exciting voltage 中文意思是什麼
exciting voltage
解釋
激發電壓-
Although this book deals, in the main, with the now well established techniques of analysis in conventional tem, a brief treatment is also given of further techniques of defect analysis such as high voltage electron microscopy ( hvem ) and scanning transmission electron microscopy ( stem ) this treatment is by no means detailed but is included to show that the subject is still developing in an exciting and challenging way
雖然這本書主要講述目前公認的常規tem分析技術，對于進一步的缺陷分析技術比如高壓電子顯微鏡（ hvem ）和透射電子顯微鏡法（ stem ）的簡單的處理也是有的，但是這種處理並不詳盡，只是列舉了在令人振奮和富有挑戰性的發展中課題中暴露出來的問題。 -
This paper include the following parts. firstly the sine exciting - voltage is guaranteed by direct digital synthesize technology ; secondly the digital output of cos ( 9 ) and sin ( 9 ) are generated by microcontroller ; thirdly the two voltage signals which are the product of the two former signals gained by the multiplying d / a converter, being filtered and amplified, have constant frequency, and one amplitude has sine function relationship of with the input angle, and the other amplitude has cosine function relationship of with the input angle ; finally the two signals are acquired and analyzed by relative instrument and software
主要由以下幾部分組成：用數字頻率合成技術（ dds ）產生正弦激勵電壓信號u _ msin （ t ） ；用單片機產生幅度的數字量輸出sin （ ）和cos （ ） ；用乘法型d a轉換器實現激勵電壓和幅度的乘積，並通過濾波器和功放后即得到頻率固定，幅值隨輸入角成正餘弦變化的電壓信號；最後用數據採集卡採集輸出信號，顯示波形並進行頻譜分析。 -
The system takes both advantages, the former is fast and convenient characteristics of dasylab in building a control and measure system, and the latter is the powerful program function and abundant control button of labwindows / cvi. it can acquire, analysis and save the real - time data in the experiments of the lim and electromagnet meanwhile, it can control the start / stop of the lim. electromagnet and dc motor, as well as it can control the change of the voltage and frequency of the lim. the exciting windings voltage and rotor windings voltage of the dc motor
整個測控系統利用了dasylab組建採集分析系統的簡單快捷和labwindows cvi豐富的控制項與強大的編程功能，將兩者的優點有機的結合起來，可以完成直線電機及電磁鐵試驗中的數據採集、分析、存儲，並且可以控制試驗中直線電機、電磁鐵、直流電機的啟動與停止，對直線電機繞組電壓、直線電機繞組電壓頻率、直流電機勵磁繞組電壓、直流電機電樞繞組電壓、電磁鐵繞組電壓的大小進行控制。 -
Simulation and analyses on the model are done. the paper gives detailed analyses of the motor ' s exciting current by the experiment of the voltage regulation system for the first time. the methods of improving automatic voltage regulator are presented based on the analyses of results
然後設計了發電調壓器的硬體電路，建立了調壓系統的頻域模型並進行了模擬分析，對發電系統作了較為全面的實驗，首次詳細分析了勵磁電流的變化規律，分析了實驗結果，提出了調壓器的改進。 -
A zero - voltage starting method is brought forward which switch the starting from separate exciting to self - exciting successfully ; pll ( phase lock loop ) technology is employed to realize the frequency tracing and constant phase angle control ; igbt driving and protective circuit suitable for parallel inverter is developed, which successfully solve the problem of time compensating and overlapping regulation for the driving signals ; a novel and practical over - voltage protective method for parallel inverters is presented which effectively avoid the possible over - voltage destroy to the inverter. xu haiwen ( power electronics and electric driving ) directed by senior engineer peng yonglong
提出了一種零壓啟動的他激轉自激方法；通過採用鎖相環技術實現了逆變器工作頻率的自動跟蹤和容性逆變角度的恆值控制；設計了適用於並聯諧振型逆變器的igbt驅動與保護電路，解決了驅動信號的時間補償以及重疊角的可調問題；提出了一種新穎、實用的逆變器過壓保護方法，有效地解決了並聯型諧振逆變器過壓保護這一難題。 -
The influence of frequency, voltage, waveform of the excitation source and other factors in the new exciting scheme are discussed, based on which an optimum excitation scheme is presented to maximum the torque output of the machine in the low speed range
在此基礎上，系統地分析了在單相勵磁條件下的勵磁頻率、電壓、波形等因素對電機特性的影響，並提出了最佳勵磁的方案。 -
Firstly mathematic model of the micro cantilever structure is established by elastic mechanics analysis, during which small - displacement and large - displacement are both discussed. also the direct current exiting voltage and alternating current exciting voltage are both discussed. then we investigate the bifurcations of the conditions which have been mentioned above
首先基於彈性力學的方法建立了微懸臂梁的動力學模型，包括微懸臂梁為精確撓度和近似撓度兩種系統，以及作用電壓為直流和交流的情況，並對各種情況進行了靜態分叉的分析。 -
Comparing with uncovered antennas with the same gap size, the covered antenna has higher breakdown voltage at the same optical exciting power, and it ' s thz out put is 1. 5 times of uncovered antenna
與未鈍化的光電導偶極天線相比， si3n ;鈍化過的光電導偶極天線耐壓能力顯著提高，其輻射功率約為未鈍化天線的1 . 5倍。 -
Finally, two novel control schemes, exciting voltage control and full conducted current chopping control, are discussed in detailed and proved by tests of srg prototype system
在理論分析的基礎上，完成了基於dsp控制和全硬體控制的開關磁阻發電系統控制電路，並且進行了原理樣機實驗。 -
Eddy current nondestructive testing ( ecndt ) is widely used to detect the thinness and defects of the sample, because of its characteristics of non - contact, high sensitivity and ease of detection. the principle of ecndt is that : when a probe coil with the ac exciting source is put near a sample, eddy current will be produced in the sample which will conversely affect the impedance of the coil according to the farad theorem. any un - uniformity in the sample will change the impedance of the coil and the output voltage
渦流無損檢測技術具有靈敏度高、檢測速度快、非接觸等特點廣泛應用於厚度檢測和缺陷探傷，它的原理是當載有交變電流的檢測線圈靠近金屬導體時在導體中產生渦流，該渦流又影響原磁場，使得線圈的阻抗和感應電壓發生變化，通過分析阻抗或感應電壓的變化來獲得被測導體的信息。
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