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ACTIVE SHAPE AND VIBRATION CONTROL OF FLEXIBLE SPACE STRUCTURES

Research Project

Project/Area Number 08651091
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Aerospace engineering
Research InstitutionOSAKA PREFECTURE UNIVERSITY

Principal Investigator

OKUBO Hiroshi  OSAKA PREFECTURE UNIVERSITY,College of Engineering ASSOCIATE PROFESSOR, 工学部, 助教授 (40094502)

Co-Investigator(Kenkyū-buntansha) KOMATSU Nobuo  SHIZUOKA INSTITUTE OF SCIENCE AND TECHNOLOGY,DEPT.OF MECHANICAL SYSTEMS ENG., AS, 理工学部, 講師 (80215392)
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1997: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1996: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsFLEXIBLE SPACE STRUCTURES / STRUCTURAL CONTROL / VIBRATION CONTROL / LASER MEASUREMENT SYSTEMS / CONTROL SYSTEM DESIGN / ROBUST CONTROL / 形状制御 / レーザー計測 / 構造と制御の同時最適化 / レーザ計測
Research Abstract

1. Since design models of flexible space structures contain significant uncertainties, the designed controller must have sufficient robustness with respect to such model uncertainties. Besides, space structures have abundant structural design freedom that enables simultaneous/integrated design of structure and controller. In this research project, a method of structure/controller design via robust pole assignment has been developed for active vibration suppression of flexible structures. The proposed method assigns the closed-loop eigenvalues at target locations and quasi-minimizes the condition number of the closed-loop modal matrix by designing structure and controller parameters. The condition number is a measure of the closed-loop system robustness that is related to the maximum deviation of the closed-loop eigenvalues subject to perturbations of the system matrix. The condition number is also a measure of the control performance, which gives the upper bound of magnitude of feedbac … More k gain matrix and transient responses. Therefore reducing the condition number improves tabiliy rebustness and control performance of the designed closed-loop system. The proposed method further reduces the resulting closed-loop condition number via structure/controller design. The target closed-loop pole locations can also be redesigned as the design parameters. A new index of condition number has been introduced as the cost function. Use of this index in place of actual condition number reduces computational effort and improves problem solvability. Feasibility of the proposed method is examined by numerical simulations.
2. Fundamental studies have been done for developing methods of shape measurement, estimation and control for active shape control of flexible structures. The proposed estimation and control design methods have been applied to a tendon shape control system for a cantilevered beam. The results of numerical simulation show that the magnitude of the restoration errors largely depends on the number of available actuators and their locations. Less

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] 大久保博志: "柔軟宇宙構造物の形状推定と最適制御" 日本機械学会論文集(C)編. 62-601. 3479-3485 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Hiroshi Okubo: "Tendon Control System for Active Shape Control of Space Structures" J.of Intelligent Material Systems and Structures. 7. 470-475 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Hiroshi Okubo: "Path Planning for Space Manipulators to Reduce Attitude Distrbances" J.of Guidance, Control and Dynamics. 20. 609-611 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Hiroshi Okubo: "Robust Pole Assignment for Vibration Control of Flexible Structures" Proceedings of the 8th Int.Conf.on Adaptire Structures. 257-246 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Okubo, N.Komatsu, T.Tsumura, and O.Fukudomi: "Shape Estimation and Optimal Control of Flexible Space Structures (in Japanese)" Trans.JSME. Vol.C62, No.601. 3479-3485 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Okubo, N.Komatsu and T.Tsumura: "Tendon Control System for Active Shape Control of Flexible Space Structures" Journal of Intelligent Material Systems and Structures. Vol.7. 470-475 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Okubo, N.Nagano, N.Komatsu and T.Tsumura: "Path Planning for Space Manipulators to Reduce Attitude Disturbances" J.of Guidance Control, and Dynamics. 20-3. 609-611 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Okubo and H.Ichikawa: "Robust Pole Assignment for Vibration Control of Flexible Structures" Proc.of the Eighth International Conference on Adaptive Structures and Technologies. 237-246 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Okubo, N.Komatsu and S.Zeniya: "Robust Pole Assignment for Active Control of Adaptive Space Structures (in Japanese)" Preprints of the 72nd JSME Annual Conference. 637-638 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Okubo, S.Zeniya, and H.Ichikawa: "Robust Pole Assignment for Active Control of Adaptive Space Structures (in Japanese)" Preprints of the Dynamics and Design Conference. 251-254 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Okubo and H.Ichikawa: "Quasi-Optimal Design of Structure and Controller via Robust Pole Assignment (in Japanese)" Preprints of the 5th JSME Symposium on Motion and Vibration Control. 27-30 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Okubo, H.Ichikawa, and T.Nishimura: "Integrated Design of Structure and Controller via Robust Pole Assignment (in Japanese)" Preprints of the 72nd JSME Annual Conference. 149-150 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Hiroshi Okubo: "Robust Pole Assignment for Vibration Control of Flexible Structures" Proc.of the 8th Int.Conf.on Adaptive Structures and Technologies. (4月刊行予定). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Hiroshi Okubo: "Path Planning for Space Manipulators to Reduce Attitude Disturbance" J.of Guidance Control and Dynamics. 20・3. 609-611 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 大久保博志: "柔軟宇宙構造物の極指定ロバスト制御" 日本機械学会機械力学計測制御講演論文集. 97-10(A). 251-254 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 大久保博志: "柔軟構造物制御系のロバスト故障診断" 日本航空宇宙学会関西中部支部合同秋期大会講演集. 75-76 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 大久保博志: "ロバスト極配置法による構造制御系の最適設計" 日本機械学会シンポジウム「運動と振動の制御」講演論文集. 97-31. 27-30 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 市川裕之: "柔軟構造物の振動制御のためのロバスト極配置" 計測自動制御学会関西支部シンポジウム講演論文集. 1-4 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 大久保博志: "柔軟宇宙構造物の形状推定と最適制御" 日本機械学会論文集. C62-601. 3479-3485 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Hiroshi Okubo: "Tendon Control System for Active Shape Control of Flexible Space Structures" J. of Intelligent Material Systems and Structures. 7・4. 470-475 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Toshihiro Tsumura: "Position Measurement System for Plural Vehicles Using Laser Scanner" Proc. of the Japan-USA Symposium on Flexible Automation. 541-544 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 大久保博志: "ロバスト極配置法による適応宇宙構造物の制御系設計" 日本機械学会第73期通常総会講演会講演論文集. 96-1・IV. 637-638 (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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