循環式幹燥機控制系統之開發試驗

Abstract

此研究目的在於開發與試驗水稻循環式乾燥機所使用之控制系統。主要控制目標為乾燥過程中之乾減率。控制策略包括調質乾燥技術，熱風溫度自動控制與均化時間自動控制。控制軟體係以組合語言撰寫。控制系統有故障自我診斷功能，並預留訊號輸出與輸入端子。各單機之控制系統可連結成為多機中央監控系統。乾燥作業之性能顯示此乾燥系統具有胴裂低，乾減率穩定之特點。此控制系統已商品化，並已外銷至海外。 A control system adopted by rice circulating dryer was developed and tested. The dominant control object was to control the drying rate on the drying processing of dryer. The control strategy included the tempering drying technique, auto-control of temperature for heating air and auto-control of tempering period. The control software was written by assembly language. The control system had the self-diagnosis function and preparation of the signal output and input terminals. The control system of each units could be linked to become a central control systems. The performance test of the control system indicated the lower percentage of rice cracking and stable drying rate. These systems have been commercialzied and be sold to foreign countries.