Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Feedback Control of Pump-Controlled Electro-Hydrostatic Actuation System

펌프 가변제어기반 유압시스템의 피드백 제어

  • Ryu, Jae-Kwan (Mechanical R&D Laboratory, LIGNex1 Co., Ltd.) ;
  • Seo, Hyung-Tae (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
  • 유재관 (LIG넥스원 기계연구개발) ;
  • 서형태 (한국과학기술원 기계공학과)
  • Received : 2016.08.29
  • Accepted : 2016.09.27
  • Published : 2016.10.01
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Abstract

This paper presents a position control strategy for a pump-controlled electro-hydrostatic actuator (EHA) using feedforward control with disturbance compensation. As the disturbance observer is used to estimate nonlinear dynamics of EHA, which has valve-opening conditionals, as well as external disturbances, an additional feedforward control is adopted to achieve rapid response. The effectiveness of the proposed control strategy is verified through experiment using an EHA test bench. The proposed controller shows better tracking performance compared with a conventional PID controller.

Keywords

References

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