perturbed system 中文意思是什麼
perturbed system
解釋
攝動組-
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 -
We analyze the influences of the perturbed energy - level space and superposion, laser power and intermediate level offset on quantum interference. experimentally, in the sodium dimmer rhomb - type four - level system with a pair of perturbed levels, the interference enhancement of two - photon absorption caused by coherent superposition of the perturbed levels is experimentally observed
分析了微擾能級的間隔和疊加程度、激光功率以及中間能級的失諧對量子干涉效應的影響，實驗上觀察了包含有一對微擾疊加中間能級的菱形四能級系統中的雙光子激發現象，發現微擾能級的相干疊加可增強雙光子吸收。 -
The direct perturbation technique, proposed recently, successfully deals with a kind of perturbed chaotic system and obtains their formal solutions for each order
最近發現，通過直接微擾法可以得到一類微擾作用下的混沌系統的形式解。 -
When the parameters of a tagaki - sugeno ( t - s ) fuzzy system are perturbed with random noise, the system turns to be a stochastic t - s system. essentially, it is a nonlinear stochastic differential system. the second part of the dissertation focuses on the stability analysis and control of the stochastic t - s systems
設控制對象是用tag山一sugeno （ t . s ）模糊模型表示的非畢蜂琴攀{當模型參姆到統計特徵已知的瞰嗓桿擾吟一就成為一個瞬娜咚模糊模型，本質上它是一個非線性隨機微分系統。 -
It is found that the fwm field can cause the asymmetry of electromagnetically induce transparency profile. in addition, the effect of different propagating orientations of probe field on the electromagnetically induced transparency is also discussed. in the molecular multi - level system with the perturbed superposition levels, we discuss the electromagnetically induced transparency, spontaneous emission enhancement, double dark resonance and double electromagnetically induced transparency by using the density matrix equation under weisskopf - winger approximation and dressed - state density matrix equation
針對實際的實驗條件，考慮了一種影響量子干涉的新的因素-四波混頻場，研究了四波混頻場對雙光子探測的-型能級體系的eit的影響，發現四波混頻場能夠導致雙光子探測的eit線型的不對稱，在此基礎上，討論了不同探測場的傳播方式對eit的影響，針對分子中實際存在的包含有微擾能級的不同多能級系統，我們分別採用綴飾態繪景下的密度矩陣方程和weisskopf - wigner近似下的密度矩陣方程詳細地討論了電磁感應透明、自發輻射的干涉相消和相長、雙暗態共振和雙電磁感應透明現象。 -
The result is that the one - photon detuning will be limited for obtaining the expected nonlinear optical effects in the system based on perturbed eit
結果表明，在具有微擾的eit系統中，為了獲得所期望的光學相千效應，單光子失諧量的取值范圍受到明顯的限制。 -
In the first part, hilbert ' s 16th problem and the studies on it are introduced, and the results of zq - equivariant vector fields of degree 5 ( q = 2, 3, 5, 6 ) are given. in the second part, the definitions of zq - equivariant vector fields and the method of detection functions are stated, and all the forms of nontrivial zq - equivariant planar polynomial vector fields of degree 7 are obtained. in the third part, a concrete numerical example of zt - equivariant perturbed planar hamiltonian system of degree 7 is constructed, and for the unperturbed vector field having maximal number of centers, its global phase portraits are analyzed ( having at least 9 topologically different phase portraits ). then, for a given parameter group, its phase portrait trend is studied
第一部分介紹了hilbert第16問題以及它的研究與發展現狀，給出了近年來利用李繼彬提出的判定函數法得出的z _ q -等變（ g = 2 ， 3 ， 5 ， 6 ）的5次系統關於它的第二部分的研究結果；第二部分介紹了z _ q -等變向量場以及判定函數法，給出了7次平面多項式系統的所有非平凡z _ q -等變向量場具有的形式；第三部分給出了一個7次平面擾動hamilton系統，研究了它的具有最大中心數的未擾動系統（ z _ 7 -等變）的全局象圖，得到了9種不同的拓撲圖形。 -
First, we take the analysis of phase - plane on the invariant plane for the perturbed and unperturbed systems. next, we applied the singular perturbation theory to establish the persistence of invariant manifolds, as well as the " fiber represent at iones " of these manifolds. finally, by using the global integrable theory of the unperturbed system and melnikov measurement we obtai n the existence of homoclinic orbits for the cqs equation under the generalized parameters conditions
首先，我們在常值平面上對擾動和未擾動系統進行相平面分析；然後利用奇異擾動理論討論不變流形的保持性，並給出不變流形的纖維表示；藉助于未擾動系統的可積結構和melnikov測度，我們得到了三次?五次非線性schr （ -
In this paper periodically perturbed hopf bifurcation to lienard equation with limited time delay is sdudied in detail. that is, the influence of small periodic perturbations on system exhibiting hopf bifurcation is sdudied. in particular, the excitation frequency and the critical natural frequency of hopf bifurcation in the cases of harmonic resonance. subharmonic resonance, ultraharmonic resonance, and ultrasubharmonic resonance is discussed. it is shown that in some parameter regions the sestyms exhibit harmonic solution bifurcation, subharmonic solution bifurcation, ultraharmonic solution bifurcation, ultrasubharmonic solution bifurcation and quasi - periodic solution
本文詳細研究了具有限時滯li nard方程的周期擾動hopf分支，即在該系統經歷hopf分支時，研究小周期擾動對系統的影響，特別是討論了擾動頻率與hopf分支周期解的固有頻率在共振、次調和共振、超調和共振、超次調和共振的情形。 -
By making algebraically equivalent transformation for the standard centering equation xs = e, we obtain a new system of perturbed k - k - t equations and, for specific power transformation, recover the newton equations that are recently used by j. m. peng et al to show a lower polynomial complexity bound for large - update algorithm
前述的兩種方法是針對擾動k一k一t系統進行的，而本文的另一種方法是採用ncp函數，直接將標準線性規劃k一k一t條件化為一個不含內點約束的等價方程組，以此改造標準攝動方程組。 -
Using variational lyapunov method and comparison principle, some results of ultimate stability of perturbed differential systems through the corresponding ultimate stability properties of the unperturbed differential systems and the comparative system are gotten
摘要變分李雅普諾夫函數方法和比較原則相結合，利用無攝動脈沖微分系統和比較系統的最終穩定性性質得到了脈沖攝動微分系統最終穩定的若干結果。 -
In order to simplify the perturbation equation, we assume that the system is homogeneous in equilibrium state and poisson ' s equation describes only the relation between the perturbed density and potential function
為了簡化方程，假定平衡時的系統是均勻的， poisson方程只建立擾動后的密度和勢函數之間的聯系。 -
However, the existing algorithms are almost based on the standard perturbed system, namely the k - k - t system of logarithmic barrier problem for standard linear programming
但現有的演算法幾乎都是基於標準攝動方程組，即標準線性規劃對數障礙問題的卜k - t系統，建立起來的。 -
On the basis of the perturbed karush - kuhn - tucker ( kkt ) conditions of the primal problem, this paper presents a new interior point algorithm to solve power system weighted nonlinear l ( norm ( ipwnl1 ) state and parameter estimation problem
基於原問題的擾動karush - kuhn - tucker （ kkt ）條件，本文提出了一種新的電力系統加權非線性l1范數狀態及參數估計內點演算法。 -
The convergence of the solution of a linear singularly perturbed system in distribution topology as tends to zero is considered
摘要討論了線性奇異攝動系統廣義狀態解當趨于零時在廣義函數空間上的收斂性問題。 -
This paper presents a bidding model of power market and resolves it by a new interior point nonlinear programming algorithm for optimal power flow problems ( opf ) based on the perturbed kkt conditions of the primal problem. at the same time, it discusses the implementation of a bidding system based on web
本文基於原問題擾動karush - kuhn - tucker （ kkt ）條件的現代內點最優化演算法，完成了電力市場競價模型的建立和求解，並初步討論了一種基於web的競價交易系統之實現。 -
The paper consists of two parts. in the first part, the definitions of zq - equivariant vector fields and the method of detection functions are stated. in the second part, a concrete numerical example of z8 - equivariant perturbed planar hamiltonian system of of degree 7 is constructed, and for the unperturbed vector field having maximal number of centers, its global phase portraits are analyzed
本文由兩部分組成，第一部分為綜述，介紹了z _ q -等變向量場以及判定函數法；第二部分首先討論了一類7次z _ 8 -等變的平面hamilton系統，研究了具有最大中心數時的hamilton系統可能存在的部分全局象圖。 -
The sib of differential - algebra equation ( dae ) can be interpreted as one mechanism of transient voltage unstable or voltage collapse, and this mechanism is illustrated under multi - machine system. moreover, the algorithm for search sib point under multi - machine system is proposed. the study of dae model and its singularity - perturbed model shows that they are different in essence
微分-代數方程下的奇異誘導分岔可作為暫態電壓崩潰的一種機理解釋，在典型系統中詳細地分析了該機理，並在多機系統中構造出相應的算例，此外還提出了在多機系統中計算奇異誘導分岔點的演算法設想。
分享友人