磁場漏磁通 的英文怎麼說
中文拼音 [cíchǎnglóucítōng]
磁場漏磁通
英文
field leakage flux-
Ruichi " brandmagnetic pump is mainly made up of pumpbody, gears, magnetic combined bearing equiptment isolation cover, motor and so on. gear wheels joined with the inner magnetic steel are fixed in a hermetically sealed chamber which is made up of pumpbody and isolation cover. the motor powers the outer magnetic steel, the outer magnetic steel power the inner steel. gear sheels are made to try turn. thus dynamic hermetis seal is replaced by a static hermetic seal to get the result of importing medium wihtout leakages
「瑞馳牌」磁力泵泵體主件是由驅動和從動永磁場鋼杯組成磁性聯軸節外磁鋼和電動機相聯為主動件內磁鋼和葉輪相聯為被動件當電機啟動后通過磁力藕合驅動葉輪同步工作泵的結構要點以靜密封取代動密封使泵的過流部件完全處於密封狀態從而保證了介質和外界隔絕徹底解決了離心泵機械密封一直解決不了的跑、冒、滴、漏之弊病。Shielding schemes of computer vdu are suggested through transient electromagnetic scattering analysis. method of time - domain integral equations is used here. a new soft - tempest method is found to strengthen protection capability of electromagnetic information leakage
用時域積分方程法,通過瞬態電磁場分析推薦了計算機顯示器的屏蔽方案,提出soft - tempest技術的新措施以加強信息電磁泄漏防護; 4The influence of separating magnetic flux method of rotor with u ' s and tangential permanent magnet to the pole - to - pole leakage factor is analyzed by finite element method ( fem ), and given the rule of design
通過對pmsm進行電磁場求解,分析了u型結構和切向結構轉子磁路結構的隔磁措施對電機極間漏磁系數的影響,提出了設計準則。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。In order to enhance the measure precision and expand the using area of the existing oil pipeline mfl ( magnetic flux leakage ) detecting system to natural gas pipeline testing, detailed information of flux obtained by decreasing sampling time and space interval is needed
為了提高現有輸油管道漏磁檢測系統的檢測精度以及擴展系統的適用范圍使其適用於天然氣輸送管道的檢測,需要通過減小采樣時間間隔和空間間隔的方法以獲得更加完備的漏磁場信息。The main achievements are as follows : the theory models of defect mfl field are set up ; based on the magnetic dipole model and finite element model, the distribution of defect mfl field is simulated in the dissertation ; the component of flux density ( magnetic filed ) parallel to the surface of pipe is detected by a circumferential array of hall probes ; the factors including defect geometry parameters, defect surface angle and shape, pipe material, field intensity, vehicle velocity, background magnetization, operating pressure and remanent magnetization and so on influence the mfl signal characteristics
採用霍爾元件作為缺陷漏磁檢測傳感器,獲得管道軸截面漏磁場切向分量的漏磁信號;研究了缺陷外形尺寸、缺陷傾角和形狀、管道材質和磁化強度、檢測儀移動速度、管道背底磁場、管內壓力和剩磁對漏磁信號的影響。提出了各通道增益放大、各路漏磁信號偏離調整、波形微分、數字濾波和平滑等漏磁信號預處理方法;分析了等空間采樣的漏磁信號轉換為等時間采樣信號的必要性,研究了漏磁信號的小波去噪方法。Based on the analysis about the test requirements and the saturated magnetization of the armor plate, the excitation magnetic circuit satisfying the testing condition and a validation system are designed. because the geometric, of the magnetic leakage at the direction of the normal of the roundness fault has the feature of two peaks : a positive and a negative, using the linear regression and the software matlab, two regression equation are proposed : one is about the peak value of the magnetic leakage and the diameter and depth of the roundness fault ; the other is the distance between the two peaks and the diameter of the roundness fault. the result of the validation system proves that the two equations are valid, and an applied method using for quantificationally inspecting the roundness faults is proposed according to the two equations
根據實驗要求,通過對鋼板達到飽和磁化的必要性進行的分析,設計了符合試驗條件的勵磁磁路,並設計了一套實驗驗證系統;根據圓形缺陷法線分量漏磁場幾何圖形正負雙峰值的特點,採用線性回歸擬合的原理和matlab軟體及其統計工具箱中的相關函數,給出了圓形缺陷漏磁場幾何圖形的峰峰值與圓形缺陷的直徑和深度以及峰峰值間距與圓形缺陷直徑的兩個回歸擬合方程,並通過實驗驗證系統驗證了擬合方程的正確性,利用這兩個簡單實用的擬合方程,提出了一種工程定量檢測圓形缺陷的應用方案。According to the effective field expression which has been derived in former, the phenomenon that the tangential component of magnetic leakage field has maximum value and the normal component of magnetic leakage field acquires zero value at the stress concentration zone of positive magnetostriction ferromagnetism materials under the application of tensile stress and negative magnetostriction ferromagnetism materials under the application of compressive stress is explained theoretically through analyzing and discussing
根據所得到的地磁場中受力鐵磁性材料有效場表達式,通過分析討論,解釋了受拉力作用的正磁致伸縮鐵磁材料和受壓力作用的負磁致伸縮材料在應力集中處漏磁場切向分量出現最大值、同時法向分量為零值的現象。One kind of electromagnetic radiation leakage of computers is conducted emission, with radiation through power wires and signal lines ; the other kind thereof is due to that : magnetic fields produced by signal current of computer processors and displays in equipment may leak through the cable sleeves and be picked up by the current probes clamped on lines, and the signals received may be sent to the specially - made receiver for processing and restoration
計算機電磁波輻射泄漏一類傳導發射,通過電源線和信號線輻射;另一類是由於設備中的計算機處理機、顯示器信號電流產生的磁場可能透過外套泄漏出來,被卡在線上的電流探頭檢拾到。By magnetic field analysis for the stage, three formulas reached : one is magnetic road magnetic force calculational formula of magnetic levitation system that except flux leakage, the second is magnetic driving force calculational formula for open magnetic road dc linear motor, the third is magnetic flux density calculational formula for dc linear motor. these formulas make reference for design, analysis and control
本文對磁懸浮定位平臺進行了電磁場分析,推導出磁懸浮系統不計漏磁的簡單磁路、磁力計算公式和原理樣機所採用的開磁路直流直線電機推力及磁通密度計算公式,為設計、分析及控制提供參考。This dissertation concentrates on the difficult problems that the pipeline or pipe defects are not estimated or evaluated quantitatively, intelligently by mfl ( magnetic flux leakage ) inspection method. from the practical demand, theoretical analysis and experiments or testing, the mfl inspection technology of pipeline or pipe defects are explained, summarized in detail in the whole paper, at the same time, the relationship between the mfl field distribution, the mfl signal shape and the defect geometry or severity, the analysis of the mfl data and the compensation of influencing the relationship factors, signal feature extraction, intelligent recognition of defect parameters and so on are studied systematically
論文針對管道(鋼管)缺陷漏磁檢測定量化、智能化的難題,緊密結合檢測現場實際需要,通過理論分析和大量實驗,系統分析總結了管道(鋼管)缺陷漏磁智能檢測技術,並在缺陷漏磁場分佈以及缺陷漏磁信號與缺陷外形參數間的關系、缺陷漏磁信號分析、漏磁信號影響因素補償、缺陷漏磁場波形特徵提取和缺陷外形尺寸定量識別等方面進行了深入研究,主要成果和創新如下:引出磁偶極子模型近似分析常見缺陷漏磁場,針對磁偶極子模型的不足,將有限元方法應用到缺陷漏磁場分析,實現了常見管道樣本缺陷漏磁場的模擬。Flux leakage field
磁通泄漏場The relation between the dimensions and performance studied in this paper. the orientation to obtain better performance is given. from the electromagnetic field calculation, it finds out that the flux leakage in the side surface is large. under this direction, a additional magnetic motive force is given against the flux leakage
通過對橫向磁通永磁電機的電磁場分析計算,發現橫向磁通永磁電機轉子端面漏磁通占漏磁通比例很大,在計算結果的指導下採取了在漏磁通磁路中提供一個與漏磁磁勢相反的磁勢的方法來降低漏磁通取得了預期效果。However flux leakage is really exist, calculation through formular analytic method has more error, so electromagnetic field analysis is made by using finite element method ( fem ) in ansys7. 1 / multiphysics and ansys / emag programs. typical quantities of interest in a magnetic analysis are available such as magnetic flux density, magnetic field intensity, magnetic forces, power loss and flux leakage in the system of magnetic levitation. then gain the current in the coil which control levitation gap when the stage is stable
由於存在漏磁,用公式的解析法計算有很大的誤差,因此本文採用有限元法( fem )來計算磁懸浮系統磁場分佈,從而計算磁力,通過用ansys7 . 1軟體進行有限元電磁場分析計算,得到平臺穩定懸浮時電磁線圈所需電流、懸浮氣隙等控制參數,由於設計的磁懸浮系統為非軸對稱結構,採用2d磁場分析有一定的誤差,而採用3d電磁場分析更接近實際。分享友人