loop effect 中文意思是什麼
loop effect
解釋
毛圈效應-
On the other hand, the effect of the material and structure on the diamagnetic loop is detailedly checked during engineering design
詳細地敘述了逆磁線圈工程設計中考慮的材料選擇和結構設計對逆磁線圈的影響。 -
It is generally impossible to obtain the analytic optimal guidance law for complex nonlinear guidance systems of homing missiles, and the open loop optimal guidance law is often obtained by numerical methods, which can not be used directly in practice. the neural networks are trained off - line using the optimal trajectory of the missile produced by the numerical open loop optimal guidance law, and then, the converged neural networks are used on - line as the feedback optimal guidance law in real - time. the research shows that different selections of the neural networks inputs, such as the system state variables or the rate of los ( line of sight ), may have great effect on the performances of the guidance systems for homing missiles. the robustness for several guidance laws is investigated by simulations, and the modular neural networks architectures are used to increase the approximating and generalizing abilities in the large state space. some useful conclusions are obtained by simulation results
對于復雜的非線性導彈制導系統，很難求得其解析的最優制導律，只能求得開環的數字解，不能適用於具有時變不確定性的導彈制導系統.利用神經網路的學習和推廣能力，對開環的數字最優制導律進行離線的學習，作為閉環的神經最優制導律在線應用.研究分別選擇系統狀態變量和視線角速率等不同的神經網路輸入對制導系統性能的影響，以及各種制導律的魯棒性問題，並採用模塊化神經網路結構提高神經網路的學習和推廣能力，模擬結果得到一些有益的結論 -
Within the framework of the tim ( transverse field model ), using the eft ( effective field theory ) and the mft ( mean field theory ), considering the long - range effects and the interfacial effect, we studied the transition properties of the ferroelectric thin film, pyroelectric coefficient and dielectric susceptibility and triple hysteresis loop of the ferroelectric bilayer structure theoretically
我們應用平均場、有效場等方法，在橫場伊辛模型框架內，考慮贗自旋間長程相互作用和界面效應，對鐵電薄膜、雙層薄膜的相變、熱釋電、介電，以及電滯回線等性質進行了較深入的研究。 -
For the purpose of boosting voltage, because of the effect of the load r on q, the proposed close - loop control method is the best choice to ensure the stable output voltage
當利用諧振網路提升整機輸出電壓時，由於負載r對q值的影響，因此必須採用所提出的閉環控制方法才能保證良好的穩壓功能。 -
The work module of rudder was discussed and studied by simulation in side jet and aerodynamic compound control manner, the effect on guidance accuracy by control cycle of attitude control engine and action cycle of control loop was simulated
重點對採用燃氣動力氣動力復合控制方式中舵系統的工作模式進行了探討及模擬研究，對姿控發動機控制周期及控制迴路工作周期對制導精度的影響進行了初步模擬研究。 -
The carrier wave is modulated directly by the baseband signal at several frequency point in l band and s band. firstly, this paper clarifies the theory of i / q modulation, elaborates evm and acpl, and analyzes the effect of amplitude and phase unbalance and dc offset on evm. secondly we review the basic principle of phase locked loop and it ’ s composing parts, including the basic conception and design method of pll frequency synthesizer, especially introduce the charge pump pll frequency synthesizer in detail
首先，在闡述i / q正交調制基本原理的基礎上，通過對誤差矢量和鄰近通道功率泄漏的詳細分析，定性、定量地討論了各種非理想電路因素（如相位不平衡、幅度不平衡、直流偏差等）對調制器性能的影響;其次，介紹了鎖相環的工作原理和基本組成部分，包括鎖相環的設計和環路濾波器的設計，特別詳述了電荷泵鎖相頻率源;第三，介紹了採用直接調制技術模擬衛星信號的射頻前端的設計;最後，對整個直接射頻調制系統進行測試，結果基本上達到了課題要求。 -
Because massive harmonic interference in the electrical network, it causes signal - sampling to include the very big harmonic in the measurement system, for eliminating measurement result influence by harmonic, the paper has an in - depth study of fourier transformation harmonics analysis measurement principle, analysis the forming reasons of frequency spectrum leakage and railing effect during measurement, achieves phase locked loop and frequency multiplier technique to realize integer - period synchronous sampling and eliminate impact of frequency spectrum leakage and railing effect in the result of measurement, and investigates in depth theory on phase locked loop and frequency multiplier technique, gives the method of realizing phase locked loop and frequency multiplier technique
由於電網中存在大量的諧波干擾，導致測量系統中取樣信號也含有很大的諧波，為了消除諧波對測量結果的影響，論文深入研究了傅立葉變換諧波分析法的測量原理，分析了測量中頻譜泄漏和柵欄效應形成的原因，提出了採用鎖相環倍頻技術實現信號的整周期同步采樣，消除頻譜泄漏和柵欄效應對測量結果的影響，並對鎖相環倍頻技術的理論進行了深入研究，給出鎖相環倍頻技術的實現方法。 -
The study has completed the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use it is a variable frequency adjustable speed system with a open - loop control of rotational speed, which consists of voltage - controlled oscillator circulating assign device inverter circuit and two - phase induction motor a accurate mathematical model is set based on the whole system, and simulator program of dynamic and steady condition is established, which is used to calculate the dynamic and steady performance by kron and symmetrical coordinate converter by simulator calculation and experimental research with specific parameter of the system, a comparison is made between predicted and experimental characteristics, experimental measurements are shown to compare closely with corresponding theoretical result it is compared with some variable frequency adjus table speed system comprising inverter and single - phase induction motor from the system efficiency torque pulsation and the effect of two - phase inverter capacitance based on the conclusion, harmonic cancellation pulse width modulation control of a two - phase inverter - fed induction - motor drive system is researched, which cancelled the low harmonic and improve the system performance
通過對電機的kron變換和對稱分量變換，建立了系統較精確的數學模型，編制了系統動態及穩態運行的模擬計算程序分別計算系統的動態和穩態性能。通過對系統的具體參數進行了模擬運算和實驗研究，實驗和模擬結果進行比較，說明實驗和理論較為一致，並從系統效率、轉矩脈動及兩相逆變器電容的影響等方面與各種逆變器和單相異步電動機組成的變頻調速系統加以比較。在此基礎上，對兩相逆變器供電-異步電動機系統使用諧波抑制pwm控制進行了研究，由於減少了低次諧波，改善了系統性能。 -
And introduce the effect of fix - gain filter on angle noise filter, forming velocity loop by replacing sensor for perfecting system emendation and suppling angle interpolation
論述了在濾除角度噪聲，替代角速度傳感器構成速度環路完善系統校正，提供角度插值條件等方面的作用。 -
Flat - loop effect and hysteresis property of the rubber bearings
鉛芯橡膠支座滯回曲線的扁環現象及其恢復力模型 -
In this article, introduce the important meanings of a - b effect, first is a have physics factors, second is wave function phase factor is connected with geometrical factor in ( b = 0, a 0 ), through a - b effect, we know : electromagnetic field vector e, b is local quantity, electromagnetic potential a, is global quantity, adding a, description and by the way of loop integral, electromagnetic field " effect is completely descripted
本文介紹了有重要歷史意義的a - b效應， a - b效應揭示了兩點物理觀念的變革：一是電磁矢勢有物理效應。二是在無場強但有磁矢勢（ b = 0 ， a 0 ）的區域，波函數的相位因子與其運動空間結構有關。 a - b效應顯示； e 、 b是局域量， a 、是總體量，只有加入a 、之後的描述，並通過a的環路積分，才能對電磁場的作用做出完全準確的描述。 -
This thesis discusses some effective algorithms that appear recently in distribution power flow calculation at length, for instance, back / forward sweep method, zbus method, newton zbus method with modified method, loop - impendence equation method and so on. it gives basic calculation theories, calculation steps and some particular regarding issues of every algorithm, according to many examples validate the effect of algorithms and finally obtain the characters, rang of use, virtue and shortcoming of every algorithm
本論文詳細討論了近來出現的配電網路潮流計算的各種有效演算法，如前推回代法、 zbus法、牛頓zbus法及其改進、迴路阻抗法等，給出了各種演算法的計算基本原理，步驟以及應該注意的問題，並通過大量的算例進行驗證，從而通過比較得出各種演算法的特性、應用場合和優缺點。 -
Sb2011 precise decade inductance box adopts loop inductance coil, emc screen, special temperature compensation structure, aging technology, and whole - seal moistureproof measure therefore, it possesses many special characteristics, such as strong anti electromagnetic capability, little effect by humidity and temperature, perfect stability, reliable performance, strong adaptability, novel structure, and easy to operate
Sb2011型精密十進位電感箱採用鐲環形電感線圈及電磁屏蔽，獨特的溫度補償結構與老化處理工藝並採取全封閉式的防潮措施，具有抗電磁干擾能力強、受濕度與溫度影響極小、穩定性好、性能可靠、適應性強、結構新穎、操作方便等獨特優點。 -
The design of decentralized robust reliable controller is studied for a class of large - scale system with parametric uncertainty, control laws are designed that guarantee close - loop asymptotic stability and reduction of the effect of an augmented disturbance input of an augmented disturbance input on the controlled output of a prescribed level, not only when the system is operating properly, but also under actuator failures
摘要針對一類具有不確定性關聯大系統，研究其魯棒分散可靠狀態反饋控制器的設計方案，採用該方案設計的可靠控制系統，不僅在系統運行良好的條件下，而且在系統的執行器元件出現失誤的情況下，仍能確保系統內部狀態的穩定性，並同時滿足給定的性能指標。 -
On one hand efficacy of a drug can amount to ill place to produce remedial effect, still can make main and collateral channels of loop of property of a medicine is passed to internal organs of the body, in order to move yin and yang of solar term blood, fu zhengqu evil, promote the refreshment of airframe function thereby, achieve treat a disease sanitarian purpose
一方面藥力可達病處發揮治療作用，還可使藥性循環經絡傳至臟腑，以調節氣血陰陽，扶正祛邪，從而促進機體功能的恢復，達到治病保健的目的.中藥蒸汽療法是根據蒸汽藥力導入中藥的原理，利用中「健康豐足桶」的蒸汽發生器裝置，將中藥藥液蒸汽霧化，通過蒸汽導管把蒸汽輸入浴足桶，桶內的出汽球裝置和腳踏凳上散汽網裝置，疏導中藥蒸汽熏蒸雙足和小腿部位。 -
In the part of the experimental designs, a experimental configuration of an unstable cavity by use of two bbo crystals compensating the walkoff effect and pumped by reflection is presented, and two set of controlling systems designs of open and closed loop are also presented ; we realized closed loop controlling system of bbo optical parametric oscillator tuning system, by using american general scanning inc. ' s controller to control bbo crystal ' s rotation, and scaled the output wavelength with charge coupled device
在實驗設計上給出了利用兩塊bbo晶體補償走離效應返回式泵浦非穩腔的實驗設計，設計了開環和閉環兩套控制系統。通過使用美國通用掃描公司的掃描頭控制bbo晶體的轉動，用ccd對bbo - opo輸出波長進行標定，實現了bbo - opo調諧系統的閉環控制，相對波長調諧誤差小於0 . 04 ，並給出了354 . 7nm泵浦的類相位匹配bbo - opo輸出波長隨晶體轉角變化的理論和實驗曲線。 -
Then according to the emphasis of the design, went deeply into the theory of pll frequency synthesizers widely used, described pll ’ s working principle, structure and several types in detail, and made research and analysis of pll frequency synthesizers ’ phase noise, including the effect of the active loop filter on the phase noise, and give some methods to make improvement as well, such as changing loop filter form, reducing divide number, and increase phase detector frequency, etc. then paper introduced the principle character and phase noise analysis of direct digital frequency synthesizer ( dds ) and injection phase lock circuit, which are also important circuits in the design
論文首先對幾十年頻率合成器的發展進行概述，而後針對本次設計的重點，對應用較為廣泛的鎖相頻率合成理論進行了深入的探討，詳細介紹了鎖相環的工作原理、組成結構和鎖相類型，並對鎖相頻率合成器的相噪特性進行了研究分析，包括有源環路濾波器對于相噪的影響，提出了改善相位噪聲的幾點措施:改善環路形式、降低分頻數、增大鑒相頻率等。接著介紹了直接數字頻率合成器（ dds ）和注入鎖相電路的原理特點以及相噪分析，它們也是本次設計的重要電路。 -
Hysteresis loop of ferromagnetic materials are measured by using surface magneto - optic kerr effect, and the kerr rotation angle is obtained
摘要用表面磁光克爾效應測量鐵磁材料的磁滯回線，並求得在飽和狀態下的克爾旋轉角。 -
The one - loop vacuum polarization is calculated for untwisted and twisted scalar fields in a flat space - time with the topology s1 r3. the effect of vacuum polarization upon photon propagation is considered. it is found that for the untwisted scalar field some photon modes acquire a positive topological mass, thus travelling at a subluminal speed ; but for the twisted scalar field some photon modes get an imaginary topological mass and travel at a superluminal speed
本文中我們首先計算了在拓撲結構為s ~ 1 r ~ 3的非minkowski時空中扭曲標量場和非扭曲標量場的真空極化，然後考慮了真空極化對光子傳播的影響，我們發現除了光子的極化方向和傳播方向都垂直於緊致化方向的情形之外，非扭曲標量場的真空極化使所有其他的光子模式都獲得實的拓撲質量從而導致這些光子以亞光速傳播；但是，扭曲標量場的真空極化使光子獲得虛的拓撲質量以致他們以超光速傳播。 -
The dissertation presents the combined theoretical, numerical and experimental studies on the experimental modeling of the actuator, the design of test rig and control system, the modeling of two - dimensional airfoil aeroelastic system, the control design of active flutter suppression, and the effect of group delay in the digital filter on the stability of aeroelastic closed - loop system
本文通過理論分析、數值模擬與風洞實驗相結合的方法，研究了超聲電機作動器建模、翼段顫振實驗裝置和控制系統設計、二維翼段氣動彈性系統建模、顫振抑制控制律設計以及數字濾波器群時延對顫振抑制閉環系統穩定性影響等問題。
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