Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Hybrid Adaptive Feedforward Control System Against State and Input Disturbances

시스템 상태 및 입력 외란을 고려한 하이브리드 방식의 적응형 피드포워드 제어시스템

  • 김준수 (한국폴리텍대학 창원캠퍼스 전자과) ;
  • 조현철 (울산과학대학교 전기전자학부) ;
  • 김관형 (동명대학교 컴퓨터공학과) ;
  • 하홍곤 (동의대학교 전자공학과) ;
  • 이형기 (부경대학교 제어계측공학과)
  • Received : 2011.04.12
  • Accepted : 2012.01.18
  • Published : 2012.03.01
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Abstract

AFC (Adaptive Feedforward Control) is significantly employed for improving control performance of dynamic systems particularly involving periodic disturbance signals in engineering fields. This paper presents a novel hybrid AFC approach for discrete-time systems with multiple disturbances in terms of control input and state variables. The proposed AFC mechanism is hierarchically composed of a conventional feedforward control framework and PID auxiliary control configuration in parallel. The former is generic to decrease periodic disturbance excited to control actuators and the latter is additionally constructed to overcome control deterioration due to time-varying uncertainty under given systems. We carry out numerical simulation to test reliability of our proposed hybrid AFC system and compare its control performance to a well-known conventional AFC method with respect to time and frequency domains for proving of its superiority.

Keywords

References

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