Journal of Drive and Control (드라이브 ㆍ 컨트롤)

The Korean Society for Fluid Power and Construction Equipment (유공압건설기계학회)
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Effect of Control Valve Flow Rates Characteristics on the Performance of an Air Spring

제어밸브의 유량특성에 따른 에어스프링의 성능 변화

  • Han, Seung Hun (Department of Control & Mechanical Engineering, Graduate School, Pukyong National University) ;
  • Jang, Ji Seong (Department of Mechanical System Engineering, Pukyong National University) ;
  • Ji, Sang Won (Department of Mechanical System Engineering, Pukyong National University)
  • Received : 2016.06.15
  • Accepted : 2016.07.07
  • Published : 2016.09.01
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Abstract

This study describes the effect of the critical pressure ratio of a control valve on the performance of an air spring system composed of an air spring, auxiliary chamber, control valve and mass in order to suggest a more efficient design for an air spring system. The critical pressure ratio of the control valve is assumed to have a fixed value, but the critical pressure ratio of the control valve is known to have various values between 0.05 and 0.6, and the effect of the variation of the critical pressure ratio on the performance of the air spring system has not yet been reported. The analysis derives nonlinear and linear governing equations of the air spring system, including the critical pressure ratio of the control valve. This simulation study is presented to show that the impedance and transmissibility characteristics of the air spring system change due to variations in the critical pressure ratio of the control valve as well as its sonic conductance. As a result, the critical pressure ratio of the control valve should be maintained as large as possible to improve the vibration isolation characteristics of the air spring system.

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References

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