介绍一种快速识别离散系统阶数的方法。
A method for rapidly identifying the orders of discrete system is given.
模型阶数该是多少？
随着阶数的升高，形状参数的取值范围将扩大。
With the elevation of order, feasible range of the shape parameter value is extended.
以实验的方法研究了步长因子的特征及模型阶数的选取。
With the experiment the characteristic of the step factor and the order of ar model are researched.
由于主特征矢量排出的矩阵阶数较低，也不会出现伪峰。
The matrix arranged by main eigen-vector possesses lower dimensions, so no pseudo peak will appear.
与传统的LPC谱包络提取法相比，它能降低所用的阶数。
Compared with traditional LPC method, it can lower the order.
采用该乘加单元我们可以实现任何阶数高速FIR滤波器。
With this multiplier adder unit, we can implement FIR filters with any orders.
用此法设计的观测器具有最低动态阶数，且极点可以任意配置。
The observers thus designed have minimal order and their poles may be assigned arbitrarily.
在随机子空间识别方法中，确定系统的阶数是该方法的关键工作。
The key issue in stochastic subspace identification is to obtain the order of the system.
在这个公式中，M是调节器阶数，K是转换过程中的过采样速率。
In this formula, m is the order of the modulator, and K is the oversampling ratio during the conversion.
高阶广义屏传播算子的阶数越高，计算精度越高，但计算量也越多。
The higher the order number of generalized screen propagator, the higher the calculation precision, and the more the calculation amount.
传统的多路寻址液晶驱动矩阵电路设计规模与矩阵阶数平方成正比。
The design scale of traditional driving matrix of MLA-LCD is in proportion to square of matrix dimension.
还研究了超高斯光束通过近轴光学系统时，保持其形状和阶数不变的条件。
The condition has been discussed, under which SG beams preserve their shape and order, while passing through paraxial optical systems.
大致说来，我选择一段模态进行拟合，指定模型阶数，以及确定包含残余项。
Basically, I select a band of modes to fit, specify the order of the model and decide on inclusion of residual terms.
该算子具有方程阶数低且能对陡倾角成像的特点，能适应速度场的任意变化。
The operator is characterized by low order equation, imaging for steep dip and adapting for any changes in velocity field.
但是，当模型的阶数很高时，无法计算并比较每一个备选模型的准则函数值。
However, when the order of ARMA model is very high, to compare every candidate model's criterion value is computationally infeasible.
多脉冲激励线性预测编码（MPLPC）方法中，合成滤波器的阶数是固定的。
The order of synthesis filter is fixed in multi-pulse excited linear prediction coding(MPLPC) method.
由于在中、低频时，声辐射模态对应的辐射效率随着模态阶数的增加而迅速降低。
The radiation efficiency of the radiation modes falls off very rapidly with the increase of modes order at low frequency.
经过详细分析，证明了在此种三角网格剖分下h 1范数的收敛阶数仍是最优的。
After some detailed analysis, the optimal order convergence in H1-norm is obtained under this type of triangulation.
结果表明，所使用的地磁观测资料是准确可靠的，模型截断阶数的选取是合理的。
The results show that the geomagnetic data used are precise and reliable, and the selection of the truncation order is reasonable.
实测数据处理结果表明，该方法能有效地解决拟合效果和多项式阶数之间的矛盾。
Results based on practical measurements show that the proposed technique can effectively resolve the conflict between fitting effects and the polynomial order.
在变换后的球面域上用球谐函数来拟合速度函数，达到降低球谐系数阶数的目的。
Representing velocities by spherical harmonic expansion on the sphere after transformation can greatly reduce the number of spherical harmonic coefficients needed.
结果表明，当压电梁振动阶数较高时，陶瓷片的横向布置对梁的振动特性影响很小。
The results show that the effects of orientation of piezoelectric ceramic on high order vibration characteristics of beam are low.
无模型控制方法非常适用于实际的阶数难以知道或难以辨识，且是时变的非线性系统。
The model-free control is especially useful for real nonlinear systems whose orders and modeling are very difficult to be known and time varying.
算例表明：本文提出的新的状态空间气动弹性模型是一种精度较高而阶数较低的模型。
The results show that the new state-space aeroelastic model is one which has higher accuracy and lower order.
损伤会引起结构参数的变化，由此将可能导致损伤前后模态不再按相同阶数一一对应。
The changes of structural parameters with damage are likely to cause the structural modes after damage not in the same order as those corresponding ones before damage.
计算量采用修正标量位，这样在同样的节点数下相对于矢量位它可以减少联立方程的阶数。
The modified scalar potential is used to reduce the order of the coupled equations in the comparison with the vector potential under the same node number.
对拟合方程进行方差分析并在此基础上利用偏拟合平方和的检验确定拟合多项式的最佳阶数。
The optional polynomial order is selected through the test of the partial fitting square sum on the basis of the variance analysis of the fitting equation.
本文提出一种改进边界元法，它使形成的边界元方程不隐含本征量，避免大阶数矩阵的转置。
A modified boundary element method is proposed. In the approach, the matrices in the formed boundary equation implicitly contain no eigen parameter.
通过对最小二乘拟合公式实际计算结果的分析，得出了“拟合公式阶数取3为最佳”的结论。
By analysing the compute result of the quadratic approximation formula, we educe the conclusion that 3 is the best rank code for the quadratic approximation formula.
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