• 제목/요약/키워드: 1st.Intermediate Roll

검색결과 3건 처리시간 0.015초

젠지미어 압연기에서 Quarter Wave 방지 (Prevension of Quarter Wave in Sendzimir Mill)

  • 김종택;이영호;한석영;이준전;김종근
    • 대한기계학회논문집
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    • 제17권2호
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    • pp.257-266
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    • 1993
  • 본 연구에서는 보강롤의 굽힘변형을 고려한 젠지미어 압연기의 롤변형 해석을 통해, 궈터웨이브의 발생을 시뮬레이션하고, 형상제어 수단들의 궈터웨이브 억제에 미 치는 영향을 분석하여 궈터웨이브 감소 방안을 수립하였고, 실제 현장 압연실험을 통 해 그 제어효과를 확인하였다.

연속 가변 댐퍼에 의한 반능동 현가장치의 고 자유도 제어기 (High Tunable Control Algorithm for Semi-active Suspension by a Normal Type CDC Damper)

  • 최주용
    • 제어로봇시스템학회논문지
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    • 제16권11호
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    • pp.1096-1103
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    • 2010
  • This paper proposes CDC (Continuous Damping Control) algorithm and verifies in multi-body dynamic vehicle. In order to distinguish a road profile on driving, waviness calculated by the filtered vertical-accelerations of sprung and unsprung masses is introduced. Sky-hook control is used at a low waviness road and constant damping level control is used at a high waviness road, where the hard damping level is determined by waviness, roll rate, acceleration, and deceleration. The damping levels of ride, anti-roll, anti-squat, and anti-dive modules are calculated by tuning parameters which is dependent upon vehicle velocity. Therefore this high tunable algorithm is useful to improve the ride and handling performance under various driving conditions. In the simulations, tire and dampers are modelled by SWIFT (Short Wavelength Intermediate Frequency Tire) model and 1st order delay model, and results are compared with conventional damper's.