Established a linearized oscillation result of the second order nonlinear neutral delay differential equation with positive and negative coefficients. 建立了二阶具正负系数的非线性中立型微分方程的一个线性化振动性结果。
To see what error was engendered in the process, we now allow Ni to differ from Ne and use the linearized Poisson equation. 为了研究在这个过程中引起了多少误差,我们让ni与ne不相同,并用线性化的泊松方程。
Linearized mass equation for multi-stage vehicle with series or parallel propulsion system 串联与并联推进多级运载火箭线性化质量方程
Linearized Oscillation of First Order Nonlinearity Variable Delay Differential Equation 一阶非线性变时滞微分方程的振动性
The model of brick masonry structure is simulated as shear model that is equivalently linearized. The covariance matrix equation is deduced, and the statistics of stochastic response and sensitive coefficient are given. 砖砌体结构模型采用剪切模型,并进行等效线性化,导出两次过滤白噪声作用下协方差矩阵方程,进而求得结构随机反应的统计量和灵敏度系数。
By solving the linearized atmospheric dynamic equation system including turbulent dissipation, the analytical solutions of wave drag and form drag over small scale terrain in a nocturnal stable boundary layer are obtained. 通过求解含有摩擦耗散的线性化大气动力学方程组,得到了在夜间稳定大气边界层中小尺度地形产生的波动阻力和形式阻力的解析解。
The linearized atmospheric equation system is solved analytically to obtain a theoretical model of the urban heat island circulation. 文中根据线性化的大气方程组求得了城市热岛环流的理论模式。
On the basis of this, the problem of finding out roots of a linearized polynomial is changed into the problem of solving a simple equation in a finite field. Because of this, it is convenient for a computer to find out roots of a linearized polynomial. 在此基础上,将线性化多项式根的求解问题归结为有限域上简单方程的求解,使得可以方便地用计算机求解线性化多项式的根。
Linearized global spectral model of primitive-equation with 34-LEVEL and response of model atmosphere to force of topography 34层线性球面原始方程谱模式与模式大气对地形强迫的响应
A linearized pressure viscosity equation is presented together with Reynolds equation in dynamic condition for infinitely short journal bearings, the analytical solutions of pressure and force components in oil film is obtained by using the method of Fourier sine transforms. 在无限短径向轴承理论中,引入了线性化的压粘方程式,结合在动态情况下的雷诺方程,用富利叶正弦变换方法,得到油膜压强及油膜力的解析解。
Generally in model discrimination of chemical kinetic equations which are nonlinear the method of transformations of variables is often used in order to obtain a linearized equations from the nonlinear equation. 一般在非线性的化学动力学方程模型筛选时,通常是用变量代换法使非线性方程线性化。
The linearized Navier Stokes equation of 2 D viscous incompressible fluid is transformed into resolving the corresponding potential function and stream function in Laplace domain, while the former satisfies the Laplace equation and the latter satisfies the Helmholtz equation. 在拉氏变换域内将线性化的Navierstokes方程转化为求解相应的势函数和流函数,前者满足拉普拉斯方程,后者满足Helmholtz方程。
The stability and controllability of the longitudinal perturbation motion was analyzed based on the linearized equation. 在此基础上,对该飞艇的纵向扰动运动进行了稳定性和能控性分析,指出其是不稳定的,但完全能控。
The vertical propagating process and evolutive characteristics of planetary waves forced by topography are investigated by a global linearized primitive equation model. 本文用线性化全球原始方程谱模式来研究地形强迫行星波的垂直传播过程及演变特征。
When the stability of nonlinear dynamical system is studied based on Lyapunov First Theory, it is necessary to analysis the stability of the linearized ordinary equation with calculating all the eigenvalues and eigenvectors; 在利用Lyapunov第一近似定理对非线性系统稳定性问题进行讨论时,需对一次近似微分方程在平衡点处的稳定性进行研究,计算出所有特征值与特征向量;
The implicit iterative method was applied to the linearized Newton equation, and the key step in the process was that a new reasonable a posteriori stopping rule for the inner iteration was presented. 对线性化后的Newton方程用隐式迭代法求解,关键的一步是引入了一种新的更合理的确定(内)迭代步数的后验准则。
With reference to the parameter estimation problem, a linearized model of the experimental mechanism is established, whose state equation is determined by means of the continuous Hopfield Neural Networks ( HNN). 在参数估计方面,本文构造了弹性连杆机构动力学系统的线性化模型,根据连续型Hopfield神经网络(HNN)的优化计算原理,对该线性化模型的状态方程进行了参数估计。
This paper applies the combination of linearized governing equation and harmonic balancing method ( LHBM) to yield the dispersion relation. The application of the method of averaging is then employed to achieve very accurate transient responses of the weekly dissipative system. 本文应用的方法是将控制方程线性化及结合谐波平衡法(线性谐波平衡法)而产生色散关系,再把平均法应用在弱非线性的耗散系统中得到非常准确的瞬变反应。
Within the limits of linearized theory, the problem was reduced to a Fredholm singular integral equation of the first kind. 在线性理论范围内此问题可化成Fredholm第一类奇异积分方程。
In this paper, the minimum-fuel, multiple-impulse, time-fixed rendezvous problem based on the linearized relative motion equation is investigated. 本文研究了两个空间飞行器在固定时间内燃料最省的多冲量交会问题。
By using the augmented state matrix of the linearized power system model and performing the corresponding sparsity-oriented calculation, the correction equation is solved exactly, and the speed of convergence for the selected Ritz values is asymptotically quadratic. 算法中使用了电力系统线性化模型中的增广状态矩阵进行相应面向稀疏的计算,可准确求解修正方程,以保证算法具有渐进二次收敛速度。
In this paper. the Euler equation and equation of continuity of water movement are linearized on the basis of the small disturbance principle, then the undulatory equation is solved. 本文通过对水流运动的欧拉(Eulcr)方程和连续方程按小扰动原理进行线性化处理,然后求其波动方程的解。
Acording to features of production hyperbolic decline equation, A linearized method of solving nonlinear hyperbolic decline equation is proposed out. 根据产量双曲递减方程的特点,提出了非线性双曲方程的线性化求解方法。
A linearized method of Hammerstein equation Hammerstein方程的一个线性化方法
Shooting method is used to obtain equilibrium solution and eigenvalue of the linearized equation about temperature pertubation around equilibrium. 利用打靶方法,可以求得稳态温度分布和关于温度微扰方程的本征值。
E., the integral representation of the solution of initial value problem for linearized M ─ B ─ O equation is given by means of Fourier transformation. 借助于Fourier变换求出了线性化的MB0方程初值问题的准确解,即积分表达式。
By analyzing the roots distribution of the characteristic equation of the linearized equation, stability results of the three equilibria and the existence of Hopf bifurcation are obtained. Stability switches with respect to parameter delay are detected. 通过对中立型泛函微分方程的线性化特征方程根的分布分析,给出了系统的平衡点稳定性结果以及Hopf分支存在的充分条件,进而发现该系统存在对于时滞的稳定性开关的结论。
The results show that using nonlinear process equation can further improve the performance, but using nonlinear pseudo-range equation has no significant improvement compared to the linearized pseudo-range equation. 结果表明:非线性系统方程可以进一步提高系统对方位角的估计性能:非线性伪距观测方程对组合系统的精度没有明显提高。
According to the linearized relative motion equation of the formation flight ( C-W equation), any time the relative state covariance matrix and state transition matrix can be got, thus, any time the relative vector covariance matrix will be able to calculate. 根据卫星编队飞行的线性化的相对运动方程(C-W方程),能得到任意时刻相对状态协方差矩阵和相对位置误差矢量的协方差矩阵。