30d7\u30fb\u7a93\u7a2e\u3092\u8a2d\u8a08\uff09\u30023) ENBW\u7b49\u306e\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u3092\u78ba\u8a8d\u3057\u3001\u5bc6\u5ea6\u5358\u4f4d\u3067\u6b63\u898f\u5316\u30024) \u6307\u5b9a\u5e2f\u57df\u3067PSD\u3092\u7a4d\u5206\u3057\u3066\u30d0\u30f3\u30c9\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u7b97\u51fa\u3001\u6642\u7cfb\u5217\u306b\u4e26\u3079\u3066\u57fa\u6e96\u3068\u6bd4\u8f03\u30025) \u7dcf\u30a8\u30cd\u30eb\u30ae\u30fc\u6bd4\u30fb\u5074\u5e2f\u57df\u548c\u30fb\u53c2\u7167\u5e2f\u57df\u6bd4\u306a\u3069\u306e\u6d3e\u751f\u7279\u5fb4\u3092\u52a0\u3048\u3001\u95be\u5024\u3084\u5b66\u7fd2\u5668\u3067\u5224\u5225\u3092\u8a2d\u8a08\u30026) \u8a55\u4fa1\u3067\u306f\u540c\u4e00\u6761\u4ef6\u30fb\u540c\u4e00\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u3067\u6bd4\u8f03\u3057\u3001\u5e2f\u57df\u5b9a\u7fa9\u3084\u7a93\u8a2d\u5b9a\u306e\u611f\u5ea6\u5206\u6790\u3092\u5b9f\u65bd\u3059\u308b\u3002[9][10][6][11][7][8][2][3][5]\n\n\n\n[1] https:\/\/en.wikipedia.org\/wiki\/Spectral_density<\/p>\n\n\n\n[2] https:\/\/vibrationresearch.com\/blog\/fft-psd-difference\/<\/p>\n\n\n\n[3] https:\/\/holometer.fnal.gov\/GH_FFT.pdf<\/p>\n\n\n\n[4] https:\/\/www.extrica.com\/article\/22198\/pdf<\/p>\n\n\n\n[5] https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0263224114001742<\/p>\n\n\n\n[6] https:\/\/pubs.aip.org\/aip\/adv\/article\/14\/2\/025131\/3265734\/Fault-feature-extraction-and-diagnosis-method-for<\/p>\n\n\n\n[7] https:\/\/www.osti.gov\/servlets\/purl\/5688766<\/p>\n\n\n\n[8] https:\/\/sensors.myu-group.co.jp\/sm_pdf\/SM3271.pdf<\/p>\n\n\n\n[9] https:\/\/www.highfrequencyelectronics.com\/index.php?option=com_content&view=article&id=553%3Areceiver-sensitivity-and-equivalent-noise-bandwidth&catid=94%3A2014-06-june-articles&Itemid=189<\/p>\n\n\n\n[10] https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC7662261\/<\/p>\n\n\n\n[11] https:\/\/www.ap.com\/blog\/fft-spectrum-and-spectral-densities-same-data-different-scaling<\/p>\n\n\n\n[12] https:\/\/infosys.beckhoff.com\/content\/1033\/tf3600_tc3_condition_monitoring\/2803646091.html<\/p>\n\n\n\n[13] https:\/\/www.sciencedirect.com\/org\/science\/article\/pii\/S152614922000168X<\/p>\n\n\n\n[14] https:\/\/www.numberanalytics.com\/blog\/welch-method-for-power-spectral-density-analysis<\/p>\n\n\n\n[15] https:\/\/ieeexplore.ieee.org\/document\/9846229\/<\/p>\n\n\n\n[16] https:\/\/ntrs.nasa.gov\/api\/citations\/19660001034\/downloads\/19660001034.pdf<\/p>\n\n\n\n[17] https:\/\/www.spiedigitallibrary.org\/conference-proceedings-of-spie\/13441\/134410A\/Research-and-optimization-of-feature-extraction-algorithms-based-on-bearing\/10.1117\/12.3049948.full<\/p>\n\n\n\n[18] https:\/\/www.mathworks.com\/matlabcentral\/answers\/874053-pspectrum-power-spectrum-or-power-density-scaling<\/p>\n\n\n\n
\u203b\u672c\u30da\u30fc\u30b8\u306f\u3001AI\u306e\u6d3b\u7528\u3084\u7814\u7a76\u306b\u95a2\u9023\u3059\u308b\u539f\u7406\u30fb\u6a5f\u5668\u30fb\u30c7\u30d0\u30a4\u30b9\u306b\u3064\u3044\u3066\u5b66\u3076\u305f\u3081\u306b\u3001\u500b\u4eba\u7684\u306b\u6574\u7406\u30fb\u8a18\u8ff0\u3057\u3066\u3044\u308b\u3082\u306e\u3067\u3059\u3002\u5185\u5bb9\u306b\u306f\u8aa4\u308a\u3084\u898b\u843d\u3068\u3057\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u3082\u3057\u304a\u6c17\u3065\u304d\u306e\u70b9\u3084\u3054\u52a9\u8a00\u7b49\u3054\u3056\u3044\u307e\u3057\u305f\u3089\u3001\u3054\u9023\u7d61\u3044\u305f\u3060\u3051\u307e\u3059\u3068\u5e78\u3044\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n \u203b\u672c\u30da\u30fc\u30b8\u306e\u5185\u5bb9\u306f\u3001\u500b\u4eba\u7684\u306a\u5b66\u7fd2\u304a\u3088\u3073\u60c5\u5831\u6574\u7406\u3092\u76ee\u7684\u3068\u3057\u3066\u63d0\u4f9b\u3057\u3066\u3044\u308b\u3082\u306e\u3067\u3042\u308a\u3001\u305d\u306e\u6b63\u78ba\u6027\u3001\u5b8c\u5168\u6027\u3001\u6709\u7528\u6027\u7b49\u306b\u3064\u3044\u3066\u3044\u304b\u306a\u308b\u4fdd\u8a3c\u3082\u884c\u3044\u307e\u305b\u3093\u3002\u672c\u30da\u30fc\u30b8\u306e\u60c5\u5831\u3092\u5229\u7528\u3057\u305f\u3053\u3068\u3001\u307e\u305f\u306f\u5229\u7528\u3067\u304d\u306a\u304b\u3063\u305f\u3053\u3068\u306b\u3088\u3063\u3066\u767a\u751f\u3057\u305f\u640d\u5bb3\uff08\u76f4\u63a5\u7684\u30fb\u9593\u63a5\u7684\u30fb\u7279\u5225\u30fb\u5076\u767a\u7684\u30fb\u7d50\u679c\u7684\u640d\u5bb3\u3092\u542b\u307f\u307e\u3059\u304c\u3001\u3053\u308c\u3089\u306b\u9650\u308a\u307e\u305b\u3093\uff09\u306b\u3064\u3044\u3066\u3001\u5f53\u65b9\u306f\u4e00\u5207\u8cac\u4efb\u3092\u8ca0\u3044\u307e\u305b\u3093\u3002\u3054\u5229\u7528\u306f\u5229\u7528\u8005\u3054\u81ea\u8eab\u306e\u8cac\u4efb\u3067\u304a\u9858\u3044\u3044\u305f\u3057\u307e\u3059\u3002<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":" 5. \u7279\u5fb4\u91cf\u62bd\u51fa 5.3 \u30d0\u30f3\u30c9\u30a8\u30cd\u30eb\u30ae\u30fc \u30d0\u30f3\u30c9\u30a8\u30cd\u30eb\u30ae\u30fc\u3068\u306f\u3001\u4fe1\u53f7\u306b\u542b\u307e\u308c\u308b\u300c\u7279\u5b9a\u306e\u5468\u6ce2\u6570\u5e2f\u300d\u306b\u3069\u308c\u3060\u3051\u306e\u5f37\u3055\uff08\u30d1\u30ef\u30fc\uff09\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u304b\u3092\u6570\u5024\u5316\u3059\u308b\u6307\u6a19\u3067\u3042\u308b\u3002\u76f4\u611f\u7684\u306b\u306f\u3001\u5468\u6ce2\u6570\u306e\u7269\u5dee\u3057\u3067\u4fe1\u53f7\u3092\u773a\u3081\u3001\u95a2\u5fc3\u306e\u3042\u308b\u5e2f\u2026<\/p>\n","protected":false},"author":1,"featured_media":571,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-684","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research"],"_links":{"self":[{"href":"https:\/\/www.shin-ichi.org\/index.php?rest_route=\/wp\/v2\/posts\/684","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shin-ichi.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shin-ichi.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shin-ichi.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shin-ichi.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=684"}],"version-history":[{"count":2,"href":"https:\/\/www.shin-ichi.org\/index.php?rest_route=\/wp\/v2\/posts\/684\/revisions"}],"predecessor-version":[{"id":805,"href":"https:\/\/www.shin-ichi.org\/index.php?rest_route=\/wp\/v2\/posts\/684\/revisions\/805"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.shin-ichi.org\/index.php?rest_route=\/wp\/v2\/media\/571"}],"wp:attachment":[{"href":"https:\/\/www.shin-ichi.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=684"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shin-ichi.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=684"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shin-ichi.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=684"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}