磁跡 的英文怎麼說
中文拼音 [cíjī]
磁跡
英文
magnetic track; track-
Prolate cycloid as another track of charged particle movement in magnetic field
長輻旋輪線是帶電粒子在磁場運動的又一軌跡Using mri, her team detected a network of abnormal memory traces in the brains of people with this condition
藉助磁共振技術,她在患有這個癥狀的病人腦中發現一個不正常的記憶痕跡的網路。Second, the imaging model built here has taken into account the tilt modulation, the hydrodynamic modulation, and current modulations of radar cross section. consequently, it has realized the imaging simulation of four kinds of wakes with the same imaging model. third, the orbital velocity of ocean wave was considered as the basic dynamic factor, and the imaging model calculates the influence on raw data by the wave m ovement according to the orbital velocity
該模型的主要特點是: ( 1 )它採用了三尺度復合表面模型的思想來計算海面的電磁散射,考慮了中等尺度波對紋波的進一步調製作用,彌補了傳統雙尺度模型的不足; ( 1 )它考慮了海浪的傾斜調製作用、流體動力調製作用和流場對雷達截面的調製作用,實現了用統一的模擬模型對四種艦船尾跡特徵進行成像模擬; ( 3 )它把海面長波的軌道速度作為基本的動態成分,並依此來考慮海面運動對sar回波信號的影響。The numerical computing methods of the equations involving the static electric - magnetic field, electronic motion in the static electric - magnetic field, and so on are detailed. the methods of the boundary disposal are introduced. the phenomenon of secondary electron emission has also been studied
介紹了數值計算方法,包括靜電磁場的數值計算、在靜電靜磁場中電子運動軌跡的數值計算、空間電荷密度的數值計算和空間電位分佈的數值計算;介紹了邊界處理方法。Film 35 mm ; photografic sound record, track position and slit image
35mm膠片.光聲錄音磁跡位置與隙縫影像We propose a novel controllable atomic beam - spiller based on the uccc and discuss the splitting mechanism of the guided atomic beam in the beam splitter from two aspects of the magnetic - field distribution and the trace of the guiding centers. the splitting ratio of the beam splitter can be adjusted by adding a homogeneous bias magnetic field along the y - direction, and the relationship between the splitting ratio and the additional bias field is analyzed
本文提出了一種採用在y方向上加一偏置磁場來實現分束比可控的新穎原子分束器,並從磁場分佈和導引中心軌跡兩個方面,詳細分析和討論了基於u -型載流導體所構建的原子分束器的分束機制。The pictures of that historic footstep and everything else about that and subsequence apollo moon landings, including flight data and astronaut health reading, were recorded on magnetic tape at three nasa ground tracking stations around the world
那張具有歷史意義的足跡照片和其他一切相關的,還有阿波羅號后來的登月活動包括飛行數據,宇航員的健康指標都被分佈在全球的美國宇航局的三個地面追蹤站記錄在磁帶上。In addition to pic method, the numerical computation method is used as a compensation for the study of the characteristics of electron beam. the two methods are used separately to attain the trajectory of axially - emitted electron beam in diode region and drift region, and the trajectory of radially - emitted electron beam with axial, azimuthal, as well as compounded axial and azimuthal magnetic field. three two - dimensional codes and two three - dimensional codes have been made out to compute the trajectories
本文特點之一就是採用粒子模擬和數值計算相結合的方法進行模擬計算,分別得到了軸向發射條件下電子在二極體區域和漂移區的軌跡,徑向發射條件下電子在角向磁場、軸向磁場、角向和軸向復合磁場中電子的運動軌跡,分別編制了三個二維電子軌跡計算程序和兩個三維電子軌跡計算程序,最後將粒子模擬和數值計算得到的結果進行了對比,得到了較為滿意的結果。Now a wire placed in a magnetic field and connected to a meter shows no sign of a current.
一根導線放在磁場當中再聯上一個電流計,未顯示出任何電流的跡象。Transverse track video recorders
橫向磁跡錄像機Control track duty
控制磁跡占空比Pilot frequency recording ; pilot frequency, running speed, track positions, magnetization
導頻記錄.導頻.運行速度.磁跡位置.磁化L yb - 7442 four - trace double - track recording and playing magnetic heads has won grade two award for science and technology advancement of shenzhen city
Rp - 7442四跡雙道錄放磁頭獲得深圳市科學技術進步二等獎Considering the system ' s wide speed range and ipm ' s switching frequency ' s top limit, the variable flux linkage locus structure control has been executed in the full speed adjusting range
考慮到系統調速范圍寬和逆變器開關頻率的限制,在全頻域採用分段變磁鏈軌跡結構的控制方法。Based on the theory creation of space voltage vector ' s polygonal flux linkage locus, freewill partition of the ideal flux circle is realized by the software method. furthermore, different polygonal flux linkage locus ' s fluent switching point is also found, which overcomes the motor " switching failure and improves the speed adjusting dynamic performance
在充分研究磁通軌跡法原理的基礎上,採用軟體方法實現了任意多邊形磁鏈軌跡的生成;並找出了不同磁鏈軌跡間的平滑切換點,解決了切換時的電動機失步問題,提高了系統轉速調節的動態性能。The dissertation deals in details with the basic principle of direct torque control. according to the faults of traditional direct torque control and the requirement of an induction motor ' s control strategy change the method of regulating stator flux to make its path approximate to a circle as possible as could. to get quickly torque control, use a three - value regulator
本論文介紹了電動機直接轉矩控制的基本原理,並根據傳統直接轉矩控制存在的缺點以及對電動機調速性能的要求,改變對定子磁鏈的調節方式,使定子磁鏈軌跡近似為一圓形,對轉矩採用三值調節器進行調節,以實現轉矩的快速調節。The accurate calculation of the input voltage and the compensation for the dc - offset error and the variation of the stator resistance are important factors in practical implementation of the integration since they can cause a drift in the stator flux linkage trajectory and furthermore deteriorate the quality of torque control
因此,輸入電壓的準確計算、直流漂移量的補償以及定子電阻變化的補償都是影響積分計算準確性的重要因素,這些誤差會導致定子磁鏈軌跡的偏移,進而降低系統轉矩控制的性能。In the control software, the object - oriented method is used for doing system analysis and study. furthermore, the message - driven mechanism is used in the control software research and design. the instantaneous zero vector inserting space vector pwm theory is adopted to control the permanent magnet synchronous machine as the driver motor in the control software
軟體採用面向對象的程序設計方法對系統進行分析與研究,將消息驅動機制應用於控制軟體的設計和開發之中,在控制軟體中採用瞬時零矢量插入磁鏈軌跡法(電壓空間矢量法)來控制永磁同步電機。According to the faults of traditional direct torque control and the requirement of an induction motor ' s control strategy, the author changes the method of regulating stator flux to make its path approximate to a circle as possible as could and put forward a new way to use a three - value torque regulator
本論文研究了異步電動機的數學模型,介紹了直接轉矩控制的基本原理,並根據傳統直接轉矩控制存在的缺點以及對電動機調速性能的要求,改變對定子磁鏈的調節方式,使定子磁鏈軌跡近似為一圓形。After the analysis of the state of converter switches, the voltage space vector is received. on the basis of hexagon stator flux trace method of traditional direct torque control, by changing the regulation of stator flux, hexagon and approximate round trace of stator flux can be got when using different voltage space vector. the fast regulation is realized when three - value regulator is used to adjust torque
通過對逆變器開關狀態的分析進而得到電壓空間矢量,並且論述了電壓空間矢量與轉矩和磁鏈之間的關系,使用兩點式調節方法對定子磁鏈進行調節,實現六邊形磁鏈軌跡和圓形軌跡方案,對轉矩採用三值調節器進行調節,以實現轉矩的快速調節。分享友人