sampling stability 中文意思是什麼
sampling stability
解釋
抽樣穩定性-
This paper starts the research of the liquid floated pendulous accelerometer testing system according to the engineering. at first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu - lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band - pass filter, alternating amplifier, phase sensitive demodulatorn, pulse - width modulation, frequency scale circuit, moment current generator. finally, using the graphics program language labv - iew which is designed for testing field especially by ni accomplishes the solfware design of testing system, realized the testing functions
首先對加速度計及其測試技術的發展歷史和現狀，液浮擺式加速度計的工作原理和數學模型等作了簡要的介紹，然後確定了以二元調寬脈沖再平衡測試迴路為設計方案，並從控制理論的角度進行了分析，著重研究了系統中各部分的傳遞函數，利用系統開環傳遞函數分析了系統的穩定性，同時設計了系統的校正網路;分析了二元調寬脈沖再平衡測試迴路的解析度、采樣約束以及測試精度等基本問題，並按照系統分析的結果設計了包括前置放大、帶通濾波、交流放大、相敏解調、脈寬調制、頻標電路以及力矩電流發生器等測試系統各部分硬體電路，驗證了電路的正確性，最後按照測試系統的要求，採用了美國ni公司專為測試領域所開發的虛擬儀器工具? ? labview作為測試軟體開發工具，利用該圖形化編程語言完成了測試系統軟體部分的設計，實現了測試功能。 -
Besides, this paper adopts the random finite element method, uses geometric and physical mechanical parameters that are relevant to lining weight of surrounding rock, coefficient of lateral pressure, height or buried depth of vertical loading, elastic resistance coefficients of surrounding rock, elastic modulus of support structure, unit weight of concrete, thickness of the structure as well as torsional strength and compression strength of concrete and etc., as random variables, applies the monte - carlo method to sampling by computer, preliminarily evaluates the reliability of bearing capacity and stability of molded concrete lining of the xuefeng mountain tunnel, and obtains the related displacement of the lining, mean value and variance of internal force, and computed the reliability index of lining structures
此外，本文採用隨機有限元方法，將圍巖容重、側壓力系數、垂直荷載高度或埋深、圍巖的彈性抗力系數、支護結構的彈性模量、混凝土容重、結構的厚度以及混凝土的抗扭與抗壓強度等與襯砌結構有關的幾何與物理力學參數作為隨機變量，應用蒙特卡洛理論進行計算機隨機取樣，對雪峰山隧道模注混凝土襯砌的承載力與穩定性的可靠度進行了初步評估，得出了襯砌的相關位移與內力的均值和方差，並計算出了相應的襯砌結構可靠指標。 -
Compared to the analogy or the base - band sampling solution, this structure not only enhanced the system mobility, the flexibility and stability, but also reduced the cost, moreover it may be a public platform, which realize multi - purpose and multi - service patterns communication signal despread and demodulation, has fully reflected the thought of software radio
與採用模擬或基帶采樣解擴解調方式相比，這種結構既增加了系統的機動性、靈活性和穩定性，同時價格大幅下降，而且可以作為一個公用平臺，實現多功能、多制式通信信號解擴解調，充分反映了軟體無線電的思想。 -
The paper initiated electroabsorption modulator replacing the conventional model of sampling optical source and high - speed photonic switching. the novel approach greatly simplified the sampling system and improved the stability and reliability. it has been validated in experiment
首次提出採用電吸收調制器代替常規的「取樣光脈沖源高速光子開關」的取樣組合，大大簡化取樣系統的結構，提高取樣系統穩定性和可靠性，並進行了實驗驗證。 -
Rafts are generally more suitable than single boats for sediment sampling operation because of their stability.
由於穩定性較好，筏組比單舟更適用於進行沉渣取樣工作。 -
We use a colorful noise to describe traffic flow and regard it as the uncontrolled input ( equaled to noise ). then we use the multi - rate sampling pi controller to eliminate the error caused by noise, and make the length of queue stabilize at the threshold. the availability of the strategies and stability of systems are proved by doing some analysis and simulation
文中我們將一有色噪聲看作不可控輸入的擾動，採用基於pi的多采樣速率控制器以消除由此不可控輸入所造成的對系統輸出（交換節點緩沖區隊列長度）誤差的影響，使得系統輸出（隊列長度）穩定在閾值附近。 -
This thesis probes into design of microcomputer system taking single chip microcomputer as central, anti - interference, security segregate and design of interface circuit etc. furthermore, the option to cycle of sampling various frequencies examine signals is also analyzed and it was utilized in the examine system. thus, the dependability and stability problem of the microcomputer examine system of hydraulic resistance testbed have been solved better, make this test a modern techniques and practibility is good
本文在以單片機為核心的微機系統的設計、介面電路設計、抗干擾技術及安全隔離技術等方面進行了較深入的研究，分析了不同頻率檢測信號采樣周期的選擇，並在檢測系統中得到了應用，較好地解決了水阻試驗臺微機檢測系統的可靠性和穩定性問題，使得該試驗臺技術先進、實用性好。 -
Improvement of indication stability of measuring signal by slip window sampling
利用滑動窗口法改善測量信號的示值穩定性 -
In general, oot stability data can be described as a result or sequences of results that are within specification limits but are unexpected, given the typical analytical and sampling variation and a measured characteristic ' s normal change over time ( e. g., an increase in degradation product on stability )
通常， oot穩定性數據是指在給定典型分析和取樣變化，以及標準特性隨時間正常變化的情況下，產生的在質量規格限度內，但是超出預期期望的一個結果或一系列結果（比如穩定性降解產物的增加） 。 -
This paper discusses the relation between the sampling period and the stability of sampled - data
本文討論了抽樣周期與抽樣數據穩定性之間的相互關系。 -
With regard to the flow regulation of the best - effort traffic, the controllable traffic in high speed computer communication networks, the present paper proposes a novel control theoretic approach that designs a proportional - integrative ( pi ) controller based on multi - rate sampling for congestion controlling. based on the traffic model of a single node and on system stability criterion, it is shown that this pi controller can regulate the source rate on the basis of the knowledge of buffer occupancy of the destination node in such a manner that the congestion - controlled network is asymptotically stable without oscillation in terms of the buffer occupancy of the destionation node ; and the steady value of queue length is consistent with the specified threshold value
本文從控制理論的角度出發，針對計算機高速網際網路中最大服務交通流即能控交通流的調節問題提出了一種基於多速率采樣的具有比例積分（ pi ）控制器結構的擁塞控制理論和方法，在單個節點的交通流的模型基礎上，運用控制理論中的系統穩定性分析方法，討論如何利用信終端節點緩沖佔有量的比例加積分的反饋形式來調節信源節點的能控交通流的輸入速率，從而使被控網路節點的緩沖佔有量趨于穩定;同時使被控網路節點的穩定隊列長度逼近指定的門限值。 -
Frequency source is widely used in today ' s electronic equipment and even refered as " a heart " of many electronic systems. the frequency synthesizer with a lot of channels and high frequency stability by means of theory of phase locking has almost been a necessary component in the modern electronic systems such as telecommunication, radar and electronic countermeasure. the phase - locked frequency synthesizer can be generally divided into two kinds : one is digital phase locked frequency synthesizer, the other is analog sampling phase locked frequency synthesizer. compared with the prior, the latter has many merits such as lower phase noise, samller volume, lighter weight and lower power consumption and has a wide foreground in the equipments of microwave band
利用鎖相原理來獲得波道數目眾多、頻率穩定度很高的頻率合成器，幾乎已成為現代通信、雷達和電子對抗等電子系統不可缺少的組成部分。鎖相式頻率合成器一般分為數字鎖相頻率合成器和模擬取樣鎖相頻率合成器兩類。取樣鎖相頻率合成器與數字鎖相頻率合成器相比，具有相位噪聲低、體積小、重量輕和功耗低等優點，尤其在微波波段的電子設備中，具有廣闊的應用前景。 -
Meanwhile, caused by the stochastic disturbances and measurement errors, monitoring model based on single measurement value of individual sampling time tends to lack credibility and stability, and can ' t reflect the overall phase - specific operation state
同時，由於各種隨機擾動的影響及測量誤差的存在，針對單一采樣時刻的過程測量值進行建模往往不能保證足夠的可靠性與穩定性，無法實時反映過程時段整體運行情況。 -
By constructing a test matrix in terms of the sampling period, the plant controlled and the model parameters, we give a sufficient condition to test the asymptotic stability for the system
針對不存在丟包和存在丟包的情況，通過由采樣周期、被控對象與模型參數構造的穩定性判別矩陣給出了使網路控制系統漸近穩定的充分條件。 -
Methods of sampling and test for carbonaceous materials used in aluminium manufacture - electrode coke - determination of grain stability of calcined coke using a laboratory vibration mill
制鋁工業用炭素材料抽樣和試驗方法.第2部分:電極焦炭.第15節:使用實驗室震動粉碎機測定焙燒焦炭的結晶穩定性 -
And then the stability and the stable error response of the dpll are analyzed. there is an obvious doppler shift frequency offset in the received signal with flight at a high speed, in the dissertation the uniform sampling second - order dpll is used to remove the frequency bias for its excellent high - pass characteristic of the error transfer function
由於高速飛行的遙測目標在接收信號中會出現較大的多普勒頻率分量，而典型均勻采樣二階數字鎖相環dpll （ digitalphase - lockedloop ）的誤差函數具有高通特性，所以本文提出一種利用其高通特性來去除多普勒頻率分量的新方法。 -
This system is realized by cpld which can get rid of the disadvantages in one - time design including property liable to jamming, long sampling period, and poor working stability. its sampling period is up to 500ns at least and output delay is only 19. 5ns. a stable period of pulse coming out of quadruple - frequency differential circle belongs to it
完成了用vhdl硬體描述語言對全數字轉速位置測量子系統的設計，並用max ? plusii軟體進行了編譯和波形模擬，在cpld （ max7000 ）得到實現，該系統克服以往設計中存在的易受干擾、工作穩定性差、采樣周期太長等的缺點，輸出延時僅為19 . 5ns ，采樣最低周期可達到500ns ，且四倍頻微分電路獲得的脈沖周期穩定。 -
In order to get the stability of model - based networked control system with output feedback and transmission delay, we use a state observer and an inner model to estimate the states of the plant controlled between the sampling times, and the knowledge of the system construction and state substitutions at sampling times
摘要為研究基於模型的輸出反饋網路控制系統在傳輸時延情況下的穩定性，以得到固定時延系統采樣周期的最大波動范圍，在系統中，採用狀態觀測器及內設模型估計采樣時刻之間被控對象的狀態，並充分利用系統結構和在采樣點狀態更新的信息。 -
The delta operator is introduced to the h9 filter problem of discrete system, which is significant for the anti - disturbance of the high - speed sampled system. in the delta domain system, the coefficient of the gain matrix of the estimator is approaching to that of the continuous - time system. which not only guarantees the stability and the performance of the system but also avoids the also avoids the defects the z domain when the sampling periods is approaching to zero
濾波問題中，這對于高速采樣系統的抗干擾及狀態估計具有很大的理論及實際意義，當采樣周期趨近於零時，估計器的反饋增益矩陣及閉環極點趨近於連續系統的反饋增益矩陣及閉環極點，從而可以採用離散的設計方法獲得連續系統的性能，既保證了系統的性能及穩定性，又避免了z域內設計的缺點。 -
For the delta domain systems with the discrete systems, we analyze and design the hx controllers using lyapunov stability theory. the results contain the sampling period and show that when sampling period is decreasing to zero the system is stable all the same while the performance of the discrete - time system is approaching to the continuous - time system
針對delta域內的離散定常系統，本文採用統一的李亞普諾夫第二穩定方法，對其進行了h _狀態反饋分析和設計，結論得到一個含有采樣周期的線性矩陣不等式，當采樣周期趨近於零時，系統仍然穩定，離散系統的性能趨于連續系統。
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