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equation of state相关的网络例句

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The main idea behind these methods is to take advantage of the known state variables and the theorem of addition for linear system without building up a new Jacobian matrix again. But the equivalent computation of algebraic equation must be performed to get state variables corrections. Accordingly, the speed required to model the contingencies is not fast enough to meet the demand of fast contingency analysis under emergency condition, which is proved by several well-known blackouts caused by flow transferring.

但是,这些算法中的大多数是在实时潮流计算的基础上,利用其中间结果和线性系统的叠加原理,直接求解出事故后的状态变量,都需要通过网络方程求解整个网络状态变量的增量,计算量较大,难于满足紧急状态下快速安全性评估的实时性要求,国内外一系列因静态潮流问题引起的大停电事故就是例证。

Driver system for the stability of nonlinear and non-use of the theory of linear quadratic control law studies, select the ball location, speed and rod angle, angular velocity of the four variables as state variables, output variables for the ball position and bar angle, the establishment of linear state space equation and after the designs of clubs based on LQR control law, the design process simple and easy to realize the control law, simulation results show that the linear quadratic regulator robustness and stability.

球杆系统翻译,求高人针对球杆系统的非线性和不稳定性运用最优二次型理论进行控制律的研究,选取小球位置、速度和横杆角度、角速度四个变量为状态变量,输出变量为小球的位置和横杆的角度,建立状态空间方程并进行线性化后设计了基于LQR的球杆系统控制律,设计过程简单,控制律的实现容易,仿真结果表明了最优二次型调节器的鲁棒性和稳定性。

By using of both the approach of grand canonical ensemble and the approach of mean field equation to describe the evolution of particles on a node, we find that the stationary state of particle is determined by the strength distribution, in contrary to the case of asymmetric weights on the edge where the stationary state is determined by the degree distribution.

通过观察结点上的平均占有粒子数随时间的演化,数值模拟表明了系统在动力学的初始阶段出现了级次动力学过程,这个过程也同样是由强度的分布决定。

On the basis of the expression of characteristic value of the differential equation,the relationship between the stable domain,steady state,steady-state error and AGC model parameters is discussed.

根据该差分方程的特征值。达式讨论了AGC模型设定序列的稳定区域和稳态误差与AGC模型参数之间的关系。

In this paper,from the global viewpoint we first define the nonlinear control system on a two dimensional surface in the three dimensional Euclidean space, give the represwentation of the state equation under a loca coordinate sysgtem of the surface, and study the connectin between the equilibrium state of the nonlinear system and the egodesics on the surface.

我们首先从整体化的观点定义了一种建立在三维欧氏空间的二维曲面上的非线性控制系统,并给出了在曲面的局部坐标系下非线性系统状态方程的表达式,研究了非线性系统的平衡态与曲面的测地线之间的关系。

The stability theorem of estimated state error equation in form of M-matrix is obtained to guarantee the convergence of estimated state.

同样得到了采用M-矩阵判断状态估计误差方程的稳定性定理,给出确保估计状态收敛的一个充分条件。

In this article two functional modes of the Fly-back Converter (Continuous Conduct Mode and Discontinuous Conduct Mode) are particularly analyzed, which include their characteristics, applications, the critical pattern of two functional modes is argued, both the exact boundary from the angle of circuit parameters is crystallized, at the same time, basic principle of PFC under the DCM mode is introduced, which settle theoretical basis for the subsequent design; by establishing the mathematic model of the converter, a further investigation of the configuration is made, qualitatively and quantitatively, analyzed to settle exactly theoretical basis for the subsequent emulation and the experimental parameter; from the angle of steady-state analysis, the transfer function of the system is deduced to establish dynamic small-signal state equation, emulating the system with the help of matlab, then according to the simulation result and the theory of PFC revise the system, lastly, we adopt the project which add a zero-pole compensator to the voltage loop, by this way, a satisfied system performance is gained and the PFC scheme is ensured successfully; finally, based on the previously-done work, we combining with the situation of specific design requirement, acquired the numerical value of each unit devices in this converter

详细分析了反激式变换器的两种工作状态,连续模式(Continuous Conduct Mode ,简称CCM)和断续模式(Discontinuous Conduct Mode,简称DCM)以及各自的特点、应用场合,论证了两种工作状态的临界模式,从电路参数的角度明确了二者的界限,同时还介绍了DCM模式下PFC的基本原理,为后面的设计奠定理论基础;通过对整个变换器系统建立准确的数学模型,对此变换器的电路结构做了进一步的研究,定性、定量地分析了变换器各部分的工作状态,为仿真和实验参数的确定以及电路参数的优化提供理论依据;从稳态分析的角度,为系统建立了动态小信号状态方程并推导出系统的传递函数,利用matlab对系统进行仿真,进而根据仿真结果以及PFC的相关理论对系统进行校正,采用在电压环加入零点—极点补偿器的设计方案,得到了满意的系统特性并且保证了PFC的顺利实现;最后,在前面所做工作的基础上,结合设计要求计算出此变换器系统中每个元器件的数值,利用Pspice对其进行了仿真、优化,然后根据仿真结果搭建了硬件电路。

A further analysis shows that the change of the state of the reservoir rock and fluid due to elasticity follow the state equation, not the Hooke's law.

进一步分析表明,抽油过程中油层岩石和液体由于弹性而引起的状态变化服从状态方程,虽与虎克定律有形式上的相似性,但并不是虎克定律。

Adopting generalized Jordan block and algebra equivalence transform method, all of the transfer functions at different load points can be transformed to state-space description with time variable. The steady robustness of three different mode of control systems were researched by mathematic analysis. It shows that: for the high order inertia controlled object with the characteristic of nonlinear and time-variable that described by the set of transfer functions, the Luenberger function observer established according to its any algebra equivalence state-space description, if some conditions can be met, there would be a matrix of T with n′n satisfied the Sylvester matrix equation TA- FT=GC.

采用广义约当块及代数等价变换方法,可将分段的传递函数描述转换为变参数的状态空间描述,对3种典型控制系统的稳定鲁棒性所进行的理论研究表明,对同一组传递函数描述的具有非线性和时变特性的高阶惯性受控对象,依据其任一代数等价的状态空间描述所构建的Luenberger函数观测器,在满足一定的条件时,存在n′n解阵T满足Sylvester矩阵方程TA- FT=GC。

The second part is the controllability of parabolic equation .We study on the controllability of parabolic systems with a nonlinear term involving the state and the gradient ,the null-controllability property of a 1-d parabolic equation involving a fractional power of the Laplace operator ,null controllability of some systems of two parabolic equations with one control force ,and exact controllability of the parabolic system with bilinear control .

第二部分写的是,抛物方程的能控性,我们研究了含有状态和梯度的非线性的项抛物系统的能控性,含有拉普拉斯算子的分数阶的1-d抛物方程的零能控性,带有一个强控制的两个抛物方程的一些系统的零能控性和具有双线性控制抛物系统的精确能控性。

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