Model Indentification and Discrete-Time Sliding Mode Control of Electro-Hydraulic Systems

전기-유압 서보 시스템의 모델규명 및 이산시간 슬라이딩 모드 제어

  • 엄상오 (양산대학 환경안전과) ;
  • 황이철 (동의대학교 기계·산업시스템공학부) ;
  • 박영산 (한국해양대학교 대학원)
  • Published : 2000.01.01

Abstract

This paper describes the model identification and the discrete-time sliding mode control of electro-hydraulic servo systems which are composed of servo valves, double-rod cylinder and load mass. The controlled plant is identified as a 3th-order discrete-time ARMAX model obtained from the prediction error algorithm, where a nominal model and modeling errors are zuantitatively constructed. The discrete sliding mode controller for 3th-order ARMAX model is designed in discrete-time domain, where all states are observed from Kalman filter. The discrete sliding mode controller has better tracking performance than that obtained from continuous-time sliding mode controller, in experiment.

Keywords

References

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