discrete pulse 中文意思是什麼
discrete pulse
解釋
分離脈沖-
A circuit topology of the inverter with duty cycle extended active clamp forward style high frequency pulse dc link is adopted by each independent inverter. each inverter is cascaded by a circuit with duty cycle extended active clamp forward style high frequency pulse dc link and a dc / ac inverting bridge. the control strategy of voltage mode pwm forwardback is adopted by the former, and the control strategy of three - state discrete pulse modulation ( dpm ) hystersis current is adopted by the later
每個獨立的航空靜止變流器採用占空比擴展有源箝位正激式高頻脈沖直流環節電路拓撲，由占空比擴展有源箝位正激式高頻脈沖直流環節電路與dc ac逆變橋級聯而成，前級採用電壓型pwm前饋控制技術，后級採用三態dpm電流滯環控制技術。 -
In the positioning servo - system, which generally is configured by the d. c. pulse width modulator ( pwm ) velocity governing system and position servo - loop, the parameter perturbance of pwm velocity loop really exist by reason of such as the load behavior ; power voltage supply ; operating setting value, etc. 1, 2 ， and it cannot be ignored. by using the identification technique to form the mathematical model of the system, authors have confirmed the facts. therefore, to design the discrete sliding mode controller ( dsmc ) of the positioning servo - system, the perturbed parameters value bounds of the pwm velocity loop, which is as the controlled plant of position servo - loop, should be accounted. consequently, the design principle of dsmc for accounting system with parameter perturbance is proposed by the authors. the proposed method can ensure the stability of system with parameter perturbance and the behavior of non - overshoot, fast precise positioning. in order to reveal the effects of the design method, the comparative research work is done by the authors. also, it has been tested in an industrial experiment, the results proved it is satisfactory
由直流脈寬調速系統（ pwm ）和位置環構成的定位系統中，速度環的參數隨負載特性；電網電壓；給定工況而攝動是不容忽視的.作者通過系統辨識建模也證實了這一事實1 ， 2 .因此在設計位置環的離散滑模控制時，必須針對速度環（即位置環的控制對象）的參數攝動范圍採用「對象參數攝動離散滑模控制器的設計方法」 ，以確保系統在參數攝動時的穩定性和快速、無超調、準確定位的優良動態品質.為剖析該設計方法的控制效果，本文作了對比性研究，並將該設計方法用於工業試驗中，取得了滿意的結果 -
The simulation results are all in accordance with the theory analysis, some even better than the theoretical specification. the basic principle of discrete pulse frequency modulation on step - up dc / dc converter is testified, and this effort accumulates more experience to design
在完成電路原理分析與電路設計的基礎之上，應用eda軟體hspice對各個子電路模塊和整體電路進行了功能模擬及量化模擬，模擬結果均達到或優于預定指標。 -
The temperature range is - 30 ~ 80. the topology of the step - up dc / dc converters and its basic principle is first analyzed in this thesis. then based on the conventional pfm control scheme, a discrete pulse frequency modulation is presented and the state space average model related to the ccm ( continue current mode ) and dcm is established
然後在傳統的脈沖頻率調制方式的基礎上，分析了一種離散脈沖頻率調制方式，並建立了這種調制方式下升壓型dc / dc變換器在電流連續（ ccm ）工作模式和電流斷續（ dcm ）工作模式的狀態空間平均模型。 -
High - frequency link power converters are receiving increasing attention. when the input frequency of ac - ac converter is quite high, such as 20khz or above, in order to make sure the converter switching action is restricted to the zero crossing point of the link voltage, the switching cycle becomes discrete pulse spectrums, however, the conventional pwm converters are ruled out because they would fail either to the efficiency or the low - distortion criteria
當交-交變頻器的輸入頻率非常高，通常為20khz時，為了在零電壓條件下實現逆變器開關管的通斷，變換器的開關時刻必須選擇在高頻交流電壓脈沖為零時，這意味著變換器開關時刻在時間軸上成為不連續的點，而常規的硬開關pwm變換器是將開關時刻選擇在任意時刻。 -
Pulse step return loss from measurement in the frequency domain using the inverse discrete fourier transformation
反向不連續傅里葉傳輸的頻率區域內脈沖分步回損測量 -
When the performance degradation is caused by the discrete cumulative damages, the degradation failure model based on renewal process is proposed and used to analyze the reliability of metallized film pulse capacitors in the laser device. when the degradation process is continuous, two models based on wiener - einstein and gamma processes are presented respectively. because it is difficult to obtain an analytical expression of the failure model using the latter method, we present a failure model based on monte - carlo simulation
根據該模型的特點，給出了基於參數回歸分析的統計推斷方法，分別提出基於比例危險模型的競爭失效分析方法和基於位置-尺度模型的競爭失效分析方法; （ 4 ）對于隨機失效閾值問題，研究並給出了相對失效標準下的退化失效模型和分析方法;對強度退化的動態應力-強度干涉失效進行分析，提出了周期性應力作用下的動態應力-強度干涉失效可靠性模型和復合應力作用下動態應力-強度干涉失效可靠性模型。 -
In this paper it is founding that at the aspect of extracting characteristic information of the pulse signals, the usual algorithm of the cwt has better superiority than the algorithm based on the discrete mellin transform
在分析中發現，在提取吸毒者脈象信號中病變的異常信息方面，連續小波變換的一般演算法比藉助離散梅林變換的演算法具有更好的效果。 -
By means of the x - y scheme and three - dimensional of the cwt, finding the significant difference between the heroin addicts and the healthy persons, a primary criterion was obtained. upon which the 15 heroin addicts were identified and 2 healthy persons were misjudged. this paper have deduced and proved the theorems and formulas of the discrete mellin transform, and applied the cwt which based on the discrete mellin transform to analyze the pulse signals of 15 heroin addicts and 15 healthy persons
通過連續小波變換的二維及三維立體圖，找出海洛因吸毒者與正常人之間的顯著差異，並對每種基本小波的分析給出了初步的判據，根據該判據，獨立地給出了相同的判斷，均為正常人z01和z10被誤判為吸毒者，而15例吸毒者全被檢測出來。 -
The direct torque control theory is a kind of new control method after vector control theory in ac control field. it calculates and controls the torque and the flux of ac electromotor in stator coordinate using the voltage space vector. adopting the stator magnetism field direction method, it recurs to discrete pang - pang control producing pulse width modulation signal and controls the switch state of the transductor when better quality steady - state performance is produced
直接轉矩控制技術是繼矢量控制技術之後交流調速領域中新興的控制技術，它採用空間矢量分析的方法，直接在定子坐標系下計算並控制交流電動機的轉矩和磁鏈，採用定子磁場定向，藉助于離散的兩點式控制產生脈寬信號，直接對逆變器的開關狀態進行最佳控制，以獲得轉矩的高動態性能。 -
At first the switching power amplifiers of the discrete components are researched and some application circuits for amb power amplifiers are developed. secondly the integrated power amplifier is discussed, a new type of pulse width modulation ( pwm ) power amplifier applying sa60 is designed and used in amb system. in the end of the dissertation several synthesized tuning measures and some experimental results for amb system are presented
首先討論了分立元件開關功率放大器原理並研製了在電磁軸承中的應用電路；其次討論了集成功率放大器，應用sa60設計了新型脈寬調制功率放大器並在電磁軸承中應用；在論文的最後給出了電磁軸承系統綜合調試的一般方法及調試結果。
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