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1997 Fiscal Year Final Research Report Summary

On Health Monitoring of Solar Cell Array

Research Project

Project/Area Number 07651126
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

ISHIDA Ryohei  Osaka Prefecture University, College of Engineering, Assistant Professor, 工学部, 講師 (30145817)

Co-Investigator(Kenkyū-buntansha) SUGIYAMA Yoshihiko  Osaka Prefecture University, College of Engineering, Professor, 工学部, 教授 (90032268)
Project Period (FY) 1995 – 1997
KeywordsSolor Cell Array / Health Monitoring / Extended Kalman Filter / Genetic Algorithm / Fazzy Rule / Truss Structure
Research Abstract

The present research deals the damage detection problems for the potential field as a model of solar cell array and the two-dimensional truss structure.
To solve the damage detection problem for the potential field, the boundary element method (BEM) and the genetic algorithms (GA) are introduced. The potential filed is discretized into boundary elements and inner cells. The damage detection problem is formulated as a kind of minimization problem of the square of residual between the observation data and the boundary element data. To find the damaged cells, we introduce the fuzzy rule and the genetic algorithm which is an optimization algorithm based on the biological evolution. Simulations are carried out to clarify the effectiveness of the proposed damage detection scheme.
To detect of the damage of the two-dimensional truss structure, we propose the static damage detection scheme. The traditional damage detection scheme is the dynamic scheme based on the observation of natural frequency and vibration mode. The present scheme is based on the observation of static displacements. The truss structure is formulated by the finite element method (FEM). The proposed scheme is also formulated as a kind of minimization problem of the square of residual between the observation data and the calculated data. The damage of the truss structure is defined as the lack of elements. To find the damaged element of the structure, the genetic algorithm is introduced. Simulations are carried out to clarify the effectiveness of the proposed damage detection scheme.
In both simulations, it is assumed that a small number of sensors are installed to the solar cell array and the truss structure. The sensors are not installed to the every cell of the array and the every element of the truss but to the cells located on the panel boundary and some nodes. However, the simulation result shows that the proposed damage detection scheme is very effective.

  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] 石田良平 他: "GAを用いたトラス構造物のヘルスモニタリング" 第4回システム最適化に関するシンポジウム講演論文集. 185-190 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 神田博一,石田良平 他: "ファジィ理論と遺伝的アリゴリズムを用いたポテンシャル場の欠陥同定" 第38回構送強度に関する講演会講演集. 341-344 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 石田良平 他: "遺伝的アルゴリズムを用いたポテンシャル場の欠陥同定" 第46回応用力学連合講演会予稿集. 195-196 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] R.ISHIDA,H.OHNO and Y.SUGIYAMA: "Health Moritoring of Truss Structure Using Genetic Algorithm" Proc.of The 4th Symposium on System Optimization. 185-190 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.KOUDA,R.ISHIDA and Y.SUGIYAMA: "The Damage Detection of Potential Field with Genetic Algorithm and Fazzy Rule" Proc.of the 38th JSASS/JSME Structures Conference. 341-344 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] R.ISHIDA,H.KOUDA and Y.SUGIYAMA: "Damage Detection of Potential Field by Genetic Algorithm" Proc.of 46th National Congress of Theroretical and Applied Mechanics. 195-196 (1997)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-03-16  

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