turnaround condition 中文意思是什麼
turnaround condition
解釋
反轉條件- turnaround : 1. 車輛調頭處；（思想、立場的）轉變。2. 回航[卸貨、加油、檢修、上貨]所需時日；來回。3. 小修，預防處理。
- condition : n 1 狀態，狀況，情形；品質。2 〈pl 〉外界狀況，周圍情形。3 地位，身分。4 條件；【語法】條件子句。...
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Finally, we can not use electric power but the engine of bus or subsidiary engine to drive air compressors of bus air conditions. because the change range of turnaround speed of engine is very wide, that brings difficulties in controlling the rate of flow of cold - producing medium. in the control of bus air - conditions, preventing evaporator from freezing to make the air - conditions work with high efficiency and controlling the temperature of railway carriage are the basic tasks in air - condition control
與一般的建築空調相比，汽車空調的工作環境惡劣，條件差，控制難度要增加很多，主要體現在以下幾個方面：一是車外熱負荷變化大，難以確定控制參數；二是要求空調負荷大，而且要控制空調使其降溫迅速：三，不便於用電力作為動力源，必須用汽車發動機或輔助發動機來帶動壓縮機，當採用汽車發動機作為動力源時，由於汽車的車速變化大，發動機轉速的變化可從600r min到4000r min ，壓縮機轉速與發動機轉速成正比，其轉速變化高達7倍，給空調系統製冷劑流量控制帶來困難。 -
This controlling way can make the passengers feel much comfortable and make the bus air - conditions work with a high efficiency. in this thesis, a single - chip microcomputer fuzzy controlling system with mcu : at89c51 is designed to deal with the bus whole air - condition composed with refrigerating system and heating system. via controlling the open of temperature door, turnaround speed of evaporator fan and subsidiary engine, it can control temperature of railway carriage
本論文針對獨立式全空調型（完全合一型）客車空調系統，設計了一個以at89c51為核心的採用模糊控制演算法的嵌入式單片機控制系統，通過控制溫度門的開口角度、蒸發器風扇的轉速、輔助發動機的轉速來控制車廂內的溫度，通過壓縮機的開、停對蒸發器除霜，系統具有溫度顯示、用戶設定的分擋多級溫度控制、在線控制參數修改等功能。
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