控制试验

• Abstract : by means of pot , field minispot experiments and analysis indoor , the effects of soybean specific fertilizer on soil enzymes activity and available nutrients were investigated in rotation , soybean continuous cropping system , respectively
  文摘:采用盆栽、田间小区控制试验及室内分析相结合的方法，研究了施用大豆专用肥对连作、轮作大豆土壤酶活性和有效养分的影响。
• With highest respective boundary pbl parameter scheme , we devise five test projects : control experiment and sensitive experiments without sensible heat flux , without latent heat flux , without sensible and latent heat flux , without terrain
  在高分辨率边界pbl参数化方案下设计5组试验方案，对几个个例风场进行模拟检验：控制试验、无感热试验、无潜热试验、无感热无潜热试验、无地形试验。
• In this thesis , a diesel / alcohol dual fuel injection experimental system controlled by pc is introduced firstly . this system is developed based on the current research and the advanced technology of hardware and virtual instrument
  本文在现有研究成果的基础上，针对这些研究工作所存在的不足，利用先进的计算机硬件技术和虚拟仪器软件技术，开发出一套可对柴油/酒精混合比例进行编程控制且在现有发动机上易于改造的柴油/酒精双燃料计算机控制试验系统。
• The results show that although there are somewhat systematic errors in the coupled model , the model simulates the basic features of seasonal cycle and interannual variability of sea surface height to the considerable extent , in order to examine the impact of indonesian through flow ( itf ) on the seasonal cycle and interannual variation of sea surface height , a sensitivity experiment is accomplished , in which the indonesian passage is closed fully in the coupled model
  结果表明，尽管耦合模式存在一定的系统误差，但仍然能相当程度上够模拟出海面高度季节和年际变化的基本特征。同时为检验模式中印度西亚穿越流( itf )对海面高度季节和年际变化的影响，本文还进行了印度尼西亚海道完全关闭的敏感性试验，与控制试验结果对比表明，印尼穿越流对季节变化的影响不大，但可以显著影响热带太平洋和印度洋年际变化的特征。
• On the basis of this , we selected rms as feedback variable and constructed the controller g : add this controller to the right of ion radial self - edlctric force equation like equation ( 1 ) . we simulated the motion of ion beam by using muti - paticle code ( partice - in - cell ( pic ) code ) . the results demonstrated that the beam halo of five different initial distribution is eliminated well under the same controller . the halo intensity of k - v distribution , water - bag distribution and parabolic distribution and be reduced to zero . in the case of 3 - sigma distribution and full gauss distribution , the result is agree with minimum limitation ( 10 " ) of halo intensity of factual high intensity accelerator
  在此基础上，选择a为控制变量，构造延迟反馈控制器g ： g （ s glrrms （ s ）一rms （ s ） （ 2 ）同（ l ）式一致，将此控制器函数加在粒子径向所受束自生场力方程的右边。利用多粒子数值模拟程序（ pic ）进行了控制试验。模拟结果表明，用同一个控制器和同一个控制参数即可实现五种不同初始分布情况下的束运一混饨的有效控制。
• This paper discuss the effect of roughness coefficient on the tropical cyclone landfalling process using a idealized tc model developed from psu / ncar mm5 in the condition of quiescence and f - plane atmosphere . in order to understand the different influences of land and sea surfaces in the tc landfalling process , two kind of experiments had been designed : one for settled tc , the other for movable tc , and each kind consists four tests . the result indicates that the distribution of wind , precipitation , warm core and intensity of tropical cyclone has been changed obviously due to the effect of difference between the land and sea
  本文利用bogus技术在psu / ncarmm5中加入了理想热带气旋初始涡旋，在f -平面和无环境流场的理想情况下，设计了两组静态和动态试验，通过控制试验和不同粗糙度的登陆试验，分别从空间和时间上探讨了理想热带气旋的登陆规律和分布特征，特别研究了边界层中热带气旋中心区域风场的垂直细致结构，并初步分析了其物理机制。
• In order to adapt well to the development of the overhaul with the locomotive , the article introduces a digital auxiliary motor test - bed based plc and touch screen technology , being an updated product of routine manual switch and relay - controlled test - bed , it can accomplish the functions such as testing , checking and other manipulations to d . c engine , a . c engine and phase converter through hmi - touch screen
  为适应机车检修水平现代化的发展步伐，本文研究设计了基于plc和触摸屏技术控制的机车数字化辅机试验台，作为常规的手动开关和继电器控制试验台的升级换代产品，通过人机界面( hmi ) ? ?触摸屏完成对直流电机、交流电机、劈相机的试验检测操作。
• In order to test resistance parameters and general properties of the idler automatically and continuously , by using " the rotating inertia method " to construct mechanical drive control system , theory of realizing double parameters measurement of the idler was discussed , and by using pressure transducer parts to control the experiment pressure , method of examining the idler was also put forward
  摘要为实现对托辊阻力参数及综合性能的自动化、连续化的测试，论述了利用理论力学中“转动惯量法”构建机械传动控制系统，实现托辊阻力双参数测量的原理，阐明了采用压力传感器部件控制试验压力，达到托辊产品在规定压力下跑合要求的检测方法。
• The system takes both advantages , the former is fast and convenient characteristics of dasylab in building a control and measure system , and the latter is the powerful program function and abundant control button of labwindows / cvi . it can acquire , analysis and save the real - time data in the experiments of the lim and electromagnet meanwhile , it can control the start / stop of the lim . electromagnet and dc motor , as well as it can control the change of the voltage and frequency of the lim . the exciting windings voltage and rotor windings voltage of the dc motor
  整个测控系统利用了dasylab组建采集分析系统的简单快捷和labwindows cvi丰富的控件与强大的编程功能，将两者的优点有机的结合起来，可以完成直线电机及电磁铁试验中的数据采集、分析、存储，并且可以控制试验中直线电机、电磁铁、直流电机的启动与停止，对直线电机绕组电压、直线电机绕组电压频率、直流电机励磁绕组电压、直流电机电枢绕组电压、电磁铁绕组电压的大小进行控制。