電磁速度計 的英文怎麼說
中文拼音 [diàncísùdùjì]
電磁速度計
英文
electromagnetic velocity metre- 電 : Ⅰ名詞1 (有電荷存在和電荷變化的現象) electricity 2 (電報) telegram; cable Ⅱ動詞1 (觸電) give...
- 磁 : 名詞1. [物理學] (磁性; 能吸引鐵、鎳等的性質) magnetism 2. (瓷) porcelain; china
- 速 : Ⅰ形容詞(迅速; 快) fast; rapid; quick; speedy Ⅱ名詞1 (速度) speed; velocity 2 (姓氏) a surna...
- 度 : 度動詞[書面語] (推測; 估計) surmise; estimate
- 計 : Ⅰ動詞1 (計算) count; compute; calculate; number 2 (設想; 打算) plan; plot Ⅱ名詞1 (測量或計算...
- 電磁 : [電學] [物理學] electromagnetism電磁安(培) abampere (電磁系電流單位); 電磁泵 electromagnetic ...
- 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. (快慢的程度) speed; rate; pace; tempo
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The inversion results of synthetic magnetotelluric sounding data are ideal, which indicates that the algorithm possesses advantages of expediting convergence, avoiding earliness and improving precision, and can be used in mt data analysis
對各種類型的大地電磁測深理論曲線進行計算,結果表明:採用實數編碼混合遺傳演算法進行反演具有收斂速度快、解的精度高和避免出現早熟等優點,可用於大地電磁資料解釋。Finally, because high - speed power solenoid valve is one of the most important executive parts in the electronic control diesel engine and the performances of diesel engine are strongly related to the solenoid valve, the response performance of the solenoid valve is investigated. the response performance of the solenoid is influenced by many factors, such as driving voltage, electric driving unit etc. in order to have high excitation voltage and in low maintaining voltage, a high - low voltage electric driving unit is designed, and in order to make the solenoid valve close more rapidly, an active free - wheeling circuit and a bootstrapping circuit are designed in the electric driving unit, too. in the high - low electric driving unit, high voltage and low voltage are supplied by the dc - dc device and by the accumulator respectively
高速強力電磁閥的響應性能除了與閥本身的結構和材料有關外,與驅動電壓、驅動電路的設計密切相關,本文通過分析,首先開發出一種高低壓驅動電路,高壓電源是山升壓式dc - dc原理獲取的,低壓由蓄電池本身提供,實現高壓強激和低壓維持的功能,電路中採用有源續流電柴汕機中卜軌知介系統的設訓及其七川j敝略的叭究路進行續流,加誣了電磁閥的關閉速度;採用自舉吐路,降低了場效應管對驅動電壓的要求。Study on ultra - low frequency vibration sensor by using magnetoelectric speedometer
用磁電式速度計實現超低頻振動傳感器的研究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。Nowadays with the booming development of microelectronic technique, the functions of the components of machinery, electricity, magnetism, optics, acoustics and thermotics have been improved rapidly. and the micromation of components, the integration of electronic equipments, the worse working environment, the increasing requirement and emi, all of these make the structural design of electronic equipments more and more important
在微電子學高度發展的今天,促使機、電、磁、光、聲和熱等元器件功能飛速提高,隨著元器件微型化,電子設備趨向集成化,再加上一些日趨惡劣的工作環境,各種使用要求的提高,空間電磁環境的干擾,以及由於裝填密度高,產生的內在干擾等,使得電子設備的結構設計變得越來越重要。The subject of this thesis is to study ironless moving coil linear permanent magnet synchronous motor and the major works in this thesis are summarized as follows : 1 ) two analytical formulas are derived by concentrated current method and distributed current method to determine the magnetic field due to pm, based on the current model of pm. besides, two method ( magnetic charge method and solution by laplace equation method ) are also introduced with comparing their advantages and disadvantages. then the effects of the motor parameters on the flux distribution are discussed
本文對空芯動圈式直線同步電動機進行了深入細致的研究,內容包括: ( 1 )採用電流模型推導出兩種計算永磁磁極二維氣隙磁場的解析公式(集中電流法、分佈電流法) ,同時介紹了兩種永磁電機氣隙磁場計算方法(磁荷法,直接求解拉氏方程法) ,分析各種方法的優缺點,討論電機參數對氣隙磁密的影響; ( 2 )介紹了單層同心繞組的布置方式,根據安培定律推導出空芯動圈式直線永磁同步電動機的靜推力計算公式,分析靜態力?位移特性; ( 3 )建立空芯動圈式直線永磁同步電動機動態模擬模型,模擬不同驅動方式下電動機起動、穩態運行時電磁力、速度、位移的變化情況。A precision force banacing accelerometer for ineration navigation application is developed. the resolution, low - sensitivity threshold and high thermal stability are considered as design parameters. in order to guarantee a low - sensitivity threshold while maintaining robustness against shock, push - pull type long flexures are used in this paper. to improve thermal stability, this paper discusses the use of electromagnets as a magnetic fied source. the silicon pendulum assembly and modified inducance type pick - up is also developed to reduce assembling procedure. the measure range of accelerometer is 0 - 70g
加速度計的解析度、靈敏度閾值和高的熱穩定性是設計時主要考慮的參數。本論文中使用推?挽式長撓性結構來保證低靈敏度閾值,同時保證抗振魯棒性。為了提高熱穩定性,本文中討論了利用永久磁鐵作為磁場源;微加工技術被引入擺組件的結構設計和利用力矩線圈作為激勵線圈來簡化電感式的檢測裝置。Experimental techniques for simulating cavity decoupling explosion in laboratory wear developed, which include a center initiating explosive charge designed in shape of mini - spherical with yield equivalent to 0. 125 ~ 8. 00gtnt, circular electromagnetic particle velocity gages and aluminum bar strain gages measurement techniques, spherical divergent stress waves generator. large amount of tamped and cavity explosion experiments had been made in granite, soil, cement mortar and water media environment, respectively
本文建立起了包括中心起爆的0 . 125 8 . 00gtnt微型球形炸藥裝置的研製、圓環形電磁粒子速度計及鋁桿應變計測試技術和球形發散應力波實驗裝置等在內的實驗室微型藥量空腔解耦化爆模擬技術,並在花崗巖、土、水泥砂漿和水等介質中進行了大量的填實和空腔爆炸實驗研究。General specifications for speed sensor of naval ships
艦船用電磁計程儀速度傳感器規范In the paper, a speed estimator based on artificial neural network is designed according to the principle of direct torque control, the speed estimator is optimized by genetic algorithm, and the parameters of pid speed adjuster is also optimized by genetic algorithm. a stator linkage and torque observer based on stator resistance estimator using fuzzy neural network is also designed. eventually, the intelligent control of direct torque control system is implemented
本文根據異步電動機直接轉矩控制原理,在應用人工神經網路進行速度辨識的基礎上,利用遺傳演算法對神經網路速度辨識器進行了優化設計;運用遺傳演算法對pid速度調節器的結構和參數進行了整合;在採用模糊神經網路對電機定子電阻辨識的基礎上,進行了定子磁鏈及轉矩的觀測,為最終實現無速度傳感器直接轉矩控制系統的智能控制創造了條件。To realize nolinear excitation controller, it must be improved that the disposal speed of nolinear excitation control " s signal. with analyzing and comparing all kinds of microcomputer excitation controller, a new microcomputer excitation control scheme is offered that is based on dsp controller while the cpld chip is utilized for realizing the function of pulse trigger. it is described in detail that the method of realizing controllable silicon digital logic by verilog hardware describe language and the designed digital pulse trigger " s veracity was validated by digital simulation
論文進一步針對非線性勵磁控制要求信號處理速度高、信息量大的特點,在對目前微機勵磁控制器分析基礎上,提出採用dsp控制器晶元作為核心處理器的微機勵磁控制器的解決方案,運用復雜可編程邏輯器件cpld晶元實現可控硅同步脈沖觸發單元,並簡要說明了verilog硬體描述語言和數字脈沖形成邏輯的方法,通過電路數字模擬對所設計的數字觸發單元進行了驗證。The conclusion is that inductive electromotive force, gotten from sensor with the distribution regularities of weighting function, is proportional to the average flow velocity in pipe and is not relevant to the distribution of flow velocity when flow velocity is non - central symmetry with the central axis. so electromagnetic flowmeter could solve the question of high accuracy in principles
得出按權重函數分佈規律的傳感器,在流速非中心軸對稱分佈時,感應電勢僅與平均流速呈正比,而與流速分佈無關的結論,從而從原理上解決電磁流量計了高精度測量的問題。From the experiments we can get a conclusion that with the characteristics of working well, sample circuit and light path, rated current error and phase error fulfilling accuracy class 0. 2, and respond speed and bandwidth superior to old electromagnetic current transducer, the hybrid current transducer we designed is practical
實驗證明,採用這種方法設計的混合式光纖電流互感器工作可靠、電路和光路簡單,比差和相差都能夠很好地滿足國標中對0 . 2級電流互感器的要求,動態響應速度、帶寬等性能都明顯優于傳統的電磁式電流互感器,已經進入實用化階段。Uniform and compact plzt and sno _ 2 ceramic targets, which diameter were 212mm and 221mm, respectively, had been successfully fabricated. ( 2 ) a rotating magnetic field rf magnetron sputtering system had been designed and set up, which showed high utilization efficiency of target, high films uniformity, and high deposition rate, etc. ( 3 ) the plzt and sno _ 2 thin films were investigated by afm, xrd, sem, and spectral photometer. the optimized processing parameters of preparing these films had been found
並以此為基礎分別制備了緻密、均勻、平整、直徑為212mm的plzt和221mm的sno _ 2陶瓷濺射靶材; ( 2 )為克服現有磁控濺射設備的不足,提出了一種新的磁控濺射方案,採用該方案的設備具有:靶材利用率高、鍍膜均勻、成膜速度快等特點; ( 3 )運用afm 、 xrd 、 sem以及雙光路分光光度計等分析手段對plzt和sno _ 2薄膜的微結構和性能進行研究,找到了制備plzt電光薄膜和sno2透明電極材料的最佳工藝條件。Especially, analyze qualitatively the effect that the cathode magnetic field angle contributes to beam ratio and prove it by calculation
特別的是,文章中定性分析了陰極磁場角對電子注速度比的影響,並通過計算獲得證明。Aiming at the uncertainty brought by the rotating inertia and motor torque coefficient during the field weakening process, the mixed sensitivity robust controller based on inner mode principle is designed
在此基礎上,針對實際直流電機速度控制系統弱磁調速過程中存在的電機轉矩系數變化和轉動慣量等因素引起的參數不確定性特性,應用內模原理,設計了混合靈敏度魯棒控制器。In this thesis, based on a digital signal processor tms320f240, a controller for pmsm is researched an designed. we analyzes the mathematics model of pmsm, researchs vector control of pmsm and space vector pwm, discusses the controller of position, speed and current, designs the mrfas position controller, pid speed controller and pid current controller, sets up pmsm ac servo control system, designs dsp controller, and develop the corresponding sofeware. at last, the designed controller is simulated under matlab / simulink, and the results are gived
分析了水磁同步電機的數學模型,研究了永磁同步電機的矢量控制方法和空間矢量脈寬調制原理,討論了位置環、速度環和電流環的控制方法,設計了模型參考模糊自適應位置控制器、 pi速度器和pi電流控制器,組建了永磁同步電機交流伺服控制系統,設計dsp控制器,並開發了相應的軟體。最後在matlab simulink環境下對系統進行了動態模擬,並給出了模擬結果。To proceed with induction motor speed control task, by using the passivity of motor rotor flux subsystems, a clear and simple design for the speed control systems with inner current - loops is presented
摘要利用電機轉子磁鏈子系統的無源性,給出帶電流內環速度控制系統的一種簡明設計,以達到控制感應電機速度之目的。The main module of sensorless pmsm vector control such as voltage sensing, current sensing, smo rotor position estimation, speed calculation, generation of sine and cosine, vector coordinate transformation, pi regulators, svpwm vector modulation are all accomplished in the pwm interrupt service routines
永磁同步電機無位置傳感器矢量控制的主要模塊如電壓采樣、電流采樣、滑模轉子位置估算、速度計算、正餘弦值生成、矢量坐標變換、比例積分調節器、空間電壓矢量脈寬調制等都是在pwm中斷服務子程序中完成。Electromagnetic flowmeter, which is based on faraday ' s induction low, is widely used for the measurement of flowrate of conductive fluid in pipes
電磁流量計是基於電磁感應定律的速度式流量計。以往的電磁流量計在0分享友人