波幅型 的英文怎麼說
中文拼音 [bōfúxíng]
波幅型
英文
amplitude mode-
This article discussed ar modeling method, capon method, music method and mn method four kinds of high resolution algorithms principle and has separately made the computer simulation in the ideal situation to the above four algorithms. through the comparison, the beam width of high resolution algorithm is much narrower than conventional beamforming method. then unifies the actual utilization, discussed the influence of time delay unbalance, time domain sampling, plane wave supposition and array element with scope and phase not identically to the beamforming and made the computer simulation
本文首先討論了ar模型法、 capon法、 music法和mn法四種高解析度演算法的原理，在理想的情況下分別對上述四種演算法作了計算機模擬，通過比較，高解析度演算法的束寬比常規波束形成法窄得多;然後結合實際運用時的情況，重點探討了延時失配、時域抽樣、平面波假設和基陣的幅相不一致對波束形成的影響並做了計算機模擬。The other research purpose is to discover characteristic information and reliable methods of reflecting spinal cord damage. due to typical damage indicators, amplitude and latent period, have bugs such as limited information and weak stabilities, this project recommends applying time - frequency analysis to monitoring spinal cord function. through analysing and comparing typical signal with stft and cwt, it is proved indicators under time - frequency distribution can be better in reflecting signal changes, espcially the wavelet transformation
針對目前ep監測中判定脊髓損傷的指標（波幅和潛伏期）存在信息量相對較小、穩定性較差的缺陷，本課題提出利用時頻分析技術對術中脊髓功能監護進行研究，通過短時傅立葉變換和小波變換分析和比較典型信號的時頻分佈，證明時頻特徵參數能更有效的提取信號的變化信息。Although many achievements have been acquired in oled structure material, production technology, drive methods, oled technology is just at the beginning, oled has given an equal chance for every company and country, and it is very important for our country to develop displaying technology of our own. the research direction of oled is managing to improve the device lifetime, at the same time found a perfect production technological flow and the global standard production mode. it is still a arduous mission that we want to live up to a batch production of oled displays in the future some years. active matrix organic light emitting diode ( am - oled ) adopts a circuit structure based on matrix addressing, and its driving circuit includes pixel driving circuit and peripheral driving circuit
在文中，首先，分析和研究了有源oled的像素驅動電路，闡述了amoled顯示屏及其周邊驅動電路的結構和原理;其次，提出了qvga解析度的有源oled顯示屏列電極數據引線的分塊（ block ）方法，確定屏上驅動電路所需要的控制信號之間時序關系和幅值要求;最後，以fpga控制器的設計為核心，對外圍控制ic進行了具體設計，建立控制器電路模塊模型和演算法流程，通過quartus軟體對其內部的各個電路模塊進行綜合設計和模擬，得到了正確的模擬波形，完成了解析度為qvga （ 320 3 240 ）的amoled專用驅動電路的設計。The analysis showed that terms of trade and volatility of the output gap were predominant among the structural variables. the paper concluded that hong kong, as a small and open economy, was specialised and subject to high income volatility and business cycle fluctuations with relatively concentrated and limited domestic investment opportunities
分析顯示貿易價格比率及產值差距波動是其中主要的結構性因素，並總結認為香港作為細小及開放型的經濟體系，情況獨特，備受收入大幅起伏經濟周期波動，以及本地投資機會相對集中與有限的影響。Two nonlinear simulation methods are designed by curve fitting method and anfis which seem simply and right in the simulation experiment. based on the model different control strategies also were realized in detail such as chopped current control ( ccc ), angular position control ( apc ), amplitude - change ccc and pi control. a simple torque sharing function ( tsf ) method and a tsf controller were designed which decreases torque ripple effectively
文章中還建立一種基於模糊神經網路的非線性模型，並對比分析了三種方法，模擬中確定了電機的最優開通關斷角，在此基礎上實現了電流斬波控制、角度位置控制、變幅值電流斬波控制以及分段雙閉環pi控制，模擬結果表明，它實現了電機的正常運行，很好的抑止了電機轉矩脈動，同時有效地降低了噪聲。The capacitance offset averaging network is used in the distributed track - and - hold circuit block of the designed system. finally, according to the analysis on error effects in adc, the mathematics error model is simulated. furthermore, the input - output characteristics including input -
最後，基於對a / d轉換器系統中誤差的分析，對其誤差數學模型進行了模擬，得到了包含延遲、限幅、諧波失真等誤差的輸入輸出特性曲線。1 m 0. 5, the phase - shifted angle 6 is controlled in term of sine law which makes the magnitude of resonant voltage track a reference sine voltage, and the resonant voltage is rectified, filtered, inverted and then the better sine - voltage output is obtained, theoretical analysis and experimental results show that for the resistive load and inductive load, the switches of leading leg of the phase - shift - controlled circuit are always turned on at zvs, and ones of lagging leg are turned on at zvs ( < 0 ) or turned off at zcs ( ( > 0 ), moreover, all switches in the low - frequency inverter are always turned on and off at zvs, the measured circuit efficiency for rated load reaches up to 88 %
從功率單向流動角度出發，提出了一種lcc諧振型恆頻移相單相高頻鏈逆變電路拓撲，在調制系數0 . 1 m 0 . 5情況下，控制移相角按正弦規律變化，使諧振電壓脈沖列的幅值追蹤參考正弦電壓信號，經過整流、濾波、低頻逆變，從而獲得正弦度較好的輸出電壓。理論分析和實驗結果證明對于阻性負載或阻感性負載，移相全橋具有超前橋臂零電壓開通，滯后橋臂或者零電壓開通（ _ 0 ）或者零電流關斷（ _ 0 ）的軟開關特性，而低頻逆變器的各個開關均實現零電壓條件下的開通與關斷。Around 40 ; the neutral curve obtained by the growth rates of the temperature fluctuation has a ringlike curve separated from the main branch of nachtsheim s calculation by velocity fluctuation at the lower grashof number side ; and its phase velocity is close to the maximum mean velocity where the critical layer of the eigenmode locates. the thermal fluctuation decays rapidly as the nondimensional frequency above 0. 4, so that it means that the coupling effect between instability wave generated by buoyancy fluctuation and velocity waves by invicid instability seems weak enough for their critical layers in the range of the nondimensional frequency
詳細研究了自然對流邊界層中最早失穩的浮力振型的功率譜波長波速與臨界層位置等基本特徵和它為主導其他振型尚未失穩時按線性理論得到的3種相互獨立振型的振幅分佈。系統地測量了它所對應的溫度和速度漲落的振幅增長規律和中性曲線，實驗結果表明，溫度漲落的中性曲線在低格拉斯霍夫grashof數Abstract : it provides a kind of new nonlinear integrator and its mathematical model. its frequency responses is disscussed by the harmonics linearization method. its phase lag is found to be only 27. 6, all high order harmonics are very small, and it is very resistant to disturbances. by using it, an two - objective optimum control system is designed. it has very good control performances and will have good prospects in application
文摘:提出一種新型的非線性積分器，給出它的數學模型，並用諧波線性化原理討論它的頻率特性，其幅頻特性起積分作用，而相位滯后僅27 . 6 ，高次諧波分量小，抗干擾能力強.應用這種積分器設計了一個雙目標優化的二次優化系統.模擬結果表明，系統的控制性能好，具有廣泛的應用前景In the lowest order, for the propagation of solitons in an inhomogeneous dusty plasma composed by two kinds of dust grains with different masses, if the interface of two kinds of dust grains in an inhomogenous dusty plasma is discontinuous, the tra nsmision and reflection waves both can be described by the kdv equation
2在非均勻塵埃等離子體中，對于小的、但有限振幅的長波振動，孤子可用kdv方程（或kdv型方程）來描述，而且電勢孤子的傳播情況在定性上與離子等離子體中電勢孤子的傳播情況一致。The nucleus is the software in the design and realization of virtual instruments. we use the design method of module and use many papers to describe the whole building process of the typical signal generation module, date handling module, date reading and writing module, resultdemonstrate module. as the conclusions, we also offer the panels and the diagrams of virtual signal frequency spectrum analytical instrument, virtual butterworth filter, virtual signal generation instrument, virtual integrator and differentiator regulator and amplitude modulation wave counter modulation instrument
本文採用模塊化設計方法，詳細描述了典型信號生成模塊、數據處理模塊、數據讀取和存儲模塊、顯示模塊等軟體開發的全過程，分析、解決了設計及實現過程中出現的問題，並給出了已實現的虛擬信號頻譜分析儀、虛擬巴特沃斯濾波器、調幅波解調器、虛擬信號發生器、虛擬積分器和微分器等實驗教學用虛擬儀器的前面板圖和程序流程圖。The model considers peak value of lightning current, tower grounding resistance, tower style, line surge impedance, power frequency voltage and distance between towers
模型中考慮了雷電流幅值、桿塔沖擊接地電阻、桿塔具體形狀、尺寸、桿塔波阻抗、工頻電壓及檔距等因素的影響。Finally, the values of kinematic parameters in typical swimming are estimated for theoretical calculation and computational simulation. based on the kinematic formulation, this paper applies large - amplitude elongated body theory to propulsive performance of undulatory dorsal / median fins and establishes a set of equations for estimation of the propulsive force and the propeller efficiency. the calculations based on experimental data coincide with blake ’ s result in 1980
從波動運動的參數方程出發，本文基於大擺幅伸長體理論對背鰭/背臀鰭波動模式的推進性能進行了分析，推導推進力和推進效率的計算公式，利用實驗觀測典型運動參數對仿生對象的推進力和推進效率進行了理論估算，結果與blake的計算結果相吻合，從而驗證了所建運動學模型的有效性。This article analyses the signal characteristics of several typical cw radars, and presents the principle and application of doppler radar. as one focal point, this article researches the generation and math characteristics of pseudorandom code modulated signal, analyses the spectrum of pseudorandom code phase modulation radar signal, and presents this kind of signal ' s application in distance and speed measurement. this article also researches the application of mono - pulse amplitude comparison radar in angle measurement finally, this article elaborates the working process of crs in uast
本文分析了幾種典型的連續波雷達信號的特性，介紹了多普勒雷達的原理和應用；研究了偽隨機編碼信號的產生和數學特徵，著重分析了偽碼調相連續波雷達信號的頻譜，及其在雷達測距、測速方面的應用；研究了單脈沖幅度比較體制在雷達測角中的應用；最後，闡述了超近反導系統中復合體制雷達的工作過程。As an example using sine wave, the effect of vibration amplitude and frequency and time on bit error rate is researched
以振動譜中典型的正弦諧波為例，推導了振幅、頻率和時間對誤碼率的影響。Through the i 、 q component of ipix radar sea clutter data " s histogram analyses and by skewness and kurtosis computed, it is been shown that sea clutter amplitude is not rayleigh distribution ; through the comparison of amplitude histogram and distributed models with the same parameters, it is been shown that hh polarization clutter is lognormal distribution, whereas vv polarization is k - distribution ; at the same time the correlation function and power spectrum density are been analyzed, at last the correlation compound k - distribution stochastic sequences whose covariance matrix is been given are been generated through sirp algorithm
文中先介紹了海雜波幅度的有關模型，通過對ipix雷達海雜波數據的i 、 q分量的直方圖以及傾斜度和峰度進行了分析和計算，證明了海雜波幅度不服從瑞利分佈;使用幅度直方圖和相同參數下的各種分佈模型進行比較，得出hh極化符合對數正態分佈，而vv極化服從k -分佈的結論;同時對海雜波的相關函數和功率譜進行了分析，最後使用sirp演算法產生了給定協方差矩陣的相關復合k -分佈隨機序列。This paper is mainly about land clutter and sea clutter. it meanly introduced scatter character, radar echo signal range, and power spectrum model. in the end, a hardware realization of producing a specified power spectrum is given
本文主要研究了地、海雜波的散射特性、回波幅度特性和頻譜分佈模型，並且給出了一種硬體實現產生具有一定頻譜特性的雜波的方案。By setting a amplitude filter ( module ) with certain transmission function in arrayed waveguides, we design optic signal add / minus. by changing the length of center arrayed waveguides, we design phase foil filter of awg ultimately, the present stage work are summarized and some future work are discussed
通過在陣列波導嵌入一定傳遞函數的振幅型濾波片（模片） ，設計了awg型光信號加減器；通過改變中心陣列波導的長度，設計了awg型相襯濾波器。The way reduces the error. this paper also particularizes the prime parameter of the echo - - radar cross section ( rcs ) which is influenced by many factors. considering the fluctuation of rcs and the modulation by the radar antenna, the paper contains both slow and quick fluctuating targets
兩種回波的模擬數據表明：模擬結果與理論模型的結論符合很好，能夠滿足運動目標回波幅度分佈特性的要求；並且在多數情況下，雷達探測到的目標都是慢起伏目標。To simulate return accurately, we set several models as follows : target radar cross section ( rcs ) model, target antenna modulating model, target wave modulating model, noise model, clutter amplitude distributed model and power spectrum distributed model. each of these models has been analyzed and simulated
分別建立了目標截面積起伏模型、目標天線方向圖調制模型、目標波形調制模型、噪聲模型、雜波幅度分佈和功率譜分佈模型，對每種模型的建立進行了分析和模擬。分享友人