feedback stability 中文意思是什麼
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These results indicate that the magnetic field should have upper stability when the particle beam is low polarized while the requirement of the stability of the magnetic field can be lowered when the particle beam is high polarized in the experiment of producing the polarization of the particle beam. and the complementariness can be used as a negative feedback to stabilize the polarization of particle
這一結果表明，在產生離子束極化的實驗中，在離子束低度極化的前期階段，磁場應具有較高的穩定性，而在離子束極化度較高的後期階段，磁場的穩定性要求可以放鬆；自旋的縱向分量的無規漲落和橫向分量的無規漲落的互補性有可能用來做成穩定離子極化的負反饋。 -
It ' s reflected in four aspects : teaching target, teaching resources, teaching tactics and teaching assessment. the determination of teaching contents is the emphasis, and the teaching contents is determined by teaching target ; the collection of material ( teaching resources ) is the difficulty - compose a script after making a careful study of the teaching material, then collect the material according to the script ; teaching tactics are embodied by the determination of information form and by the way in which the contents accord with the form so as to get the best result in teaching ; making teaching assessment guarantees the quality of the software. in the early making period, the original model method of system engineering is adopted to produce small experimental courseware and a further revision and improvement are made in consultation with some experts. also an agreement on the demand of the software system is reached. in the later making period, the software is appraised by experts from its stability, serviceability reasonableness of construction, and the scientific nature of contents, then it is put into use as an experiment. finally those who use it are required to fill the teaching feedback table
教學設計理論是靈魂，它貫穿于整個軟體編制過程，從四個方面來體現：教學目標、教學資源、教學策略、教學評價。教學內容的確定是重點，根據教學目標來確定教學內容；素材的收集（教學資源）是難點，在鉆研教材的基礎上撰寫腳本，根據腳本去收集素材；教學策略體現在信息形式的確定，以及如何使內容與形式協調一致，達到教學最優化的效果；而進行教學評價是本軟體質量的保證，在軟體的製作的初期，採用系統工程論的原型模型法，開發出實驗性小課件，在徵求專家的意見的基礎上進一步修改、完善、確認軟體系統的需求併到達一致的理解，在軟體製作的後期，再請專家從軟體的穩定性、可操作性、結構的合理性、內容的科學性等方面進行鑒定，最後將軟體作實驗性投入使用，再讓實驗對象填寫教學反饋信息表。 -
Study on stability and bifurcation of the current feedback controlled boost converter
變換器的穩定性及分岔研究 -
The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault ， researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system ， a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows ： this paper compared some existing methods in excitation control ， fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 ， indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which ， discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations ， made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations ， which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations ， there were several very important parameters of power system - - rotor angle ( ) ， rotor speed ( ) ， generator q axis voltage ( eq ) ， transient voltage ( e ' q ) ， active power ( pe ) ， mechanical input power ( pm ) ， valve opening ( ) ， generator terminal voltage ( vt ) ， based on the model ， nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault ， which achieved better postfault regulation compared with another two routine methods ， one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either
在介紹逆系統理論的基礎上，詳細介紹了dfl理論，通過比較闡明了dfl理論其本質是逆系統方法的一類，並結合具體課題推導出的模型方程將dfl理論進行了擴展，使之適應于電力系統這個強非線性對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發電機勵磁與汽門綜合起來進行控制的模型方程，此模型方程涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端電壓vt ，在此基礎上建立了實用的電力系統簡化的數學模型，並將擴展的dfl理論應用於此模型系統，結合線性二次型最優控制理論設計出大型汽輪發電機的非線性綜合控制器及機端電壓最優控制器，通過模擬實驗與採用常規的按電壓偏差進行調節的比例式勵磁控制器+汽門比例控制及採用常規的按電壓偏差進行調節的比例式勵磁調節器和基於二次型性能指標設計的最優快控汽門（考慮發電機的飽和因素）進行了對比，證實了採用此種控制器可以有效地提高電力系統的暫態穩定性，並且在電力系統遭受小干擾時同樣具有良好的調節性能。 -
Topics covered include : properties and advantages of feedback systems, time - domain and frequency - domain performance measures, stability and degree of stability, root locus method, nyquist criterion, frequency - domain design, compensation techniques, application to a wide variety of physical systems, internal and external compensation of operational amplifiers, modelling and compensation of power coverter systems and phase lock loops
所涉及的主題包括：反饋系統的特性和優勢，時域和頻域性能度量，穩定和穩定度，根軌跡法，奈魁斯特準則，頻域設計，補償技術，種類繁多的物理系統應用，運算放大器的內部和外部補償，能量轉換系統的建模和補償，以及鎖相環。 -
Control effect with high accuracy and stability on hydraulic shovel is achieved by feedback plus feedforward, nonlinear compensation, state feedback and gain scheduling on conditions
通過採用反饋加前饋控制、非線性補償、狀態反饋和根據狀態對增益編排，獲得了對液壓正鏟挖掘機的高精度控制效果和高穩定性。 -
The rate gyro feedback provides positive dynamic stability and well-damped transient response to commands or disturbances.
速度陀螺反饋提供正向動力學穩定性和對于指令式擾動的很好阻尼的瞬時響應。 -
Abstract : this paper considers the decentralized stabilization problem via local state feedback control laws for a class of large - scale linear discrete - time systems with delay interconnections. a sufficient condition for decentralized stabilizability is derived and is expressed as a system of linear matrix inequalities. furthermore, the problem of designing a decentralized state feedback control law with smaller feedback gain parameters is formulated as a convex optimization problem, and latter can be solved by using existing efficient convex optimization techniques. the obtained controller enables the closed - loop systems to be not only stable, but also of any prescribed stability degree
文摘:用一組線性矩陣不等式給出一類線性離散時滯大系統分散能鎮定的一個充分條件，進而，通過建立和求解一個凸優化問題，提出了具有較小反饋增益參數的分散穩定化狀態反饋控制律的設計方法.所得到的控制器不僅使得閉環系統是穩定的，而且還可以使得閉環系統狀態具有給定的衰減度 -
Chapter 4 discusses how to stabilize a class of time - delays neural networks via standard feedback control ; this kind of neural networks provides a unified view of several well - known neural networks ( such as hopfield neural networks and cellular neural networks ) with discrete delays or distributed delays. a stability criterion is given by using the lyapunov method. all the results obtained in this chapter are stated in simple algebraic forms so that their verifications and applications are straightforward and convenient
通過使用lyapunov方法，我們得到了一類時延神經網路經過標準反饋控制后的穩定條件，這類神經網路涵蓋了幾種著名的神經網路，如hopfield神經網路、細胞神經網路，同樣，本章所得到的結論也是簡單的代數表達式，使用非常方便，最後在用計算機通過做數值實驗對這些結論進行了驗證。 -
These simulations include the stability analysis, and dynamic variety while the influent and the feedback coefficient are variety. 5. an auto - control system project used in wastewater treatment plant based on ethernet and plc is introduced ; and for the pumping station, using dynamic programming ideology, builds a model with the least running - time optimization goal, and introduces the software realization using plc
以作者負責的一個項目為例，詳細的介紹了如何基於工業以太網和plc實現污水處理廠的全廠實時自動監控系統；同時，對污水處理廠的重要環節?污水泵站，應用動態規劃思想，建立以泵組使用時間最短為優化目標的數學模型，並介紹了該模型基於plc的軟體實現。 -
Voltage feedback control can automatically compensate to the distribution voltage wav and let the welding electric arc stability
電壓反饋控制，對電網電壓波動能自動補償，使焊接電弧穩定。 -
Meanwhile, small signal stability of the system with associated feedback control is similar to that with all state variable feedback control
從特徵值比較看，關聯測量分散勵磁控制下的小干擾穩定性可以接近全狀態量反饋控制時的性能。 -
According to a delay - dependent stability condition of control systems, a state feedback controller is designed and the madb is obtained in terms of linear matrix inequalities
該方法利用控制系統的時滯相關穩定性條件設計狀態反饋控制器，得到最大允許延遲時間，並以線性矩陣不等式的形式描述。 -
Firstly, sufficient conditions of lagrange stability for nominal unperturbed pendulum - like systems are derived based on the nonlocal reduction method. then the static state feedback controller design methods are presented for uncetain pendulum - like systems with time - varying norm - bounded parameter uncertainty to obtain robust lagrange stability. it is shown that the above problem can be reduced to the existence of the solutions to a set of lmis
在具體的推導過程中，首先基於非局部降階法，推導了高階標稱類擺系統lagrange穩定的充分性條件，然後基於此條件，針對具有范數有界參數不確定性的受控高階類擺系統，給出了使其魯棒lagrange穩定的狀態反饋控制器設計的充分性條件。 -
This paper introduces a method of variable structure control based on the feedback linearization, which can solve the stability problem of the feedback linearization when there are some plots which relative degrees havent definition in the concerned state region
在非線性系統反饋線性化方法的基礎上，採用了變結構控制，解決了當在所關心的區域內存在相對度無定義的點集時，直接採用反饋線性化方法不能保證系統的穩定這一問題。 -
Abstract : this paper introduces a method of variable structure control based on the feedback linearization, which can solve the stability problem of the feedback linearization when there are some plots which relative degrees haven ' t definition in the concerned state region
文摘:在非線性系統反饋線性化方法的基礎上，採用了變結構控制，解決了當在所關心的區域內存在相對度無定義的點集時，直接採用反饋線性化方法不能保證系統的穩定這一問題。 -
Based on the theory of analogy of structural mechanics and optimal control, the optimal induced norm - 2 of state feedback h control is shown to be the fundamental rayleigh quotient eigenvalue in structural vibration or euler stability problems
根據結構力學與最優控制的模擬理論，指出狀態反饋h控制黎卡提方程中的最優參數2 ，實質上就是結構振動或穩定理論中的瑞利商最小本徵值。 -
Abstract : based on the theory of analogy of structural mechanics and optimal control, the optimal induced norm - 2 of state feedback h control is shown to be the fundamental rayleigh quotient eigenvalue in structural vibration or euler stability problems
文摘:根據結構力學與最優控制的模擬理論，指出狀態反饋h控制黎卡提方程中的最優參數2 ，實質上就是結構振動或穩定理論中的瑞利商最小本徵值。 -
Through small signal stability analysis and transient stability simulation in a typical hvdc system ( epri 36 ), the results show that some characters of closed - loop system on the basis of associated feedback control, such as angle stability, voltage accuracy and small signal stability, are better than those of avr + pss
通過一個典型交直流電力系統（ epri - 36系統）的小干擾穩定計算和暫態模擬表明，關聯測量分散勵磁控制下的閉環系統在功角穩定性、電壓調節精度以及小干擾穩定性方面均優于常規勵磁附加pss 。 -
Firstly, the equilibrium solution is global asymptotic stability and exponential stability on l2 [ 0, l ] under neumann and dirichlet boundary control conditions, control inputs for choosing the boundary control is bounded in lx, the equilibrium solutions decay to zero and integrating the solution square in [ 0, 1 ], it decays to zero exponentially, by using nonlinear boundary control conditions and input feedback control method
首先，採用非線性邊界條件輸入反饋控制方法，研究得到該類方程在neumann和dirichlet邊界控制條件下的平衡解在l _ 2 [ 0 ， 1 ]上是全局漸近穩定和指數穩定的、在所選邊界控制下控制輸入是l _有界的、平衡解隨時間衰減到零以及平衡解的平方在[ 0 ， 1 ]上的積分按指數方式衰減到零。
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