Analyses on seepage control efficiencies of cut - off walls an d relief ditch in the levee engineering of niutun river 牛屯河堤防工程防滲墻及減壓溝滲控效果分析
The results showed that the control efficiency of 22 % poisonous chlorine cream was the highest and fuhejianxu was the lowest 試驗(yàn)結(jié)果表明: 22 %毒?氯乳油1500倍液防治效果最好,復(fù)合楝素1000倍液防治效果最差。
Error sensor is the main part of active control system , and the whole active control efficiency depends much on the message measured by error sensors . therefore , getting exact measured message is very important 誤差傳感器是主動(dòng)控制系統(tǒng)中的關(guān)鍵元件之一,它測(cè)量所得信號(hào)的精確與否對(duì)整個(gè)控制效果有很大影響。
Theoretical analysis and simulation results show that the controlled system has stronger robustness and high - speed for constant tension control , and it has better control efficiency even under bigger vary loads 理論分析和仿真結(jié)果都表明該系統(tǒng)對(duì)帶鋼恒張力控制具有很強(qiáng)的魯棒性和實(shí)時(shí)性,即使在變工況下(大范圍變負(fù)荷下)也保持了良好的控制性能。
The characters of methane emission at the working face no . 14201 in shaqu coal mine were analyzed , the technical parameters to control methane by incline high - position alley pumping were optimized , and its control efficiency was investigated 摘要分析了沙曲礦14201工作面的瓦斯涌出特點(diǎn),對(duì)傾斜高抽巷治理瓦斯的工藝技術(shù)參數(shù)進(jìn)行了優(yōu)化,觀測(cè)了高抽巷治理瓦斯的效果。
As a class of nonlinear multivariable objects , which characteristics is difficult to identify , the wing - in - surface effect crafts need adopt more complicated control laws and integrated information - control systems to ensure the flight safety and control efficiency 作為一類非線性、多變量且很難辨識(shí)的受控對(duì)象,地效飛機(jī)應(yīng)采用更加復(fù)雜的控制律和信息? ?控制綜合系統(tǒng),以最大限度地保證低高度的飛行安全和操控效率。
( 4 ) the potential applications of the synthetic jet technology are studied . it shows that the synthetic jet actuators can significantly enhance fuel / oxygen mixing and heat transfer , and the synthetic jet actuators " working condition determines the controlling efficiency ( 4 )主要工作之二是探討了合成射流技術(shù)的潛在應(yīng)用,應(yīng)用合成射流控制技術(shù),可以大大提高低速燃?xì)庋鯕獾膿交斐潭纫约凹訌?qiáng)換熱,合成射流的控制效果與激勵(lì)器的工作情況密切相關(guān)。
In the last , the modern control theory and simulink in matlab have been integrated together , and it has been applied in active control of the platform structure elastically supported ; a mechanical model and an equation of motion in state space have been established . based on coc , dynamic response of the platform structure elastically supported has been studied under simple harmonic load ; the influence of different values of weight function to the active control efficiency of the structure has also been discussed 本文還將現(xiàn)代控制理論與matlab的simulink動(dòng)態(tài)仿真軟件包相結(jié)合,將其應(yīng)用于彈性支承平臺(tái)結(jié)構(gòu)的主動(dòng)控制中;建立了彈性支承平臺(tái)結(jié)構(gòu)主動(dòng)控制理論的力學(xué)模型和狀態(tài)空間內(nèi)的運(yùn)動(dòng)方程;應(yīng)用經(jīng)典線性最優(yōu)控制算法對(duì)彈性支承平臺(tái)結(jié)構(gòu)在簡(jiǎn)諧荷載作用下的動(dòng)力響應(yīng)進(jìn)行閉環(huán)控制;分別從理論和數(shù)值計(jì)算兩個(gè)方面討論了狀態(tài)權(quán)函數(shù)矩陣q和控制權(quán)函數(shù)矩陣r的不同取值對(duì)控制效果的影響。