{"created":"2023-06-20T14:40:32.696228+00:00","id":7446,"links":{},"metadata":{"_buckets":{"deposit":"14d7a7af-17f5-40c3-8c5b-d3a0b848e40d"},"_deposit":{"created_by":1,"id":"7446","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"7446"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00007446","sets":["1543:1544:1556","1887:1891"]},"author_link":["39640","39641","39647","39645","39643","39646","39642","39644"],"item_5_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"柔軟構造を有する人工衛星ASTRO-Gのための高速姿勢制御の1検討"}]},"item_5_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2008-03","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"51","bibliographicPageStart":"46","bibliographic_titles":[{"bibliographic_title":"第17回アストロダイナミクスシンポジウム講演後刷り集　2007"},{"bibliographic_title":"Proceedings of 17th Workshop on JAXA Astrodynamics and Flight Mechanics","bibliographic_titleLang":"en"}]}]},"item_5_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"電波天文観測衛星'ASTRO-G(Radio-Astronomical Satellite)'がVSOP-2(VLBI Space Observatory Program-2)計画のために2012年に打ち上げられる予定である。VLBI(Very Long Baseline Interferometry)観測における大気位相揺らぎ較正のため、ASTRO-Gは搭載アンテナを観測対象の天体とクエーサと呼ばれる較正天体に交互に指向する姿勢制御を行う必要がある。大気位相揺らぎが1分周期で移り変わるため、姿勢変更は1分周期という早い時間で行われる。また、搭載する直径8mの大型アンテナは柔軟構造として扱う必要がある。この様な大型な柔軟構造物はモーダルパラメータの同定が難しいと考えられ、ロバスト制御が必要とされる。この様に、ASTRO-Gの姿勢制御系には、柔軟構造のモデル化誤差に対するロバスト性を持ち、かつ高速な姿勢変更を行うことが要求される。現在、ASTRO-Gに対して、フィードフォワードを主とした制御系が考えられている。この方式では、フィードフォワード指令として、神谷らにより全く振動を励起しないNME(Nil-Mode-Exciting)profilerが提案されており、フィードフォワードのみの制御系でも姿勢変更を行うことが可能である。しかしながら、アクチュエータ、センサなどの特性により、振動が励起されてしまうのではないか、ということが懸念されている。そこで、本稿ではASTRO-Gの姿勢制御系に対し、フィードバック制御系の適用可能性を検討する。設計する姿勢制御系は、H(sub ∞)制御器とNME profilerにより構成される2自由度制御系である。数値シミュレーションにより、設計した2自由度制御系の評価を行い、フィードバック系の適用可能性を検討する。","subitem_description_type":"Abstract"}]},"item_5_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"ASTRO-G (Radio-Astronomical Satellite) will be launched for VSOP (VLBI Space Observatory Program)-2. ASTRO-G has to maneuver the attitude between target celestial-object and quasar alternately and quickly, because VLBI (Very Long Baseline Interferometry) observation requires calibration for phase fluctuations of atmosphere which changes fast. In addition, ASTRO-G will have a huge antenna to compose VLBI, which is a flexible structure and difficult to model. Therefore, in the ASTRO-G mission, attitude control system has to satisfy these challenging requirement: Agile maneuvering and flexible structures. In the current strategy of the attitude control system, feedforward control is mainly applied to ASTRO-G mission. In this strategy, reference called 'NME (Nil-Mode-Exciting) profiler' is proposed by Toshio Kamiya et al. to excite no flexible modes in agile maneuver. Authors, however, are concerned about unexpected disturbance, characteristics of actuators and sensors, noise and so on. On the other hand, feedback control is desirable because it can have robustness against unexpected disturbance. In this paper, we studied whether feedback control is applicable for ASTRO-G mission. Two DOF (Degree Of Freedom) control is applied to ASTRO-G's attitude control system: Robust H(sub infinity) control and NME profiler. The simulation results show the effectiveness of two DOF control system for the agile maneuvering with flexible structures.","subitem_description_type":"Other"}]},"item_5_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0063718009","subitem_description_type":"Other"}]},"item_5_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙航空研究開発機構宇宙科学研究本部"}]},"item_5_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)"}]},"item_5_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東京大学"},{"subitem_text_value":"宇宙航空研究開発機構 宇宙科学研究本部"},{"subitem_text_value":"宇宙航空研究開発機構 宇宙科学研究本部"},{"subitem_text_value":"宇宙航空研究開発機構 宇宙科学研究本部"}]},"item_5_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"University of Tokyo"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Institute of Space and Astronautical Science"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Institute of Space and Astronautical Science"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Institute of Space and Astronautical Science"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"中邨, 勉"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"坂東, 信尚"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"坂井, 真一郎"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"齋藤, 宏文"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Nakamura, Tsutomu","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Bando, Nobutaka","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Sakai, Shinichiro","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Saito, Hirobumi","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"姿勢制御","subitem_subject_scheme":"Other"},{"subitem_subject":"H無限大制御","subitem_subject_scheme":"Other"},{"subitem_subject":"NMEプロファイラ","subitem_subject_scheme":"Other"},{"subitem_subject":"フィードバック制御","subitem_subject_scheme":"Other"},{"subitem_subject":"フィードフォワード制御","subitem_subject_scheme":"Other"},{"subitem_subject":"ASTRO-G","subitem_subject_scheme":"Other"},{"subitem_subject":"電波天文衛星","subitem_subject_scheme":"Other"},{"subitem_subject":"VSOP","subitem_subject_scheme":"Other"},{"subitem_subject":"柔軟構造宇宙機","subitem_subject_scheme":"Other"},{"subitem_subject":"制御系設計","subitem_subject_scheme":"Other"},{"subitem_subject":"制御安定性","subitem_subject_scheme":"Other"},{"subitem_subject":"運動方程式","subitem_subject_scheme":"Other"},{"subitem_subject":"制御シミュレーション","subitem_subject_scheme":"Other"},{"subitem_subject":"振動","subitem_subject_scheme":"Other"},{"subitem_subject":"attitude control","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"H-infinity control","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"NME profiler","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"feedback control","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"feedforward control","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"ASTRO-G","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Radio-Astronomical Satellite","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"VSOP","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"flexible spacecraft","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"control system design","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"control stability","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"equation of motion","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"control simulation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"vibration","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"conference paper","resourceuri":"http://purl.org/coar/resource_type/c_5794"}]},"item_title":"Study of robust feedback controller for agile and flexible spacecraft ASTRO-G","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Study of robust feedback controller for agile and flexible spacecraft ASTRO-G","subitem_title_language":"en"}]},"item_type_id":"5","owner":"1","path":["1556","1891"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"7446","relation_version_is_last":true,"title":["Study of robust feedback controller for agile and flexible spacecraft ASTRO-G"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-21T07:39:24.589704+00:00"}