2023 Fiscal Year Final Research Report
Precise control using multi-degree-of-freedom pulse-modulation-type input
| Project/Area Number |
20K04530
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 21040:Control and system engineering-related
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| Research Institution | Utsunomiya University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
平田 光男 宇都宮大学, 工学部, 教授 (50282447)
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| Project Period (FY) |
2020-04-01 – 2024-03-31
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| Keywords | 多自由度パルス変調 / 厳密線形化 / サンプル点間応答 / 周波数整形PWM型終端状態制御 / 三相インバータ / 三相交流モータ |
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| Outline of Final Research Achievements |
In various fields, the pulse modulation scheme has been used to control systems, and its advantages such as energy conservation have been widely accepted. However, high-speed high-precision motion control keeps a distance from employing the PWM scheme, because its complex characteristics often cause the degradation of control performance. For pulse-drive control systems, this study has built a methodology to bring its performance close to that of ideal continuous-valued input-drive system by taking into account the relatively fast dynamics compared to the sampling frequency, and moreover, shown via several numerical experiments of practical systems including a three-phase AC motor that it is effective.
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| Free Research Field |
制御工学
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| Academic Significance and Societal Importance of the Research Achievements |
矩形波の数/幅/配置の操作はスイッチングによるものであり，制御系に新たなアクチュエータを追加することなく操作量の自由度を増やすという戦略に他の研究グループにない特色がある．また，パルス駆動系のサンプリングに比べて相対的に速いダイナミクスについてはこれまで充分に研究されておらず，本研究は先駆的といえる．加えて，本研究は電力変換を伴うシステムに対する汎用的な制御法の開発を核としその応用範囲は広いが，さらに空圧式除振台やジェットスラスタ系のような流体量のon-offバルブ操作を用いたモーションコントロール系についても同様の理論展開が可能である．
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