| 1. | Analyses on seepage control efficiencies of cut - off walls an d relief ditch in the levee engineering of niutun river
牛屯河堤防工程防渗墙及减压沟渗控效果分析 |
| 2. | The results showed that the control efficiency of 22 % poisonous chlorine cream was the highest and fuhejianxu was the lowest
试验结果表明： 22 %毒?氯乳油1500倍液防治效果最好，复合楝素1000倍液防治效果最差。 |
| 3. | 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
误差传感器是主动控制系统中的关键元件之一，它测量所得信号的精确与否对整个控制效果有很大影响。 |
| 4. | 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
理论分析和仿真结果都表明该系统对带钢恒张力控制具有很强的鲁棒性和实时性，即使在变工况下（大范围变负荷下）也保持了良好的控制性能。 |
| 5. | 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
摘要分析了沙曲矿14201工作面的瓦斯涌出特点，对倾斜高抽巷治理瓦斯的工艺技术参数进行了优化，观测了高抽巷治理瓦斯的效果。 |
| 6. | 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
作为一类非线性、多变量且很难辨识的受控对象，地效飞机应采用更加复杂的控制律和信息? ?控制综合系统，以最大限度地保证低高度的飞行安全和操控效率。 |
| 7. | ( 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 )主要工作之二是探讨了合成射流技术的潜在应用，应用合成射流控制技术，可以大大提高低速燃气氧气的掺混程度以及加强换热，合成射流的控制效果与激励器的工作情况密切相关。 |
| 8. | 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
本文还将现代控制理论与matlab的simulink动态仿真软件包相结合，将其应用于弹性支承平台结构的主动控制中；建立了弹性支承平台结构主动控制理论的力学模型和状态空间内的运动方程；应用经典线性最优控制算法对弹性支承平台结构在简谐荷载作用下的动力响应进行闭环控制；分别从理论和数值计算两个方面讨论了状态权函数矩阵q和控制权函数矩阵r的不同取值对控制效果的影响。 |
