参数方程

It is unnecessary to find the solutions of Diophantine Equation and identify the extra auxiliary parameters.

一种方式是间接方法，先估计过程模型参数，再通过求解Diophantine方程得到控制参数［1］。

This paper develops a new design method of self-tuning pole placement controller. In this method, parameters of the controller can be directly obtained by a two level linear identifier. It is unnecessary to find the solutions of Diophantine Equation and identify the extra auxiliary parameters. At the same time, the effect of deterministic disturbances can be eliminated.

提出了一种极点配置自校正控制器的设计方法，这种方法用两级线性辨识器可直接获得控制器参数，无需求解Diophantine方程，也不需要辨识多余的辅助参数，而且可以消除确定扰动的影响。

The controller's parameters were identified directly without solving the Diophantine equation or the inverse of matrices, and the online computing time was shortened, which makes the approach be very suitable for the fast rolling process.

采用对模型要求宽松的广义预测控制方法，基于广义误差估计值对控制器参数进行自适应调整，直接辨识控制律参数，省略Diophantine方程的求解、矩阵的求逆，缩短在线计算的时间，适用于快速的轧钢过程。

Both optimal control theory of modern cybernetics and the basic theory of distributed parameter systems are studied.

较系统地研究了现代控制论的最优控制理论和分布参数系统的基本理论，探明反问题与最优控制问题的结合点，并以偏微分方程控制的工程流体力学反问题为主要研究对象，将其提为分布参数系统的最优控制问题。

Gradient regularization method ; Frechet derivative ; regularization parameters ; parameter identification ; ill posedness ; elliptic operator equation

梯度正则化方法； Frechet导数；正则参数；参数识别；不适定；椭圆算子方程

Based on the extended solution to the generalized Sylvester matrix equation, a parametric approach for eigenstructure assignment via state feedback is proposed.

基于推广的广义Sylvester矩阵方程的显式参数解，提出了状态反馈特征结构配置的一种参数化方法。

In this model, the Hamiltonian operator includes not only the anharmonic parameter, but also the dispersive parameters describing dipole-dipole interactions, reflecting the character of molecular stretching vibrations.

计算中引入的模型Hamilton算符所包含的描述U-F键非谐振动的参数λ和描述U-F键之间的偶极-偶极相互作用参数ε1，ε2由实验值得出，波函数|ψn〉按形式为|n，α〉=|n1〉|n2〉|n3〉|n4〉|n5〉|n6〉的基函数集展开，从而把复杂的Hamilton方程转化为简单的矩阵代数方程。

Using the characteristic line theory of hyperbolic partial differential equations,relations between the reflected signals and the dielectric parameters of the stratified media are analyzed.

提要 本文根据双曲型偏微分方程的特征线理论分析了分层媒质参数与时域反射信号的因果关系，研究了基于时域反射数据的分层媒质的参数反演的离散化模型。

After simplification of the Jou model,a diffusion dynamic equation, which was characterized with hyperbolic type, was obtained, then simulative analysis for three combined dimensionless parameters was done to research various diffusion behavior resulted from the change of model parameters.

经过对Jou模型的简化处理，得到了双曲型的扩散动力学方程，通过对模型中3个组合参数的仿真分析，研究了参数的变化可能导致的不同的扩散行为。

This paper uses ridge estimation method to solve the potential ill-conditioned problem in semiparametric regression model.

针对半参数回归模型求解过程可能出现的法方程病态问题，提出了用岭估计原则改进半参数模型的求解。

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。