• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

A study on performance improvement of centrifugal pendulum vibration absorber

Research Project

Project/Area Number 19K14928
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 20010:Mechanics and mechatronics-related
Research InstitutionHosei University

Principal Investigator

Aihara Tatsuhito  法政大学, 理工学部, 准教授 (70557909)

Project Period (FY) 2019-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords遠心振り子式動吸振器 / ねじり振動 / 駆動系 / トルク変動 / 軸 / 非線形振動 / 軌道
Outline of Research at the Start

軸のねじり振動を低減する装置の一つに遠心振り子式動吸振器(Centrifugal Pendulum Vibration Absorber, 以下CPVAとする)が提案されている.CPVAは振り子の固有角振動数が軸の定常回転数に応じて変化することから全回転数領域で振動低減効果を発揮する.これまでにCPVAを実用化するため,様々なタイプが提案されているが,実用化に至った例は大変少なく,さらなる性能向上が求められている.
本研究では振り子の軌道とその軌道を実現する振り子支持構造に着目し,理論・CAE・実験によりCPVAのねじり振動低減性能向上を狙う.本研究により性能が向上する設計指針が示され実用化および普及が期待される.

Outline of Final Research Achievements

In a centrifugal pendulum vibration absorber, the pendulum resonates by matching the natural frequency of the pendulum with the frequency of the external force, and a large vibration damping effect is obtained. However, performance deterioration may occur due to manufacturing errors and aging deterioration. Therefore, a design that does not cause a significant deterioration in performance is required even if the resonance point changes due to error or deterioration. Therefore, in order to enable such a robust design, in this study, I focused on the pendulum center of gravity orbit and approached and clarified the relationship between the orbit and vibration damping performance from both theoretical and CAE analysis. In the theory, to clarify the influence of the orbit, the orbit was formulated as an arbitrary orbit represented by a quadratic function. Furthermore, I constructed an actual vehicle model that can obtain the damping effect in the actual vehicle and verified the effect.

Academic Significance and Societal Importance of the Research Achievements

地球温暖化やエネルギー問題に対応するため自動車産業においては省燃費技術の開発が重要な課題となり,パワートレーンにおいてはエンジンの気筒数自体を減らす少気筒化が進んでいる.しかし少気筒化によりエンジンからのトルク変動が大きくなり振動騒音性能は悪化するため安易に少気筒化を進めることはできない.したがってこのトルク変動によるねじり振動を減らす装置の性能を向上させることにより積極的に少気筒化を進めることができ,その結果自動車の省燃費化につながる.本研究はこのねじり振動低減装置である遠心振り子式動吸振器の性能向上に関する研究であり,成果により装置のさらなる普及と燃費向上が見込まれる.

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (3 results)

All 2020 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (2 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Analysis of Torsional Vibration Reduction Performance for Roller Type of CPVA2019

    • Author(s)
      Takumi OSHIDA and Tatsuhito AIHARA
    • Journal Title

      Proceeding of The 10th TSME International Conference on Mechanical Engineering

      Volume: - Pages: 282-288

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Theoretical Analysis of Performance for Roller Type Centrifugal Pendulum Absorber2020

    • Author(s)
      Tatsuhito AIHARA
    • Organizer
      International Mechanical Engineering Congress & Exposition
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Analysis of Torsional Vibration Reduction Performance for Roller Type of CPVA2019

    • Author(s)
      Takumi OSHIDA and Tatsuhito AIHARA
    • Organizer
      The 10th TSME International Conference on Mechanical Engineering
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2019-04-18   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi