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temperature ferromagnetism. The Experiments showed that the magnetization saturation rose with the increase of Cu content. For the low Cu content sample, the hysteresis loop was slightly tilted which... and there were many different local environments for magnetism. The measured hysteresis loop and temperature dependence of magnetization were overall performance of the magnetism coming from a wide......
al. Transportable performance of modified unclassed tailings filling slurry based on loop test[J]. The Chinese Journal of Nonferrous Metals, 2021, 31(2): 520-529. DOI: 10.11817/j... on loop test ZHENG Bo-kun1, 2, YAO Wei1, 2, HUANG Teng-long1, 2, ZHANG Ling-yun1, 2, YIN Xu-yan1, 2 (1. Changsha Mine Research Institute Co., Ltd., Changsha 410012, China; 2. National Engineering......
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. The feasibility and significance of the method were revealed based on the simulation results.Key words:imaginary component vertical to magnetic field; loop center; numerical simulation; frequency domain......
量法可消减基底形状误差的影响.对不同内径及壁厚的管坯进行了喷射实验,喷射高度累积误差低于5%,较好地满足了大壁厚管坯制备对稳定的喷射高度的要求. 关键词:管坯;闭环控制;往复式喷射沉积;喷射高度;沉积层厚度;在线测量 中图分类号:TG 146 文献标识码:A Closed loop control of spray...-loop control for spray height of the nozzle was studied. The control system of spray height consists of executive mechanism of tundish lift, online measurement of deposit layer thickness and control......
, Guangzhou 510006, China) Abstract: The velocity loop, as the intermediate loop of the brushless direct current motor (BLDCM) servo system, has the direct effect on the control precision and response speed. Due to the closed-loop transfer function of velocity loop is related to the intermediate controller and it’s difficult to convert the transfer function of velocity loop to state space dynamical......
文献标志码:A 文章编号:1672-7207(2015)09-3217-07 Double closed-loop nonlinear modeling and analysis... closed-loop nonlinear Simulink model was established based on the deduction of mathematical model accounting for rotor magnetic field harmonics. The model was also compared with the open-loop model......
冷轧带钢连续退火模拟实验机张力控制系统崔席勇1,花福安1,张殿华1,刘相华1,王国栋1(1.辽宁省沈阳市东北大学轧制技术及连轧自动化国家重点实验室)摘 要:冷轧带钢连续退火模拟实验机采用液压系统实现试样张力和电极位移的双闭环控制.根据设备的功能要求和控制效果的稳定性要求,设计开发出一套张力控制系统.该控制系统实现了张力闭环和位移闭环之间的平稳过渡,实际应用效果良好,达到了冷轧带钢连续退火模拟实验机张力控制系统的性能指标.关键词:连续退火模拟实验机; 张力控制系统; 直接张力控制; PID闭环控制;......
exhibits two well-separated hysteresis loops when the field is applied perpendicular to the film plane. The minor hysteresis loop corresponding to the free layer shifts toward negative direction... measurements of the Co/Pt multilayers were performed to select the reference and free layers. The selection criteria are square magnetic hysteresis loops, weaker current shunting effect, and proper......
,the coercivity with perpendicular anisotropy could be as high as 6735 Oe,and the squareness ratio of the hysteresis loop was almost equal to 1.关键词:......