例句與用法

1. The paper extracts the limit , proves the inquation and confirms existence of roots , skillfully using langrangian middle value theorem
   摘要應(yīng)用拉朗日中值定理求極限，證明不等式以及確定方程的根。
2. This thesis presents an effective way to design pid controller through a combination of adverse deduce and genetic algorithm . the relationship between pid parameter and the root of the characteristic equation of the closed loop control system has been found out directly
   本文直接找出pid參數(shù)與閉環(huán)控制系統(tǒng)的特征方程的根之間的關(guān)系，只要使特征方程的根在z平面的單位圓內(nèi)任意取值，然后再求出相應(yīng)的pid參數(shù)，則閉環(huán)控制系統(tǒng)必然是穩(wěn)定的。
3. As long as the root of the characteristic equation is within the unit circle of z - plane and the corresponding pid parameter is got , the closed loop control system is sure to be stable . although the root of the characteristic equation can vary within the unit circle of z - plane , different value may affect the control property differently . therefore , it is better to optimize the root , here the optimizing method is carried out by genetic algorithm
   本文所采用的這種確定pid參數(shù)的方法，雖然可以使特征方程的根在z平面的單位圓內(nèi)任意取值，但各種取值情況對變風(fēng)量空調(diào)系統(tǒng)的控制品質(zhì)的影響卻不同，因此，要對各種特征方程的根的取值情況進(jìn)行尋優(yōu)，本文采用遺傳算法對特征方程的根進(jìn)行尋優(yōu)，從而使控制器的參數(shù)得以優(yōu)化。