given frequency 中文意思是什麼
given frequency
解釋
已知頻率-
Under the incentive of the civil - market demanding such as laser material processing and the military - market demanding such as a new generation of laser weapon candidate and icf, diode - pumped solid laser ( dpsl ) develops rapidly worldwide. as an important application, diode - pumped intracavity - frequency - doubled laser is attached much importance in recent years, but there still remain many problems unresolved completely. in this paper, i have given some abecedarian study results on some of these problems theoretically and experimentally
因工業激光材料加工等民用市場的需求以及慣性約束聚變和作為新一代激光武器候選器件等軍方需求的推動，國際上高功率二極體泵浦固體激光器（ dpsl ）的研究進展迅速，作為dpsl的一個重要應用，內腔倍頻一直得到大家的重視，但仍有許多未徹底解決的問題和理論上的不完備之處，本論文擬對其中的一些問題作一初步的理論和實驗研究。 -
The methods of direct measurement with low precision such as frequency and time interval methods and the methods of indirect measurement with high precision such as beat frequency method, dual mixer time difference method and frequency difference multiplying method are supported on the platform. the fundamentals of each method are studied. the quantization error is analysed and the illustration is given for each method
該平臺支持直接頻率和時差法兩種較低精度的測量方法以及雙混頻時差法、差拍頻率法和頻差倍增法高精度的簡接測量方法，本文研究了各種測量方法的原理，對各種測量方法的量化誤差作了分析，並給出具體的實例。 -
By using the processing method of sliding time window, the problem of the periodicity range ambiguity is solved. meanwhile, the problem of range ambiguity which is produced because the range of target is biger than the maximum range of radar is also solved by using this method. then, the pulse width parameter which is the most important in the parameters of fmicw is analyzed. the stricter restrict is given to ensure the range spectrum has only one beat frequency after signal processing. at last this thesis introduces the different signal processing methods of fmpcw and fmicw
同時利用該方法解決了fmpcw信號的由於目標距離超過雷達的最大單值測距范圍而引起的距離模糊問題。然後對fmicw波形參數中最為重要的脈沖寬度進行了分析，給出了更為嚴格的約束條件，保證了信號處理后距離譜峰值的唯一性。最後，分別介紹了fmpcw和fmicw信號的不同處理方式，並對兩者不同的時域濾波性能進行了比較，並對二者的差異進行了分析。 -
Finally the main parameters of the radio frequency channel are tested and the results are given
最後本文對射頻通道的主要指標進行了測試，給出了測試結果。 -
The structure of the testing platform is described, and the experiment content and principles are given in detail. the transmission error curves and space frequency curves are emulated. the circuits of rotor part and software are finished
本文介紹了實驗臺的整體結構，實驗內容的設置和各實驗的工作原理，模擬了傳動誤差曲線及其空域頻譜圖，詳細闡述了轉子測量的電路設計、下位機程序設計和上位機的軟體設計。 -
One is based on vco, and the other is based on frequency divider. the advantages and disadvantages of them are discussed in the thesis. furthermore, a method of realizing dead time changeable circuit is given, which makes the designed driving circuit have more latitude when it is used
此外，論文還設計了兩種驅動信號產生電路，一種基於vco ，另一種基於振蕩器和分頻器，並對比了兩者的優缺點;給出了一種死區時間可變的電路實現方案，使所設計的驅動電路使用時具有更大的靈活性。 -
The focus of this paper is the problem of frequency optimum codes of irrelevance processing. the method of researching optimum codes by using costas array method is given
著重討論了非相干處理時的頻率最優編碼問題，給出了以costas陣列方式尋找最優編碼的方法。 -
3. when the number of the nodal circles and the design frequency are given, the stepped circular plate satisfying the requirement can be designed
在給出設計頻率和節圓數目的條件下，可以根據節圓處振幅為零可以設計出任一個節圓的階梯板的尺寸參數。 -
Tdma allocates each user a different time slot on a given frequency
Tdma在給定頻率為每個用戶分配不同的時隙。 -
It mainly includes following aspects : in this paper, firstly implication of wavelet analysis in signal harmonic component extraction is presented in detail, and on this foundation signal given frequency band component extraction method is proposed. then we investigate frequency aliasing phenomenon, reason why frequency aliasing phenomenon is easy happened when wavelet is implied in field of motor fault diagnosis, and frequency bands where frequency aliasing phenomenon is easer happened, and put forward approved morlet wavelet analysis method which can effectively alleviates frequency aliasing phenomenon. third we set up vibration signal detected system, design experiments to obtain three groups of fault signals : eccentricity fault, mixed fault of eccentricity plus mild rub, mixed fault of eccentricity plus moderate rub, and process these data using analysis method proposed in this paper
首先對論文的選題以及相關背景進行了探討，並對相關的小波基礎理論進行了闡述，主要針對感應電動機的偏心故障和偏心+碰摩復合故障形式及相關的應用演算法進行了詳細探討，主要工作內容包括下面幾個方面:在論文中，首先對小波分析在信號的諧波分量提取中的應用進行了研究，在此基礎上，提出了信號的特定頻帶成分的提取方法;研究了小波分析的頻域混疊現象，探討了小波分析應用於電機故障診斷領域時易發生頻域混疊現象的原因，以及混疊現象較易發生的頻帶，提出了可以有效減輕頻域混疊現象的改進的morlet小波分析方法;搭建了振動信號檢測系統，設計實驗採集得到三組故障數據:偏心故障，偏心+輕微碰摩復合故障，偏心+中度碰摩復合故障，並對這些數據應用本文提出的分析方法進行信號處理，提取出的特徵參數可有效區分這兩種故障形式;研究了基於matlab和labview的混合編程方法，完成了電機故障檢測系統的軟體開發。 -
Based on observations, planck in 1900 figured that a heated body releases light of a given frequency, or color, in discrete amounts called quanta
1900年，普朗克根據實驗的觀察推論出，一個受熱的物體在放出某種頻率（或顏色）的光時，是以稱為量子的不連續量放射。 -
This thesis mainly analyze the structure of switch the circuit ' s form and some of manufacturing technic. under the given frequency band, the switch has flat capability of insert loss and isolation, and can satisfy the need of millimeter - wave system
本課題主要對開關的結構、電路形式及製作工藝等方面進行了一定的分析，使得毫米波鰭線pin管開關在給定頻率范圍內，具有平坦的插入衰減和隔離度特性，滿足毫米波系統的需要。 -
The comparison between the results of calculation and measurement shows that the two results are in good agreement for the broad band antenna in the l band and the waveguide - coax converter of bj48 type used as antenna in the c band, with a difference of less than 0. 7db, and that the two results also agrees well in the x band for the waveguide - coax converter of bj100 type used as antenna, with an error close to 1db only at few points in the given frequency range
比對結果表明: l波段（加脊天線） 、 c波段（ bj48型波導同軸轉換作為接收喇叭）的模擬結果與實測結果符合得較好，誤差小於0 . 7db ;在帶內， x波段（ bj100型波導同軸轉換作為接收喇叭）的模擬結果與實測結果比較一致，只在個別頻率點處誤差近1db 。 -
The loaded - line - type, switched - line - type and reflection - type phase shifters are studied in this thesis. considering the defect of loaded - line phase shifter, a new type of switched - line with loaded - line phase shifter is proposed in this thesis. this design not only make advantageous debugging of circuit, but also minimize phase - error in a given frequency band
本文對加載線型、開關線型和反射型移相器進行了分析研究，並針對開關線型移相器的缺陷，提出了一種加載式的開關線型移相器設計方法，不但便於對電路進行調試，也減小了一定帶寬內的相位誤差。 -
The system can make the total signaling rate very close to the nyquist rate of given frequency band through the use of a lot of subchannels
該系統利用大量的子通道使得總的信號速率能夠非常接近給定頻帶的奈奎斯特速率。 -
In electronics, pertaining to an amplifier or circuit having a frequency respo nse characteristics that is uniform, within defined limits, across a given frequency range
在電子學中，用來修飾或說明一種放大器或電路，這種放大器或電路在一個給定的頻率范圍內，具有均勻的頻率響應特性。 -
The experiments of motor without and with load on a given frequency are completed in this paper. these results are compared and analyzed. the feasibility of the scheme is validated through the analysis of the results
通過理論分析和對控制系統的設計，作者在dsp電機控制教學實驗及系統開發平臺上對六邊形磁鏈控制演算法進行了初步的開環實驗，完成了電機在一定頻率下空載和帶負載的實驗，並對實驗結果進行了對比分析，結果驗證了系統設計方案的可行性。 -
This paper presents a new method for designing robust h control system, in which the design objectives are converted into the inequality constraints and the selection of weighting functions in h controller design is expressed as a multi - objective optimization problem. the h controller, which satisfies given frequency - domain and time - domain performance indexes, can be found by using genetic algorithm ( ga ) to optimize the weighting functions
本文提出了一種基於遺傳演算法的h控制系統設計方法，把控制系統的多個設計目標轉化成不等式約束，將h控制器設計中加權陣的選取表示成一個多目標優化問題，通過遺傳演算法優化加權陣參數，進而找到同時滿足給定的頻域和時域性能指標要求的h控制器。 -
In the circumstances of the te11 mode mixed with the given parasite modes, the errors from the practically used directivity can be corrected with the calculated difference between dh and d. the effective area of the receiving antenna is calculated with the established models, and measured at some points in the given frequency range
在已知混入te11模式中雜模成份及其比例的情況下，可以通過計算出dh與d的差值，對採用的方向性系數進行誤差修正。通過建立相應模型，對接收喇叭的有效面積進行了計算，並在部分頻率點上進行了實測。 -
But at present variable frequency control sets mainly the given frequency on the ground of the status of oil well, and makes the beam unit extract oil by the given frequency. consequently, the output feature of motor is still hard, and ca n ' t adjust the output torque of motor according to the load feature of beam unit
但是，目前抽油機變頻控制主要還是根據油井狀況來設定給定頻率，使抽油機電機按給定頻率來抽油，電機的輸出特性比較硬，而且還不能根據抽油機的負載特性來調節電機的輸出轉矩，有時還存在著發電狀態等問題。
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