例句與造句

1. In this dissertation , a kind of linear time invariant systems with unmodeled dynamics and nonlinear uncertainties are considered by using backstepping approach and variable structure control algorithm . also another kind of linear time varying systems are studied based on the same method
   本文主要利用backstepping方法與變結(jié)構(gòu)控制方法，研究了有未建模動態(tài)及不確定非線性項的線性時不變系統(tǒng)，以及輸入通道帶有干擾的線性時變系統(tǒng)的控制器設(shè)計問題
2. The current control approaches are based on frequency domain methods such as pid control which assumes linear time invariant system dynamics . the advantages of these approaches are simplicity and ease of stability and robustness analysis . however , the decrease in performanc e and poor efficiency translates to additional payload and cannot meet the demand of current spacecraft control
   當(dāng)前飛行器主要的控制方法是基于近似時不變線性系統(tǒng)的頻域分析法(如pid控制) ，這種方法的優(yōu)點是簡單且易于穩(wěn)定性和魯棒性分析，但它所達到的低性能和低效率卻轉(zhuǎn)化成了飛行器控制過程的附加載荷，還遠不夠滿足當(dāng)前飛行器控制的要求。
3. It's difficult to find linear time invariant system in a sentence. 用linear time invariant system造句挺難的