{"id":1253,"date":"2021-01-29T14:23:25","date_gmt":"2021-01-29T05:23:25","guid":{"rendered":"http:\/\/tuat-chemphys.net\/?p=1253"},"modified":"2021-01-29T14:23:25","modified_gmt":"2021-01-29T05:23:25","slug":"%e3%80%8c%e3%82%80%e3%81%a0%e6%99%82%e9%96%93%e3%80%8d%e3%82%92%e6%9c%89%e3%81%99%e3%82%8b%e3%80%8c%e3%81%90%e3%82%89%e3%81%a4%e3%81%8f%e3%80%8d%e3%83%97%e3%83%ad%e3%82%bb%e3%82%b9%e3%81%ab%e5%af%be","status":"publish","type":"post","link":"https:\/\/tuat-chemphys.net\/?p=1253","title":{"rendered":"\u300c\u3080\u3060\u6642\u9593\u300d\u3092\u6709\u3059\u308b\u300c\u3050\u3089\u3064\u304f\u300d\u30d7\u30ed\u30bb\u30b9\u306b\u5bfe\u3057\u3066\u5b89\u5b9a\u5316\u5236\u5fa1. Stabilization control for wobbling process with “dead time” \u6587\u8cac: 2\u5e74 M.R."},"content":{"rendered":"\n

This study\/paper got the 2020 JCEJ Outstanding Paper Award (Society of Chemical Engineers, Japan) \u512a\u79c0\uff08\u82f1\u6587\uff09\u8ad6\u6587\u8cde.<\/strong><\/p>\n\n\n\n

\u5c71\u4e0b\u7814\u7a76\u5ba4\u306f\u9023\u7d9a\u81ea\u5df1\u632f\u52d5\u306e\u3082\u3068\u3067\u300c\u3080\u3060\u6642\u9593\u300d<\/strong>\u306b\u3088\u3063\u3066\u3050\u3089\u3064\u304f\u7a4d\u5206\u306b\u3088\u3063\u3066\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u52d5\u7684\u306a\u30d7\u30ed\u30bb\u30b9\u3092\u8a08\u7b97\u3059\u308b\u5b9f\u7528\u7684\u306a\u65b9\u6cd5\u3092\u63d0\u6848\u3057\u305f\u3002<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

\u672c\u7814\u7a76\u3067\u306f\u3050\u3089\u3064\u304d\u306f\u3001\u7dda\u5f62\u6027\u304c\u306a\u308a\u305f\u3063\u3066\u3044\u306a\u3044\u3053\u3068\u3001\u30d7\u30ed\u30bb\u30b9\u306e\u308f\u304b\u3063\u3066\u3044\u308b\u300c\u3080\u3060\u6642\u9593\u300d\u3084\u30d7\u30ed\u30bb\u30b9\u3092\u5236\u5fa1\u3059\u308b\u3068\u304d\u306b\u7528\u3044\u308b\u8a08\u7b97\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u304c\u9593\u9055\u3063\u3066\u3044\u308b<\/strong>\u3053\u3068\u304c\u7406\u7531\u3068\u3057\u3066\u4eee\u5b9a\u3059\u308b\u3002<\/p>\n\n\n\n

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\"\"<\/figure><\/div>\n\n\n\n

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<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

Yamashita Research Group proposed a practical method to control an integral process with dead time, under continuous self-excited oscillation.<\/p>\n\n\n\n

It is assumed that the cycle is caused by either the nonlinear property, dead time of the process, or inappropriate parameters. In the actual plants, it is not rare that the wrong PI parameters cause a cycle in slow-response integral processes. The method identifies the integral time constant and the dead time from period of oscillation and PI parameters. Given the internal model control (IMC) filter parameter, a simple method to design robust PI parameters is shown on the IMC.<\/p>\n\n\n\n

The proposed method will save step response tests in actual plants, which will make robust PI controllers more practical than ever. The method has already been applied to many actual chemical processes, and it has achieved significant increases in efficiency.<\/p>\n\n\n\n

\u3010\u7528\u8a9e\u3011<\/p>\n\n\n\n

\u30fb\u3080\u3060\u6642\u9593<\/strong>\u3000\uff1d\u3000\u4e00\u5b9a\u306e\u6642\u9593\u3067\u9045\u308c\u3066\u5909\u52d5\u3059\u308b<\/p>\n\n\n\n

\u30fbPI\u5236\u5fa1\uff1a<\/strong>P\u5236\u5fa1\u306bI\u5236\u5fa1\u3092\u52a0\u3048\u305f\u3082\u306e\u3002\u5236\u5fa1\u65b9\u6cd5\u306b\u6700\u3082\u3088\u304f\u4f7f\u308f\u308c\u308bPID\uff08P:\u6bd4\u4f8b\u3001I:\u7a4d\u5206\u3001D:\u5fae\u5206\uff09\u5236\u5fa1\u304c\u3042\u308b\u3002\u4f8b\u3048\u3070\u3001P\u5236\u5fa1\u5668\u306e\u69cb\u6210\u306f\u975e\u5e38\u306b\u5358\u7d14\u3067\u3042\u308b\u72b6\u614b\u91cf\u306e\u76ee\u6a19\u5024\u3068\u30bb\u30f3\u30b5\u30fc\u306a\u3069\u304b\u3089\u53d6\u5f97\u3057\u305f\u5024\u306e\u5dee\u3092\u3068\u308a\uff0c\u305d\u306e\u8aa4\u5dee\u306b\u5bfe\u3057\u3066\u30b2\u30a4\u30f3\u3092\u304b\u3051\u305f\u3082\u306e\u3092\u5165\u529b\u3068\u3057\u3066\u30b7\u30b9\u30c6\u30e0\u306b\u5370\u52a0\u3002<\/p>\n\n\n\n

\u6587\u8cac Text by: M.R. (2nd year undergraduate student) <\/p>\n\n\n\n

Reference:<\/p>\n\n\n\n

Process-Identification and Design of Robust PI Controller for a Self-Oscillating Integral Process with Dead Time<\/p>\n\n\n\n

Hironobu Takeda and Yoshiyuki Yamashita \u5c71\u4e0b \u5584\u4e4b, JOURNAL OF CHEMICAL ENGINEERING OF JAPAN (2019) \u00a0doi.org\/10.1252\/jcej.18we261<\/a> *H. Takeda was a TUAT doctoral student, and is also a researcher with Mitsubishi Chemical Engineering Corporation.\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"

\u63d0\u6848\u624b\u6cd5\u306f\u3001\u3059\u3067\u306b\u591a\u304f\u306e\u5b9f\u969b\u306e\u5316\u5b66\u30d7\u30ed\u30bb\u30b9\u306b\u9069\u7528\u3055\u308c\u3066\u304a\u308a\u3001\u5927\u5e45\u306a\u52b9\u7387\u5316\u3092\u5b9f\u73fe\u3057\u3066\u3044\u307e\u3059\u3002The method has already been applied to many actual chemical processes, and it has achieved significant increases in efficiency.<\/p>\n","protected":false},"author":2,"featured_media":1264,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[9],"tags":[13],"class_list":["post-1253","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research","tag-eco-friendly-systems"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":6867,"url":"https:\/\/tuat-chemphys.net\/?p=6867","url_meta":{"origin":1253,"position":0},"title":"\u79cb\u306e\u30aa\u30fc\u30d7\u30f3\u30ad\u30e3\u30f3\u30d1\u30b9\u3068\u30da\u30a2\u30ec\u30f3\u30c4\u30c7\u30fc 2025\/11\/9 Open Campus\/Labs","author":"unet","date":"2025-10","format":false,"excerpt":"\u7814\u7a76\u5ba4\u3092\u4e00\u6319\u3054\u7d39\u4ecb","rel":"","context":"In "Event\/News"","block_context":{"text":"Event\/News","link":"https:\/\/tuat-chemphys.net\/?cat=4"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/10\/image.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/10\/image.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/10\/image.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/10\/image.png?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":8118,"url":"https:\/\/tuat-chemphys.net\/?p=8118","url_meta":{"origin":1253,"position":1},"title":"\u300c\u6cb9\u6ef4\u300d\u306e\u306a\u304b\u3067\u4f55\u304c\u8d77\u304d\u3066\u3044\u308b\uff1f\u30aa\u30a4\u30eb\u30a2\u30a6\u30c8\u6cd5\u3067\u7d50\u6676\u306e\u5927\u304d\u3055\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30ebWhat happens inside the “oil droplet”? 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