Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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A Design Compensation for Stable Flow/Pressure Control of Variable Displacement Type Piston Pump

가변용량형 피스톤 펌프의 안정적인 유량/압력제어를 위한 설계보상

  • 정동수 (한국기계연구원 유공압팀) ;
  • 김형의 (한국기계연구원 유공압팀) ;
  • 강이석 (충남대학교 기계설계공학과 BK21메카트로닉스사업단)
  • Published : 2007.03.01
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Abstract

Variable displacement type piston pump uses various controllers for controlling more than one state quantity like pressure, flow, power, and so on. These controllers need the mathematical model closely expressing dynamic behavior of pump for analyzing the stability of control systems which usually use various kinds of state variables. This paper derives the nonlinear mathematical model for variable displacement type piston pump. This model consists of two 1st oder differential equations by the continuity equations and one 2nd oder differential equation by the motion equation. To simplify the model we obtain the linear state variable model by differentiating the three nonlinear equations. And we verify this linearized model by comparison of simulation with experimentation and analyze the stability for the flow/pressure control. Finally this paper suggests the design compensation to ensure the stability of the systems.

Keywords

References

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