Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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On the Analysis of Dynamic Characteristics of Pipe Supporting Hydraulic Snubber in Electric Power Plant with State-space Model and Impulse Testing

상태공간 모델과 임펄스 시험에 의한 발전소 배관지지용 유압완충기의 동특성 해석

  • 이재천 (계명대학교 기계자동차공학부) ;
  • 임문혁 (계명대학교 기계자동차공학부) ;
  • 황태영 (한국기계연구원 산업기술연구부)
  • Published : 2002.10.01
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Abstract

This paper presents the modeling and analysis of dynamic characteristics of hydraulic snubber in electric power plant. The nonlinear state-space model of 14th order to describe the dynamics of the snubber was established by Simulink. The simulation results show that the hydraulic snubber reacts as like the conventional shock absorbers against the high pulse shock load. The snubber also shows the peculiar characteristics to the small step load, which temporarily lock the control valves up, however maintain same steady-state pressures of all internal chambers in the long run. Two case studies for the analysis of the snubber were addressed. Practical pulse testing method was also proposed to identify the frequency response characteristics of the snubber.

Keywords

References

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