服務熱線
13338170316
更新(xin)時(shi)間:2016-01-11 瀏覽次數:1613
人工氣候箱廠家的人工氣候箱不僅具有完善的加熱、加濕、光照、滅菌、制冷系統,而且可在24小時內模似自然界的光照情況,并任意設定不同時間的溫度及濕度。人工氣候箱適用于微生物、植物的生長栽培與培養,種子發芽、育苗,昆蟲、小動物的飼養;建材老化及電子產品的保存和試驗。是生產和科研部門的理想試驗設備。
人工氣候箱廠家的人工氣候箱跟光照箱一樣,能夠提供模擬的自然環境,如合適的溫度、濕度、光照度等等,為植物的生長提供必須的環境。另外,人工氣候箱的各個參數可以由人工自由設置,免去了自然環境不可控制的煩惱。溫濕度控制是人工氣候箱系統的zui有利武器,溫濕度控制的同時,我們可以用溫濕度自記儀進行測定,隨時了解人工氣候箱內的溫度以及濕度變化。
當溫度低而加熱的時候,水分蒸發,氣候箱里面以前制冷或者除濕凝結的水分會蒸發而增加內部的濕度;當溫度高而制冷的時候又會使經過制冷器的氣流濕度下降而使整個箱體的濕度下降;同樣當濕度低而加濕的時候,外部的冷或者熱濕氣又會改變內部的溫度,而濕度高除濕時又必然會導致溫度下降。所以溫度和濕度的控制是強耦合的。而且不同規格的箱體溫度和濕度的耦合程度是不一樣的。另外有時候氣候箱要求溫濕度多段循環控制,前后兩段溫濕度是不一樣的,而氣候箱溫濕度控制的數學模型又表明它們具有教大的延遲滯后特性,要達到上升速度快、過渡時間短、且超調小的目的,一般的控制方法很難奏效。
由上述分析可知人工氣候箱廠家制(zhi)(zhi)(zhi)造的(de)人工(gong)氣(qi)候(hou)(hou)箱(xiang)溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)(du)和濕度(du)(du)(du)(du)的(de)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)是(shi)相互(hu)耦(ou)合的(de)。這(zhe)樣,溫(wen)(wen)(wen)(wen)(wen)(wen)濕度(du)(du)(du)(du)的(de)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)實質上就(jiu)是(shi)一個大滯(zhi)后、強(qiang)(qiang)耦(ou)合系統的(de)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)問(wen)題。這(zhe)些特(te)點(dian)決定(ding)了(le)溫(wen)(wen)(wen)(wen)(wen)(wen)濕度(du)(du)(du)(du)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)要獲得較高精度(du)(du)(du)(du)有一定(ding)的(de)難度(du)(du)(du)(du)。一般人工(gong)氣(qi)候(hou)(hou)箱(xiang)采用單獨的(de)溫(wen)(wen)(wen)(wen)(wen)(wen)控(kong)(kong)(kong)(kong)儀(yi)和濕度(du)(du)(du)(du)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)儀(yi)來實現溫(wen)(wen)(wen)(wen)(wen)(wen)濕度(du)(du)(du)(du)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi),而他們的(de)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)方法(fa)也大部分是(shi)PID類控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)方法(fa),對于純滯(zhi)后參數(shu)時變(bian)的(de)系統控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)效果也不(bu)理(li)想,并(bing)且(qie)使(shi)用起來也不(bu)方便,而模糊控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)器是(shi)不(bu)依賴于系統的(de)數(shu)學模型的(de),免(mian)去了(le)辨(bian)識系統的(de)麻煩,具有很好(hao)的(de)自適應性,很適合模型不(bu)確定(ding)、參數(shu)變(bian)化等控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)場合,正好(hao)可以(yi)適應人工(gong)氣(qi)候(hou)(hou)箱(xiang)溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)(du)濕度(du)(du)(du)(du)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi),所以(yi)本人工(gong)氣(qi)候(hou)(hou)箱(xiang)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)器采用模糊控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)的(de)方法(fa)來控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)箱(xiang)體氣(qi)流的(de)溫(wen)(wen)(wen)(wen)(wen)(wen)濕度(du)(du)(du)(du),同(tong)時也使(shi)用模糊解耦(ou)的(de)方法(fa)來解決溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)(du)和濕度(du)(du)(du)(du)強(qiang)(qiang)耦(ou)合的(de)問(wen)題。
掃一掃
歡迎關注我們網站平臺