Parameter identification problems belong to the partial differential equations inverse problems. They are also common in the field of natural science and engineering.
参数识别反问题是偏微分方程反问题的一类，也是在自然科学与工程技术的各领域比较常见的问题。
Differential coefficient method together with distribution parameter estimation is put forward, so that the data processing may be implemented on a computer, thus greatly reducing calculation.
提出了在用改进雨流计数法进行载荷数据统计时结合载荷分布参数估计的变差系数法，可简化统计处理过程，提高计算速度。
In physics, the physical parameter evolution along with the time is often controlled by the non-linear partial differential equation.
在物理学中，物理参量随时间的演化往往是由非线性的偏微分方程支配的。
Consider the distributed parameter system described by the second order partial differential equation of composed type, we discuss its a boundary optimal control problem with quadratic performance.
考虑用二阶复合型偏微分方程所描述的分布参数系统，研究了它的一个使平方性能指标达到最小值的边界最优控制问题。
Using the distribution parameter method, established a differential equation, and made its discrete solutions.
方法采用分布参数法建立微分方程，并进行离散求解。
Stated in matrix form, the module shuns the complex direct differential of mechanical output expression, and resolves the relativity of mechanical output parameter error successfully.
整个模型以矩阵形式表达，避开了对机构输出表达式直接微分时复杂的数学运算，成功地解决了机构输出参数误差的相关性问题。
New method of parameter estimation for time varying non linear distributed systems is proposed in term of orthogonality of orthogonal polynomial and differential operation matrix.
利用正交多项式序列的正交性及微分算子矩阵，论述了时变非线性分布参数系统参数估计的正交多项式法。
Research is done on the robust stability of multi -delay differential systems of neutral type subject to norm -bounded parameter uncertainty that played important roles in the control theory.
针对控制系统中应用十分广泛的不确定性问题进行了研究，主要研究了含范数有界参数不确定性中立型多延迟微分系统的鲁棒稳定性。
The transformation ratio of the original current transformer (CT) on the transformer HV side was so large that a parameter for the differential protection software exceeded its settable scope.
因变压器高压侧的电流互感器选择变比过大，以致超出差动保护软件的参数设置的范围。
The PID parameter was adjusted in the order of proportion, integral and differential, and was decided by trying from small to large.
系统PID参数调整按先比例、后积分、再微分的顺序采用凑试法由小到大整定。
The paper also describes the technique of forming parameter matrix and linking matrix automatically and solving the differential equations of all kinds of signals.
使用了自动生成参数矩阵及连接矩阵的技术，并采用梯形法求解微分方程，可对一般性的输入信号进行迅速、准确的仿真输出。
This paper studies the necessary and sufficient condition of uniformly convergent difference scheme for the elliptic-parabolic partial differential equation with a small parameter.
本文研究小参数椭圆-抛物偏微分方程一致收敛差分格式的充要条件。
A new type of three parameter combination logging tool is developed to improve the effect of differential temperature logging technology during medium to late term of oil field development.
为提高微差井温测井技术在油田开发中后期的作用，开发设计了一种新型的三参数组合测井仪。
This paper proves that the quasilinearization method for parameter estimation of ordinary differential equation in chemical reaction kinetics essentially belongs to the region of Gauss-Newton method.
本文通过理论推导，证明在反应动力学常微分方程参数估值中所采用的拟线性化法在本质上仍然属于高斯—牛顿法的范畴。
In the problem of smoothing, filtering and predicting matching data in aerospace measurement, matching data refers that velocity parameter is differential of position parameter.
讨论了匹配测量数据的平滑、滤波和外推问题。所谓匹配测量数据是指位置参数和速度参数呈求导的匹配关系。
Using concepts of invariable set and isolated cube, we obtained existence for bifurcate points of bounded solutions of second order ordinary differential systems including a parameter.
用孤立不变集和孤立块的概念，给出了含一个参数的二阶常微分方程组的非驻定有界解分支点的存在性准则。
In approximate calculation of radiation transport differential equation absorption coefficient is a fundamental parameter.
辐射传输方程微分方法的近似解通常以吸收系数为基本参数。
The pressure drop pulsation is analyzed by using a lumped parameter nonlinear model. The results show that the pressure drop type instability can be described by a second-order differential equation.
使用集总参数非线型模型来分析蒸发管中汽液两相流压力降型脉动，结果表明：压力降型不稳定性可以用二阶常微分方程来描述。
Four of them, i. e. the theorems on the mean-square total differential and mean-square directional derivative are special conclusions of the multiple parameter stochastic processes.
其中关于均方全微分和均方方向导数的定理是多指标随机过程所特有的结论。
Proposed a new form of non-linear first-order ordinary differential equation, meanwhile, it shows the parameter form of universal solution.
提出一阶非线性常微分方程新的可积型，且给出其通解的参数形式。
First, a differential geometrical description equation is obtained based on differential geometry theory without the need to estimate the parameter of available time-to-go.
首先，基于微分几何理论，得到了导弹运动的微分几何描述方程，无需估计剩余飞行时间。
Method differential integrated backscatter (IB) imaging technique were used to monitor the HIFU-induced lesions, which combined IB parameter imaging with the digital differential method.
方法将超声背向散射积分(IB)参量成像与数字减影法相结合，提出IB减影成像方法用于HIFU治疗的损伤区域监控成像。
Tracing algorithm for Thevenin equivalent parameters based on complete differential equation was presented in consideration of parameter variation during calculation.
考虑戴维南等值参数在跟踪计算过程中不断变化的实际情况，提出基于全微分的戴维南等值参数跟踪计算方法。
Applying wavelet transform, differential equation of multi-scale structural dynamic was obtained and the parameter recognition of damage identification was analyzed in structural dynamic system.
应用小波变换，推导了多尺度结构动力方程来分析结构动力系统中的损伤识别。
The governing equations for the problem is modified into a second-order nonlinear differential system with two infinitesimal parameters and a double parameter multiple scale method is presented.
将该问题的基本方程化为具有两个小参数的二阶非线性方程组，并在双参数摄动法和单参数多重尺度法的基础上提出了双参数多重尺度法。
The solution strictly satisfies the differential equation of a plate on the two-parameter elastic model foundation, the boundary conditions of the free edges and the free corner conditions.
它严格满足双参数弹性地基上板的控制微分方程和自由边的边界条件和角点条件。
The influences of the shear descending modulus, the internal length parameter of rock material, the differential stress and shear stress rate on shear localization are investigated.
研究了剪切降模量及岩石材料内部长度等参数对剪切带内部应变（率）的影响。
The influences of the shear descending modulus, the internal length parameter of rock material, the differential stress and shear stress rate on shear localization are investigated.
研究了剪切降模量及岩石材料内部长度等参数对剪切带内部应变（率）的影响。
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