International Journal of Precision Engineering and Manufacturing

  • 제6권4호
  • /
  • Pages.37-43
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  • 2005
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  • 2234-7593(pISSN)
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  • 2005-4602(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

A Hybrid Control Development to Suppress the Noise in the Rectangular Enclosure using an Active/Passive Smart Foam Actuator

  • Kim Yeung-Shik (School of Mechanical Engineering, Kumoh National University of Technology) ;
  • Kim Gi-Man (School of Mechanical Engineering, Kumoh National University of Technology) ;
  • Roh Cheal-Ha (School of Mechanical Engineering, Kumoh National University of Technology) ;
  • Fuller C. R. (Department of Mechanical Engineering, Virginia Polytechnic Institute and State University)
  • 발행 : 2005.10.01
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초록

This paper presents a hybrid control algorithm for the active noise control in the rectangular enclosure using an active/passive foam actuator. The hybrid control composes of the adaptive feedforward with feedback loop in which the adaptive feedforward control uses the well-known filtered-x LMS(least mean square) algorithm and the feedback loop consists of the sliding mode controller and observer. The hybrid control has its robustness for both transient and persistent external disturbances and increases the convergence speed due to the reduced variance of the jiltered-x signal by adding the feedback loop. The sliding mode control (SMC) is used to incorporate insensitivity to parameter variations and rejection of disturbances and the observer is used to get the state information in the controller deign. An active/passive smart foam actuator is used to minimize noise actively using an embedded PVDF film driven by an electrical input and passively using an absorption-foam. The error path dynamics is experimentally identified in the form of the auto-regressive and moving-average using the frequency domain identification technique. Experimental results demonstrate the effectiveness of the hybrid control and the feasibility of the smart foam actuator.

키워드

참고문헌

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