In order to eliminate the influence caused by the nonminimum phase characteristic of a common Boost DC／DC converter, Viswanathan K has proposed a novel tristate Boost DC／DC converter. For enhancing performance, the statespace averaging model of this converter was first presented in this paper. Due to the nonlinear nature in this model, an inputoutput feedback linearization technique was adopted, and a complete controllable linear system was obtained. Then a statefeedback control strategy was designed based on this linear system. Simulation results show that the proposed control strategy can assure constant output voltage in a wide range, so as to realize the stability of the system during large fluctuation of power supply and load disturbance. Good dynamic performance can also be achieved.

針對 Viswanathan K為消除普通BOOST DC／DC變換器的非最小相位特性而提出的三態(tài)Boost DC／DC變換器，為進一步提高這種電路拓撲的性能日韩A级毛片久久，在建立了變換器狀態(tài)空間平均模型的基礎上色淫综合区，針對其多變量人人操午夜免费官网、非線性特點456在线视频，采用輸入輸出線性化將其轉化為一個完全可控的線性系統(tǒng)二久久黄片，在此基礎上應用現(xiàn)有成熟的線性控制策略進行了控制系統(tǒng)的設計，并且采用MATLAB進行仿真驗證黄片观看六十秒，結果表明：這種非線性控制策略可以確保輸出電壓在大范圍內(nèi)恒定可調(diào)色综合五月天，且即使存在大范圍擾動(輸入電壓和負載變化均較大)的情況下www,AV天天27，系統(tǒng)也可以確保穩(wěn)定性和良好的動態(tài)性能欧美性爱激情免费看。

The linear manifold-learning algorithms represented by PCA, with their substantial mathematical foundation and simple implementation, but they are not able to show complex nonlinear manifold structure with their linear essence, which gives rise to nonlinear manifold-learning algorithms such as Isomap, SIE etc.

以PCA為代表的線性流形學習算法有較強的數(shù)學基礎，實現(xiàn)簡單，但是其線性本質并不能揭示復雜的非線性流形結構日韩精品国语在线观看；于是又出現(xiàn)了以Isomap麻豆视频免费现看、SIE等為代表的非線性流形學習算法。

Thereby, these facts indicate that the SDE not only have better statistic properties but also have uniformly smaller mean square errors than ANOVAE in an available group of linear mixed models. The other significative following work is to generalize the idea of SDE to multivariate linear mixed model and obtain the SDE of variance component matrices which uniformly dominate the ANOVAE either.

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Graph theory is one of the unified modelling methods. Based on the traditional linear graph theory, the paper proposed the Extensible Elementary Linear Graph method, which could realize composable simulation for multidiscipline system, and perform inter-energy domain expression in a unified way.

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Linear solvation energy relation was firstly introduced in the paper, and the method and step of gaining the special parameters of solvent and solute were introduced in detail, and these special parameters were used to selection and optimization of extractive agent in extractive distillation. The model of predicting activity coefficient at infinite dilution was established by linear solvation energy relation. By the above theory, several candidate solvents were selected to separate C5 fraction, and by experiment of vapor-liquid phase equilibrium at atmosphere pressure, the mixture of N-methyl-pyrrolidone including 4% water was used extractive agent of separating C5 fraction. Then binary vapor-liquid phase equilibrium of the some compound in C5 fraction and N-methyl-pyrolidone were determined at atmosphere pressure and correlated by NRTL equation. Isoprene being objective compound, experiments were operated in the laboratory-scale column; the processes were simulated by RadFrac model in ASPEN PLUS. And by the combination of experiment and simulation, the new process of separation of C5 was established.

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The experimental results show that for most continuous optimization problems, the strategy of concave function gains an advantage over the linear strategy, while the linear strategy outperforms strategy of convex function with the identical initial and final weights.

試驗結果表明，對于多數(shù)連續(xù)優(yōu)化問題自拍偷拍36，在初始權值和最終權值相同的情況下一级毛片试看三分钟，凹函數(shù)遞減策略優(yōu)于線性策略，而線性策略優(yōu)于凸函數(shù)策略a免费网站，凹函數(shù)遞減策略能夠在不影響收斂精度的情況下較大幅度地提高粒子群算法的收斂速度最新国产一区。

Under quadratic loss function, the definition of conditional admissible prediction is given and some necessary and sufficient conditions for linear predictions Ly_s of conditional linear predictable variable Qy to be admissible are obtained.

在二次損失函數(shù)下，給出了條件可容許預測的定義国内小视频，在齊次線性預測類和非齊次線性預測類中得到了條件線性可預測變量Qy的線性預測Ly_s是可容許預測的充要條件国产性交一级黄色视频。

Order Hilbert ill-conditioned linear equations were solved, and the relative error was less than 0.45%. Numerical experiments verified that the method was efficient compared with the efficient methods used commonly nowadays. Numerical experiments results showed that the conjugate vector base method was suited for solving large-scale ill-conditioned linear equations with fast convergence and high precision.

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The systems classified as linear or non-linear, loosely connected or closely connected, simple or complex to determine the main or individual.

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This method is based on the theory of stability of linear time-varying systems. It realizes the synchronization by transferring high time-varying systems into low linear constant coefficient system.

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