参数方程

In this paper, a new approach, which is based on simulated annealing algorithm for solving a class of diffusion equation of parameter operator identification of inverse problem, is presented.

文章给出了利用模拟退火算法求解一类扩散方程的参数算子识别反问题的一种新方法。

Dimensional analysis is used on basic equations in order to estimate the quantities of different wave effects.

研究的内容主要包括：通过多重尺度展开方法，将波浪的影响参数化，推导出考虑波浪影响的潮流控制方程。

Huge computation, including the on-line estimation of the process parameters, the computation of the Diophantine equation and, especially, the computation of the in...

在线计算量大，包括模型参数的在线辨识，Diophantine方程和逆矩阵的求解，以及其它计算，如处理约束问题需要的计算。

A nonlinear predictive functional control algorithm using Hammerstein models has been developed. The characteristic of this strategy does not need nonlinear optimization that is replaced with linear optimization. Prediction of process output is calculated directly by parameters of model and does not require solving the Diophantine equation.

本文提出了基于Hammerstein模型的非线性预测函数控制，该算法的特点只需进行线性寻优而不需要进行非线性优化，同时过程的预测输出只需应用模型参数直接计算得到而不需要求解Diophantine方程。

It identifies small parameters, moreover avoids online solving the Diophantine equation and inverse matrix. So the computation load of algorithm can be reduced greatly, and real-time property is advanced.

4提出一种基于灰色模型的多变量广义预测控制算法，该算法所需估计的参数少，而且多步情况下无需求解Diophantine方程，从而使计算量明显减少，极大的提高了实时性。

Applying the reaction route that methanol direct reforming and methanol decomposition carry out parallel, the kinetic model with power function type was established for Samp-10 catalyst in SRM, and the parameters of the model were also computed by the least twain multiply method.

以Samp-10催化剂为例，采用甲醇直接重整和甲醇分解平行进行的反应途径，建立了适合其在SRM制氢反应中使用的幂函数型动力学模型，并利用最小二乘法确定了模型参数，得到了其速率方程表达式。

The solution of some practical problems in engineering can be regarded as that of periodic solution of nonlinear autonomous systems according to the opinion of mathematics, The problems of this kind are analysed by means of the direct numerical method in this paper,The simple and convenient Draw Newton Method is applied for solving the parameter vectors in iteration course along with the calculation of a practical engineering problem.

日I崖旨J，'口工程中的一些实际问题往往可以归结为非线性自治系统，例如描述同步发电机暂态稳定性问题的转子摇摆方程，即是一典型的非线性自治系统。虽然可以用各种小参数摄动法求解非线性系统，但是这类方法是依据对线性系统的解进行"摄动"来逼近非线性系统解的。因而当系统

Several common description methods for rotational kinematics are discussed in control point, such as direction cosine matrix, Euler angles, quaternions and Rodrigues/Modified-Rodrigues parameters. Transformation relationships, advantages and disadvantages among those methods are discussed.

从控制角度综评方向余弦、欧拉角、四元数和Rodrigues/修正Rodrigues参数几种常用姿态描述动态方程，指出各种方法的优缺点，及相互转化。

Investigate the numerical solution of the Dirichlet Problem of functions of the eigenvalues of the Hessian with the theory of viscosity solution and the solution is continuous.

第五章研究了将网络参数的混合算法和网络规模的调整算法两个算法有机结合，构建求解微分方程定解问题的理想RBF网络。

Base on the lumped parameter model of the torsional vibration system of crankshafts with variable inertia and considering the nonlinear elasticity force and nonlinear dissipative force, a six-degree-of-freedom nonlinear dynamical equations with parametric excitation and compulsive force are deduced.

从旋转惯量变化的曲轴扭振系统的集总参数模型出发，同时考虑了系统的非线性弹性力和非线性耗散力，导出了参强联合作用下的六自由度非线性扭转振动微分方程。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。