Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)

The Korean Society of Industry Convergence (한국산업융합학회)
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A Study on Optimal Pressure Control of Hydraulic Nozzle for Vaccum Foam System of Refrigerator in the 900L Class

900L 냉장고 진공발포시스템 유압노즐의 최적 압력제어에 관한 연구

  • 조상영 (경남대학교 대학원 첨단공학과) ;
  • 김민성 (경남대학교 대학원 첨단공학과) ;
  • 구영목 (경남대학교 대학원 첨단공학과) ;
  • 양준석 (경남대학교 대학원 첨단공학과) ;
  • 신행봉 (경남대학교 대학원 첨단공학과) ;
  • 한성현 (경남대학교 기계공학부)
  • Received : 2016.05.11
  • Accepted : 2016.06.09
  • Published : 2016.06.30
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Abstract

This study proposes a new approach to control the nozzle pressure of homogenizer in refrigerator foam system in the 900L class. Generally, dynamic characteristics of the hydraulic nozzle system is highly nonlinear due to uncertain parameters, and it is very difficult to control of hydraulic dynamics. Firstly, it has been performed to derive a real-time control algorithm based on the mathematical model of hydraulic cylinder, and to estimate the values of the unknown parameter in the hydraulic system. Secondly, the feedback controller was designed to implement the optimal pressure control of the hydraulic nozzle system. Finally the control performance was illustrated by simulation.

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