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Scientia Silvae Sinicae ›› 2014, Vol. 50 ›› Issue (10): 99-105.doi: 10.11707/j.1001-7488.20141014

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Design and Implementation of a Fuzzy Control System for Wood Dehumidification Drying

Miao Hu1, Zhou Yucheng1,2, Hou Xiaopeng1,2, Liu Xinyu3, An Yuan1,2, Zhang Guoliang1   

  1. 1. Research Institute of Wood Industry, CAF Beijing 100091;
    2. Key Laboratory of Wood Science and Technology of State Forestry Administration Beijing 100091;
    3. China Foma (Group)Co., Ltd. Beijing 100029
  • Received:2013-11-07 Revised:2014-01-08 Online:2014-10-25 Published:2014-11-12

Abstract:

Analyzed with the overall structure and working principle of dehumidification drying equipment, in this study, a kind of intelligent control system was designed on the basis of fuzzy control. The control system could adjust the run-time proportion of dehumidifier dynamically according to the real-time changes of temperature and relative humidity in the drying kiln, then calculated turn-on time and stop time of dehumidifier in one control cycle T, so as to exactly control the drying process to meet the wood drying schedule. Production practice indicated that compared with instrument control, the control system designed in this study could shorten the drying time, from 30 days to 23 days; reduced the energy consumption and the energy-saving ratio is 17% on the premise of good drying quality. At the same time, the running time of dehumidifier decreased by 157 hours, so the device wear was reduced to extend the life of equipment. This study could provide a reference for the design and application of dehumidification drying equipment.

Key words: dehumidification drying for wood, fuzzy optimal control, dehumidifier

CLC Number: