近年來,電腦之執行運算速度,快速增進,致使類神經網路( Artificial Neural Networks)廣泛地應用於各領域中,然而,要構建好 的類神經網路的確是很複雜的,因其含有多個學習參數,如隱藏層數及其 運算元數、學習速率、動量因素、起始權數、學習樣本數等等,必須對其 一一做最佳設定,方能使類神經網路之學習與回想能力為最好。 本研 究是以國內一家相紙製造加工廠之空調系統溫濕度控制異常診斷與處理為 例進行研究,採用類神經網路之多層倒傳遞模式(Multilayer Back- Propagation Model)進行學習訓練,計有十個輸入特徵訊號,以五個輸出 運算元做為異常診斷與處理。先以田口技術(Taguchi Techniques)設計方 法分析及找尋較佳之各學習參數值,作為啟始佳解,接著以其較顯著之學 習參數做為反應曲面法(Response Surface Methodology :RSM)之設計參 數,經實驗設計分析而後得最佳之各學習參數值,使類神經網路之輸出誤 差為最小,空調溫濕度異常診斷與處理效果為最好。
The speed of the computer operation has been increasing in recent years so that Artificial Neural Networks could be applied to various fields widely. However, to construct a good Artificial Neural Networks is complicated because it involves several Learning Parameters, such as Hidden layers, Hidden layer units, Learning rate, Momentum, Initial weight, Learning samples, etc.. Therefore, they have to be well-set-up respectively to make the learning and recall performance of Artificial Neural Networks greater. This paper is based on the fault diagnosis and treatment of air-conditional system''s temperature and humidity control in a domestic film process plant. It utilizes Multilayer Back-Propagation Model of Artificial Neural Networks to proceed learning, including ten input feature signals which use five output processing elements as fault diagnosis and treatment. First, to analyze and find the better learning parameters values as the initial optimal solution by Taguchi Methods. Then, to use the significant learning parameters as the designed parameters of Response Surface Methodology, after the design and analysis of the experiment, we obtain the optimal learning parameters values to make the minimum output error of Artificial Neural Networks and to achieve the best effects of the fault diagnosis and treatment of air-conditional system''s temperature and humidity control.