extra variable 中文意思是什麼
extra variable
解釋
附加變數-
With the development of multi - variable control technology and aero - propulsion technology, future excellent engine must have the character, which is high ratio in thrust and weight low fuel and long use life. therefore the control system of aero - engine has also been becoming more and more complicated. the precision of control system is also extra higher
隨著高推重比、低油耗、長使用壽命、高機動性航空發動機的研製，現代航空發動機需要控制的變量越來越多、精度越來越高，因此，航空發動機控制系統變得越來越復雜，傳統的航空發動機控制系統是採用機械液壓控制。 -
Some effective methods are given out to eliminate the extra force in this paper, such as variable structure pid control, position compensation, and velocity feedback. they greatly improve the performance of the loading system. but for the full - loading of fore - landing gear, it still ca n ' t meet the loading precision completely
為了克服多餘力，本文採用了變結構的pid控制及位置補償、速度反饋等方法，對于主起全載和前起半載試驗，取得了良好的效果；而對於前起全載試驗，在進一步採用對給定載荷譜進行濾波，模糊控制等方法后仍不能完全滿足要求的性能指標，在加載試驗研製總結中簡單分析了其原因。
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