active variable 中文意思是什麼
active variable
解釋
主動變量-
The visx star star 4 combines the technologies of customvue wavescan aberrometer, activetrak 3 - d active eye tracking, iris registration, variable spot scanning and variable repetition rate to provide customized wavefront treatment. in the past, standard lasik corrects refractive errors, such as myopia, hyperopia and astigmatism which are so - called low order aberrations
威視visx star 4是結合前波前像差分析儀3d眼球主動追蹤系統虹膜定位系統ir iris registration及智慧型超微光斑等技術去提供個人化激光矯視療程。在過去，標準lasik可解決近視遠視及散光等所謂低階像差問題。 -
Several semi - active control algorithms used in the semi - active suspension system with mr dampers are proposed and developed including the " on - off " voltage controller, the continuously linear variable voltage controller, the modulated continuously linear variable voltage controller based on " sky - hook " damping concept and the hybrid controller based on the combination of " sky - hook " damping concept and " ground - hook " damping concept and the fuzzy logic controllers using measurements of the relative displacement between the sprung and unsprung mass or the absolute acceleration of the sprung mass as the input variables of fuzzy logic controllers. the simulation models were prepared in matlab ? simulink ? fuzzy toolbox programs. the experiment setup of the semi - active suspension system with mr dampers in the lab has been designed and developed
根據磁流變阻尼器特性和對懸架系統動力學特性的規律性研究，為磁流變阻尼器設計了基於「天棚」阻尼控制概念的「 on - off 」 、線性連續和修正的線性連續控制策略，基於「地棚」阻尼控制概念的磁流變阻尼線性連續控制策略， 「天棚」阻尼和「地棚」阻尼控制概念線性組合起來的磁流變阻尼混合控制策略，根據模糊控制原理設計了以簧載質量和非簧載質量間相對位移或簧載質量加速度分別作為輸入變量的模糊邏輯控制器用於磁流變阻尼半主動懸架的智能控制。 -
For a class of series - wound active power line conditioner the design approach law of a new fuzzy integral sliding mode variable structure control is presented. this method adjusts power electronic switch in order to achieve anticipated balance volt, finally makes active power line conditioner not only possess good robustness of variable - structure control and decrease vibration to the most but also increase the steady state precision. series - wound aplc adopted this control method possesses good dynamic and steady state performance
針對串聯型有源電網調節器運用變結構控制策略，調節電力電子開關模式，以獲得預期的平衡電壓，對串聯型有源電網調節器提出了模糊積分變結構控制方法，使串聯型有源電網調節器既保持了常規滑模控制強魯棒性的優點，又減弱了滑模控制的抖振，提高了系統的穩態精度，使系統具有良好的動態和靜態性能，模擬試驗表明該控制策略是一種十分有效的控制方法。 -
Because benign social psyche is an important variable of economic and social transformations, it has great active functions on social development, and it also is a momentous condition of social stability and social order standard
因為，良好的社會心理是經濟社會轉型的重要變量，對社會發展有巨大的能動作用，是社會穩定和社會秩序規范的重要條件。 -
Parametric active contour model to deal with automatic segmentation of weak edge medical image. based upon analyzing balloon force model, a minimum variation snake model is proposed and successfully applied to segmentation of weak edge medical image. in the model, variable force incorporating the information of foreground and background regions replaces constant force in the balloon snake model
高斯力和氣球力等傳統的參數活動輪廓模型難以處理弱邊界醫學圖像自動分割問題，在氣球力snake模型基礎上，提出最小方差snake模型，該模型將氣球力snake模型中的恆定氣球力修改為包含區域信息的變力，以目標和背景兩區域具有最小方差為準則，引導輪廓曲線運動。 -
The stator of aceg is connected to the grid and the three symmetrical excitation windings in the rotor are fed by converter. the magnitude and frequency and phase and phase sequence of excitation voltage can be controlled, so the magnitude and position of excitation mmf as well as the speed of rotor can be controlled. therefore, acegs have superior performances by contrast with conventional synchronous generators and induction generators, such as upstanding stability, power generation of variable speed constant frequency ( vscf ), adjusting active power and reactive power independently, and absorbing lag reactive power deeply
交流勵磁發電機的基本結構與繞線式異步電機相同，其定子側接電網，轉子上採用三相對稱分佈的勵磁繞組，由變頻器提供對稱交流電勵磁，且勵磁電壓的幅值大小、頻率、相位、相序都可根據要求加以控制，從而可以控制發電機勵磁磁場大小、相對于轉子的位置和電機的轉速，使得交流勵磁發電機具有良好的穩定性及轉速適應能力、獨立的有功與無功調節能力和較強的進相運行能力，性能超越傳統同步發電機和感應發電機，因而有著廣闊的應用前景。 -
Tlcd semi - active control methodology for eccentric buildings using discrete - time fuzzy variable structure law
窄限法得到的整體可靠性指標與點估計法 -
For a class of shunt - wound active power line conditioner, based on analysis of mathematical model of system and target of control, the algorithm of fuzzy variable structure sliding mode control is presented. the control algorithm can avoid complicated calculation of harmonic electric current in traditional control algorithm, and realize the feedback control of electric current. the algorithm is simple and easily implemented
針對一類並聯型有源電網調節器在分析系統數學模型和控制目標的基礎浙江大學博士學位論文上，提出了模糊滑模控制策略，避免了傳統控制方法中復雜的諧波電流計算，實現對電源電流的閉環控制，該演算法簡單、易於實現，模擬結果證實了變結構滑模控制的有效性。 -
In this paper. the question of compound guidance about mid - long range air - to - air missle to be considered. the main contributions are as follows : first, two midcourse guidance laws are given. that is optimally predictable pn micourse guidance, which is suitable for middle range missle, and singularly perturbed midcourse guidance. which is suitable for long range missle guidance ; then two terminal guidance laws are given. that is variable structure guidance, which is suitable for passive radar guidance. and optimal guidance which is suitable for active radar guidance ; and then the error sourses of hand - off are researched, the hand - off law is given at the time ; fmally, the midcourse guidance laws and terminal guidance laws are tested by simulation, and the whole trajectory simulation are given through hand - off law, and the results are satisfied
主要工作如下：首先研究了用於中遠程空空導彈復合制導的兩種中制導律，即用於中程導彈的最優預測比例導引中制導律和用於遠程導彈的奇異攝動中制導律，它們均有很好的中制導性能，能夠滿足中末制導的交班要求；接著研究了兩種末制導律，即用於被動雷達末制導的變結構制導律和用於主動雷達導引頭的最優末制導律，均適用於復合制導末制導段；然後分析了中末制導的交班誤差源，討論了用於復合制導的交接律；最後通過模擬，驗證了提出的中制導律和末制導律，結合提出的交接規律，在不同的情況下對中末制導段彈道進行了模擬驗證，結果證明文中提到的中末制導律能夠達到性能指標要求。 -
Because of its advantage of robustness and easy realization variable structure sliding mode control has been applied gradually in active power filter
滑模變結構控制器具有魯棒性好、設計實現方便等優點，已被逐步應用於有源電網濾波的控制之中。 -
In addition, taking one engine mounts design into account, the paper investigates and compares some types of design schemes and shows that semi - active continuous variable damper is feasible and applicable. the numerical simulation results further proves that the continuous variable sky - hook damper is able to effectively isolate the engine vibration, so the damper has promising value in the engineering field
另外，以某發動機懸置的設計為背景，比較了各種設計方法，論證出半主動連續可控阻尼懸置為最佳的方案，並用簡化的懸置模型進行了數值模擬分析，通過得到的振動性能的比較，表明按天棚阻尼設計的連續性半主動懸置系統，能夠有效地隔離發動機振動，有很好的工程應用前景。 -
Because of these characteristics, the variable stiffness sma bearing used in rotor system can be designed, and then the stiffness of system can be varied by active control technology when the rotate speed of system is near the critical rotate speed to reduce the maximum vibration amplitude of rotor system
利用這些特性可以設計出用於轉子系統的可變剛度支承，通過結合主動控制技術，在臨界轉速附近改變系統剛度，從而降低系統在臨界轉速時的最大振幅。本文研究利用形狀記憶合金對轉子系統振動進行主動控制。 -
This dissertation is concerned with the applications of variable structure control ( vsc ) of active magnetic bearing ( amb ) to high speed milling spindles and flexible rotor systems
全文工作取得如下創造性成果:首次將變結構控制策略用於磁懸浮機床主軸的主動控制。 -
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。 -
The damper with dynamically variable damping properties is one of the key elements for semi - active suspension systems
半主動控制懸架系統的關鍵之一是可實時調節的阻尼器。 -
Variable rate semi - active suspension is a nonlinear system, but groovy control methods take on states limits when it is applied to the system
變剛度半主動懸架是一個非線性系統，而常規的控制策略應用於非線性系統具有一定的局限性。 -
Seismic design method of structures with active variable stiffness systems
變剛度半主動控制結構的抗震設計方法 -
T. kobori, m. takahashi. seismic response controlled structure with active variable stiffness system [ j ]. earthquake engineering and structural dynamics. 1993, 22 ( 9 ) : 25 - 41
歐進萍.土木工程結構振動的智能控制研究與發展[ c ] .國際結構控制與健康診斷研討會論文集. 2000 （ 12 ） : 103 -
Hybrid control combined the passive control, active control and semi - active control is more effective and more reliable for improving safety of building under the earthquakes. in this paper, a detailed theoretical analysis and numerical simulation were carried out for a new kind of structural vibration control system base - isolation & active variable stiffness / damping ( bi & avsd )
其中的混合控制選用被動控制、主動控制或半主動控制中的兩種（或兩種以上）控制技術相結合，吸收各種控制技術的優點，避免其缺點或存在的問題，使結構達到減震效果好，安全可靠，造價經濟，現實可行等多重效果。 -
In the recent years, a new smart damper, magnetorheological ( mr ) damper, is developed for vibration control, which is made of smart mr fluid. mr damper has an excellent variable damping property and its damping force can be changed by adjusting voltage applied to damper. therefore, semi - active control can be implemented with the damper
近年來，一種由高科技亞納米材料?磁流變體製成的磁流變智能阻尼器（ magneto - rheological （ mr ） damper ）問世並用於實際工程減振，該阻尼器的阻尼特性隨輸入電壓的變化而改變，具有良好的可變阻尼特徵，可實現半主動控制。
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