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1999 Fiscal Year Final Research Report Summary

Optimum Design of Compact Integrated Smart Hybrid Composites

Research Project

Project/Area Number 09650113
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Materials/Mechanics of materials
Research InstitutionOSAKA CITY UNIVERSITY

Principal Investigator

FUKUDA Takehito  OSAKA CITY UNIVERSITY, DEPARTMENT OF INTELLIGENT MATERIALS ENGINEERING, PROFESSOR, 工学部, 教授 (40047155)

Co-Investigator(Kenkyū-buntansha) TAKAWA Takeshi  SETSUNAN UNIVERSITY, DEPARTMENT OF INDUSTRIAL AND SYSTEMS ENGINEERING, PROFESSOR, 工学部, 教授 (60236370)
Project Period (FY) 1997 – 1999
KeywordsPiezoceramics / Electro-rheological Fluids / Smart CFRP Laminates / Integration / Vibration Control / Hybrid Effect / Fuzzy Controller / ファジイコントローラ
Research Abstract

The application of piezoceramics and electro-rheological fluids (ERF) actuators to vibration control of a composite CFRP beam was investigated. The results obtained are summarized as follows ;
(1) Vibration control of a hybrid smart composite beam actuated by both electro-rheological fluids (abbreviated to ERF) and piezoceramic actuators was investigated. A carbon fiber reinforced plastics (CFRP) beam including interleaved ERF and bonded piezoceramics was prepared and tested under sinusoidal external excitations. Four kinds of feedback control strategies for both ERF and piezoceramic actuators were adopted to suppress the deflection at the free end of the cantilevered composite beam, because application of linear control theory to working out optimum control strategy was difficult owing to intense nonlinearity in ERF actuator. The optimum combination of these control strategies for two types of actuators was discussed when the two actuators operated simultaneously.
(2) Fuzzy control of vibration was investigated for the same hybrid smart composite beam as used in the research (1). GFRP cantilevered beam was oscillated under the forced sinusoidal external excitation. Fuzzy model of controlled element containing two actuators was formed due to the reason desvribed in the previous study (1). Parameters of fuzzy model were identified by using a hybrid neuro-fuzzy system. Fuzzy controller for vibration suppression of the composite beam was designed based on the fuzzy model by using the modern control theory. The effect of vibration control system with a fuzzy controller was verified by simulation and experiment.

  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] T. Takawa, T. Fukuda and N. Nakashima: "Fuzzy Control of Vibration of a Smart CFRP Laminated Beam"Smart Materials and Structures (in press). (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T. Fukuda, T. Takawa and K. Nakashima: "Optimum Vibration Control of CFRP Sandwich Beam Using Electro-Rheological Fluids and Piezoceramic Actuators"Smart Materials and Structures. 9・1. 121-125 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T. Fukuda, T. Takawa and K. Nakashima: "Fuzzy Control of Vibration of a Smart CFRPLaminated Beam"proceedings of 12th International Conference on Composite Materials. CD-ROM (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T. Fukuda, S. Talashima and N. Oshima: "Application of ER Fluid to Gyro Stabilizer"Abstracts of the 7th International Conference on ER Fluids and MR Suspension. 27 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T. Fukuda and K. Osaka: "In Situ Strain Measuring and Cure Monitoring of Composite Materials in Autoclave Molding"Proceedings of the 2nd Workshop on Structural Health Monitoring. 247-256 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 谷順二編、福田武人 他7名: "インテリジェント材料・流体システム"コロナ社. 201 (2000)

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

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Published: 2001-10-23  

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