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Evaluation of Robust Performance of Fuzzy Supervisory Control Technique

퍼지관리제어기법의 강인성능평가

  • 옥승용 (서울대학교 교량설계핵심기술연구단) ;
  • 박관순 (동국대학교 건축공학과) ;
  • 고현무 (서울대학교 지구환경시스템공학부)
  • Published : 2005.10.01

Abstract

Using the variable control gain scheme on the basis of fuzzy-based decision-making process, Fuzzy supervisory control (FSC) technique exhibits better control performance than linear control technique with one static control gain. This paper demonstrates the effectiveness of the FSC technique by evaluating the robust performance of the FSC technique under the presence of uncertainties in the models and the excitations. Robust performance of the FSC system is compared with that of optimally designed LQG control system for the benchmark cable-stayed bridge presented by Dyke et al. Parameter studies on the robust performance evaluation are carried out by varying the stiffness of the bridge model as well as the magnitudes of several earthquakes with different frequency contents. From the comparative study of two control systems, FSC system shows the enhanced control performance against various magnitudes of several earthquakes while maintaining lower level of power required for controlling the bridge response. Especially, FSC system clearly guarantees the improved robust performance of the control system with stable reduction effects on the seismic responses and slight increases in total power and stroke for the control system, while LQG control system exhibits poor robust performance.

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Cited by

  1. Robust Performance of Fuzzy Supervisory Control for Seismically Excited Cable-Stayed Bridge vol.15, pp.7, 2012, https://doi.org/10.1260/1369-4332.15.7.1197