磁通量密度 的英文怎麼說
中文拼音 [cítōngliángmìdù]
磁通量密度
英文
density, magnetic flux-
The various initial distributions of magnetic helicity density and the transportation of magnetic helicity flux may lead to various evolutions of magnetic helicity density in the neutral sheet region, and could result in the formation of various magnetic structures
不同的初始磁螺度密度分佈和磁螺度通量輸運,可以引起中性片區域磁螺度密度分佈的不同演化,從而導致具有不同拓撲位形磁結構的形成。From the model, we can solve and gain the values and change orders of charging current, charging voltage, discharging current, discharging voltage and inductive current. after that, the electromagnetic fields can be created from two circuits " currents, and their magnetic rector and flux can be simulated from ansys solver
用ansys multiphysics模塊求解出充電電流、充電電壓、放電電流、放電電壓和感應電流以及這些參數隨時間變化的規律:然後利用兩個迴路的電流耦合出電磁場,並模擬出磁矢量、磁通密度。And the subroutine is developed to add the periodic condition in the commercial 3d fem software. 3d electromagnetic field analysis is done to analyze the magnetic flux distribution in the tfpm. base on the field analysis, the mathematical model is given
採用簡化的三維電磁場計算方法對橫向磁通永磁電機內部磁通分佈進行了研究,計算了各部分的磁通密度分佈和漏磁通的走向,得到了電機的空載漏磁系數及空載反電動勢以及主要的漏磁通分量。Both of the two ways can reach fb5b standard of tdk company. the coercive force of strontium permagnetferrite can be improved when a12o3 or cr2o3 was added to caco3 - sio2 or caco3 - hbo3 multi - additives. ( 4 ) comparing with normal caco3 and sio2, the nano caco3 and sio2 improve the magnetic. for the nano caco3 and sio2 have high chemical activations and excellent distribution, the density of permagnetferrite can be improved and the sinter temperature of it can be reduced
納米caco _ 3 、 sio _ 2與普通caco _ 3 、 sio _ 2加入相比,鍶鐵氧體永磁獲得的最佳磁性能高,獲得最佳磁性能的添加量范圍變寬,即納米caco _ 3 、 sio _ 2提高了磁性能的穩定性,有利於大生產時鍶鐵氧體永磁的磁性能的穩定,對生產有重要的指導四川大學碩士論文意義;由於納米caco3 、 510 :分佈更均勻,具有高的化學活性,降低了銘鐵氧體永磁的最佳燒結溫度,提高了銘鐵氧體永磁的燒結密度,因而增大了caco3 、 510 :添加劑對銘鐵氧體永磁的改性效果。Through the analyses of electromagnetic system of configuration of hollow metal cylinder by electromagnetic vector potential, an eddy current field math model is built by triangle cell, this article has researched power frequency to eddy current density, permeation depth and the effect of skin effect
文中通過對一個空心金屬圓筒結構的電磁系統進行分析,以電磁場矢量位有限元法為基礎對磁場強度、渦流密度進行了計算求解,採用三角形單元建立了渦流場數學模型,研究了電源頻率對渦流密度、透入深度及集膚效應等場量的作用影響。Abstract : one of the unsolved problems of the high power application of high temperature superconductors is how to lower the energy dissipation induced by flux motion. due to the extremely high anisotropy, small coherence length and weak pinning potential, the mixed state phase diagram which is tightly related to the flux dynamics becomes very complicated. a brief account is given of the field induced crossover of criticalities of energy dissipation, which has been observed in our recent sensitive electromagnetic measurement
文摘:高溫超導體在強電方面應用的關鍵問題是如何克服磁通運動所造成的能量損耗.由於存在極強的各向異性、短的相干長度和小的磁通釘扎勢,因此與磁通運動緊密相關的混合態相圖變得很復雜.文章綜述了根據一系列靈敏的電磁測量所觀察到的磁場誘導的能量耗散行為的轉變Specifications for magnetic flux density and electric field strength meters - 10 hz to 3 khz
磁通量密度和電場強計的規格. 10hz - 30khzThe contact design provides two areas with nearly the same axial magnetic flux density distribution ( by amount ), i. e. two areas with equal conditions are given
該觸頭設計提供了兩個縱向磁通量密度分佈(數值上)基本相同的區域,也就是說,給出了兩個條件相同的觸頭區域。In order to realize flux feedback control, the request of air gap flux density measurement is studied. using the 3d magnetic field analysis software, how and where to install the magnetic field sensors have been discussed. then two magnetic fields measuring methods have been chosen : the hall effects measurement and the electromagnetic induction method
為實現磁通反饋控制,分析了懸浮磁場對磁通密度測量的要求,利用三維磁場分析軟體對磁場測量元件的安裝方式與安裝位置進行了分析,選擇了兩種磁場測量方法:霍爾效應法與電磁感應法,並分別設計了測量及信號放大、濾波電路,實現了懸浮磁場的測量。Remarkably, the temperature must be limited between softening point and solidification value, at which the bond can get perfect fluidity and stickiness. effects of bond content and pressure on magnet product during heating - pressing process are the same with effects during common - pressing process. fourthly, it is more than 250 hours before magnet is eroded when it is coated with lacquer by way of cathode electrophoresis
溫度對溫壓效果影響明顯,應當選擇在粘結劑軟化點以上、固化反應前的某一點,保證粘結劑具有適當的粘度和良好的流動性;與普通壓制工藝相同,溫壓工藝制備的粘結磁體密度和磁性能均隨壓制壓力的增大而提高,磁體性能和磁粉體積分數隨粘結劑含量變化的規律一致。In single magnet modeling, from the air gap magnetic - flux density, single magnet linear model which take the flux density as the state variable is obtained, and used the fitting formula which the magnetic field analysis had obtained to revise the model parameters
在對單鐵的建模中,從氣隙磁通密度的角度出發,得到了以磁通密度為狀態變量的單鐵線性模型,並採用磁場分析得出的擬合公式修正了模型參數。At first, the interactions of hts permanent magnet and applied field are studied, that is the levitation force of ybco bulks over the ndfeb guideway and the influences of the applied field to the hts permanent magnet. secondly, the pulsed field magnetization properties of ybco bulks are studied. at last, the influence of the sample ' s thickness, shape as well as the density to the levitation force over the ndfeb guideway and the trapped flux of ybco bulk are studied
文中主要研究了高溫超導永磁體在外場下的受力狀況以及外場對其內部磁通量的影響、高溫超導ybco塊材在不同脈沖場下的俘獲磁通特性以及超導體塊材自身的厚度、形狀、密度等參數對其在外場下受到的懸浮力和俘獲磁通的影響。分享友人