Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Dynamic Modeling and Pressure Control of Piezoactuator Based Valve Modulator Integrated with Flexible Flapper

유연 플래퍼와 연계한 압전 밸브 모듈레이터의 동적 모델링 및 압력 제어

  • Received : 2010.08.26
  • Accepted : 2010.10.05
  • Published : 2010.10.20
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Abstract

This paper proposes a novel type of pressure control mechanism which can apply to vehicle ABS (anti-lock braking system) utilizing the piezoactuator based valve system associated with the pressure modulator. As a first step, a flapper-nozzle of a pneumatic valve system is devised by integrating the piezoacuator to the flexible beam structure. The dynamic modeling of the valve system is then undertaken and subsequently the governing equation of pressure control is derived considering the pressure modulator. A sliding mode controller is designed in order to achieve accurate pressure tracking control in the presence of actuator uncertainty as well as input pressure variation. It is shown through computer simulation that an accurate pressure tracking for sinusoidal motion whose magnitude is 40 bar is achieved by utilizing the proposed pressure control mechanism.

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Acknowledgement

Supported by : 인하대학교

References

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