Journal of KSNVE (소음진동)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Automotive Active Suspension Design Using LQG/LTR Method

LQG/LTR 설계방법을 이용한 자동차 현가장치 능동제어

  • 황재혁 (한국항공대학교, 항공기계공학과) ;
  • 박봉철 (한국항공대학교 대학원) ;
  • 백승호 (한국항공대학교 대학원)
  • Published : 1993.12.01
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Abstract

An automotive suspension system generally behaves like a low frequency band-pass filter(0.5 - 10 Hz). Passengers are very sensitive to this frequency range in terms of ride quality and road holding ability. In this paper, a LQG/ LTR controller is suggested to improve the ride quality and road holding ability in the specified frequency rage. It has been found by numerical simulation that the ride quality and road holding ability can be improved in the frequency ranges of 0.5 - 3.0 Hz and 0.3 - 2.1 Hz respectively. In addition, a new approach using root locus to evaluate the stability robustness of the active suspension system is studied. It is shown that the stability robustness of the LQG/LTR controller designed in this paper is improved, compared to the passive system.

Keywords

References

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