模時延差 的英文怎麼說
中文拼音 [móshíyánchā]
模時延差
英文
differential modal dalay-
According to the research mentioned above, this paper analyzes the bbk trust model whose critical attribute is binary, and indicates its disadvantages : trust failure punishment equals to that of success, which deviates reality ; malicious recommendation and unfair phenomenon is serious ; trust value fluctuates due to simple arithmetical average algorithm and computation lasts long
基於以上工作,分析了關鍵屬性為二元屬性的bbk信任計算模型,指出其存在的問題:信任理解與現實存在偏差?信任失敗的懲罰尺度等於成功信任尺度;存在嚴重的惡意推薦現象和不公平現象;採用簡單的算術平均計算信任值可能導致波動很大;計算時延較大。Optical fibres - measurement methods and test procedures - differential mode delay
光學纖維.測量方法和試驗規程.模時延差Differential group delay measurement of single - mode components and devices by the differential phase shift method
利用微分相移法進行單模元器件和裝置的群時延差測量The time complexity is low because only shortest paths connected to relay nodes is compared. simulation results show that fairly good cost performance is achieved. there is trade - off between complexity and performance
由於比較了通過中轉節點后的最短路徑,因此運算的復雜度大大降低,且通過模擬得到了較好的性能,模擬結果表明sp - dvma演算法是一種低復雜度的時延和時延差約束的多播路由演算法。An assumption is verified that the multi - path arrival time differences calculated by ray model is almost the same as that by normal mode model if higher frequencies for the source are used ( e. g., frequencies range between 600hz and 1600hz ). hi other words, the calculation of the multi - path arrival time differences by ray model is reliable. 2
該方法的研究結果驗證了一個重要的假設:當信號頻率較高時(例如600hz 1600hz ) ,用聲線模型計算多途到達時延差與簡正波模型得到的結果基本一致,並且聲線模型計算多途到達時延差具有較高的可信度。The delay and delay variation constrained minimum steiner tree problem is also researched. lcdvma ( low - cost delay variation - constrained multicast algorithm ) is proposed for this problem. low time complexity, low cost and constrained delay and low delay variation are achieved by only comparing minimum delay paths and minimum cost paths
對于時延和時延差約束的最小steiner樹問題,提出了一種基於最小時延路徑和最小費用路徑的演算法?一lcdvma演算法,由於該演算法比較了通過中轉節點后的最低費用路徑和最短時延路徑,降低了運算復雜度,通過模擬得到了較小的網路費用和時延差,因此lcdvma演算法是一種具有低復雜度的時延和時延差約束的最小steiner樹的啟發式演算法。According to federation development and execution process ( fedep ), the concept model of the distributed interactive system is developed, fom / som and fed file are created, real - time and living display is r ealized bye orrectly combining vr - link w ith t he v ision federate, synchronization simulation is carried out by independently advancing simulation time, t he s ystem 1 atency is analyzed b y t esting t he t ime characteristic of t he system
3 . 3和vr一link3 . 6 . 1為開發環境,依照聯邦開發執行過程fedep開發出魚雷武器分佈交互模擬系統的概念模型;建立了fom / som模型並生成fed文件;解決了與三維視景聯邦成員的介面技術問題,從而實現了實體狀態的實時的、逼真的顯示;採用獨立時間推進實現了聯邦的同步模擬;對系統產生的時延特性進行了測試,分析了魚雷武器分佈交互模擬中的時延誤差問題。There are many plants that have the character of time - varying, large delay, large inertia in the process of production of modern power station such as the superheated steam temperature, the reheated steam temperature, the water treatment of boiler and the load regulation. some of them have the strong character of nonlinear and some of them are multivariable coupling systems it is very difficult to obtain good effect of control by conventional pid control. it is necessary to set up the mathematics models of controlled plants if applying control means of modern control theory such as self - adaptive control, optimal control , decoupling control and predictive control. and these control systems have large calculation and bad character of real time in general. these disadvantages make them be not able to meet the need of real production process and limit the application of them in modern power station. now the generator units are developing towards large capacity and high parameters. many new kinds of generating electricity means are coming into being. the characers of production units of power station become more and more complex but the demand to quality of control becomes more and more strict. the new control means are in bad need to control them effectively
現代電站的生產過程中存在過熱汽溫、再熱汽溫、鍋爐水處理、負荷調節等許多大遲延、大滯后、特性時變的對象,它們中有些還是具有強非線性特性的對象或多變量耦合系統,採用常規的pid控制手段很難取得良好的控制效果。若應用現代控制理論中的自適應控制、最優控制、解耦控制、預測控制等控制手段,則需要建立被控對象的數學模型,而且往往控制系統的計算量大、實時性差。這些缺點使其很難滿足實際生產過程的需要從而極大地限制了其在現代電站中的應用。The meaning of cqc ( t ) algorithm is the difference in time domain between the peak value location in time axis of input earthquake and model response of structure, which is called delay time. through the delay time calculating of a series of oscillators with different damp ratio and natural vibration frequency, it is found that it will bring biggish error if the cqc algorithm applied on the structure which has long period, and the time dependent cqc ( t ) algorithm could solve the problem easily
Cqc ( t )方法的意義在於輸入地震動峰值與結構模態響應峰值在時間軸上的時間差,我們稱之為延遲時間,通過計算具有不同周期和阻尼比結構的延遲時間,發現對于自振周期比較長的結構, cqc方法會帶來比較大的誤差,而基於時程的cqc ( t )方法能夠解決這個問題。The image - based approach may reduce computational delay, eliminate the necessity for image interpretation and eliminate errors due to sensor modeling and camera calibration
該方法可以減少計算延時,並且對攝像機和機械臂的校準誤差和目標模型誤差具有較強的魯棒性。The effects, caused by rms delay spread estimation, on choosing the right guard interval length is also discussed. simulation results are given as well
分析了rms時延擴展估計誤差對于保護間隔長度選定的影響,並給出模擬結果。In the fifth chapter, a new fully differential operational amplifier with voltage and current - mode negative feedback has been proposed, which can stabilize its quiescent operation point, using the characteristic of mos transistors which operate in the triode region acting as active variable resistor, a fully differential fourth - order chebyshev low - pass filter with tunable frequency and bessel low - pass filter with accurate group delay based on r - mosfet - c and operational amplifier has been designed
第五章:提出了一種新的既具有電壓共模負反饋又同時具有電流共模負反饋的全差分運算放大器電路,能較好地穩定電路的靜態工作點,並應用mos管工作在線性區可作有源可變電阻用的特性設計得到了截止頻率可連續調節的高性能r - mosfet - c 、運放結構切比雪夫( chebyshev )和精確群時延值貝塞爾( bessel )低通濾波器。Basd on the thin - shell model and the character of the ionospheric incline, with the method of numeric simulation, we have studied the error of ionospheric incline, and have got the result that it ' s requisite to consider slant of ionospheric layer
摘要在考慮電離層薄層傾斜的基礎上,數值模擬、分析了電離層傾斜帶來的電離層附加時延相對不考慮電離層傾斜的偏差,從而說明了在電離層傾斜地區消除電離層傾斜的必要性。In part iii, memory position and velocity feedback is proposed to guarantee stability and transparency of a teleoperation robot system with time delay and uncertain parameters. linear matrix inequality is used to design feedback parameters of the system. in this way, static track error between the master and the slave is little, however, sometimes the feedback parameters does n ' t exist
第三部分針對遙操作機器人系統傳輸通道中的通訊時延和系統模型的不確定性,造成系統不穩定和操作性能降低等問題,提出用帶記憶的位置和速度反饋控制方法,並用線性矩陣不等式對系統的反饋參數進行設計,使系統魯棒漸近穩定,主、從機械手靜態跟蹤誤差較小,而且使系統具有良好的透明性。Active underwater acoustic positioning / tracking systems locate target by measuring the range from object to receiving sensors. usually the target - receiver range can be got by the propagating time of a signal pulse. if this propagating time is larger than the pulse repetition period, it will mean that more than one signal pulse are on propagation
主動水聲跟蹤定位系統通過測量脈沖信號的傳播時延可以測得目標相對接收機的距離,當此傳播時延大於系統同步周期時,時延測量就會呈現不確定性,可能相差若干個重復周期,導致定位解多值,稱之距離模糊現象。Optical fibres - part 1 - 49 : measurement methods and test procedures - differential mode delay iec 60793 - 1 - 49 : 2003 ; german version en 60793 - 1 - 49 : 2003
光纖.第1 - 49部分:測量方法和試驗過程.差分模式延時The main work of the first part includes : analyzing the theory of measuring direction and distance of the target by three elements symmetrical and dissymmetrical array, comparing the measuring error of two kinds of array, discussing the characteristics of time delay in passive distance measurement, giving valid method of time delay estimation, and discussing the restriction of this method and the distance wrapping in passive ranging
對三元非對稱陣被動測距技術的主要研究工作包括:分析了三元對稱陣和非對稱陣測向測距的原理,對兩種陣型的測向、測距誤差進行了對比分析,探討了三元陣被動測距中時延差的特點,提出了有效的時延差估計方法,並對該方法的局限性以及被動測距中存在的距離模糊問題進行了探討研究。In the seventh chapter, some of the above proposed new circuit, such as high frequency, high definition 12 - bit, 80mhz samples / s current - steering dac and fully differential r - mosfet - c bessel filter with accurate group delay, high accuracy bandgap reference and high drive capability cmos operational amplifier have been applied in communication gsm baseband i / o port integrated circuit, all the above blocks meet well with the design requirements of the system, and gain the better testing results, in the mean time, the above proposed high accuracy bandgap reference circuit als
第七章:將本文第二章提出的高速、高精度12位、 80mhz采樣率電流舵結構的數模轉換器和第五章提出的r一mosfet一c結構且具有精確群時延值的貝塞爾( bessel )濾波器以及第六章提出的高精度帶隙基準電壓源和高驅動能力全差分運算放大器電路應用於通信gsm基帶輸入/輸出埠晶元,滿足系統設計要求並取得了令人滿意的實測結果。The primary conclusions are drawn in this paper on these points : ( 1 ) after the blasting data of delayed time and height are gained based on the theory of gradually disintegration, the elements need to kill are executed similar with destroying the part of the building. then the pre - condition cg solver is pitched on to execute the nonlinear analysis
本文的主要成果如下: ( 1 )根據逐段解體法爆破拆除設計的原理,計算秒延差時間和爆破高度,在已劃分網格的有限元模型中殺死擬爆除的部分單元,使整體結構處于失穩狀態下,然後利用前置條件共軛梯度法求解器對結構進行材料和幾何非線性求解。Base on the simu1ation model of signal and correlated noise model, the performance of different method is compared under different signal to noise ratio ( snr ). 6. the performance of differcni time delay estimation method is evaluated based on the analysis of real data
通過模擬數據對同一信噪比不同延估計方法性能進行比較,對不同信噪比下每種時延估計方法的性能進行比較,尤其在噪聲不同相關性下對不同時延估計方法的性能進行比較,得到各種時延估計方法在模擬條件下的性能差異。分享友人