Transactions of The Korea Fluid Power Systems Society (유공압시스템학회논문집)

The Korean Society for Fluid Power and Construction Equipment (유공압건설기계학회)
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An Experimental Investigation on the Characteristics of An Automotive Air Spring

자동차 공기스프링의 특성에 대한 실험적 고찰

  • 이재천 (계명대학교 기계자동차학과) ;
  • 류하오 (계명대학교 전자화자동차부품지역혁신센터)
  • Received : 2010.03.24
  • Accepted : 2011.05.09
  • Published : 2011.06.01
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Abstract

The analysis of an air spring characteristics is necessary to design and control automotive air suspension system properly. A mathematical model of an air spring was derived in light of energy conservation first. Then static and dynamic experiments of the air spring have been fulfilled. The static stiffness with various initial pressures and effective areas were obtained from the static experimental results. Theoretical static stiffness obtained by using the mathematical model and effective area data is in close accordance with the experimental estimation. The dynamic experimental results show that the hysteresis in displacement-force cycle decreases when the frequency of the harmonic displacement excitation signal increases, but it does not change too much as the frequency is higher than 1Hz. And the dynamic stiffness goes up with increasing of the initial pressure and the excitation frequency.

Keywords

References

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