It ' s a iterative and heuristic technique . every time it change the rotational degree of one joint in the motion chain orderly and makes it to approach the end effector . it ' s factly a numerical solution 它是一种反复迭代的启发式方法，它沿着运动链依次改变一个关节的旋转角度，使得endeffector逐步逼近目标，实际上就是一种数值法。
Wavelet analysis based on wavelet transform is the most perfect combination of functional analysis , fourier transform , spline analysis , harmonic analysis and numerical analysis at present , it is a new developing branch in mathematic . although some scholars solved differential equations of structure engineering using wavelet , there have some defects . such as the scaling function and wavelet function have not definit expression , some troubles existed in calculating connection coefficients , its values is instability in some times and so on 虽有学者将小波应用于结构工程中的微分方程求解当中，但是由于daubechies小波的尺度函数和小波函数均没有明确的表达式，在计算关联系数时则存在一定的困难，利用数值法计算关联系数有不稳定等一些缺点，还限制着其应用的广度。
To reply the inquiry of several scholars on " the simulation of tunnel external water pressure by analytical - mathematical method " , the coefficient method , localization of pure numerical method , analytical - mathematical method relating to the calculation of tunnel external water pressure , together with the detail of the example in that paper , are discussed in the paper 摘要针对有关学者对《深埋隧道外水压力计算的解析数值法》一文的讨论，探讨了隧道外水压力计算中作用系数法、单纯数值方法的局限性、解析数值法以及与计算实例等相关的几个问题。
A conclusion can be safely obtained : under the condition of considering geometric size c , which is a measurement from the center of a hole to the nearest side in the 6 - point - supported - glass , the analytic approach and the numerical analysis approach ( i . e . fea ) have a smooth unanimity , thus supplying a theoretical basis on which practical formula can be deduced through fea 得出结论： 6点支承玻璃在考虑孔边距c影响的条件下，采用解析法与采用数值法进行计算，有较好的一致性。从而为采用有限元分析推导实用的计算公式提供了理论依据。
The results are as follows : ( 1 ) if we increase the pumping water by 493 x 104m3 , the amount of leakage recharge of rubber dam will rise by 231x 104m3 ; which indicates pumping by rubber dam can excite much more surface water infiltrate so as to supply groundwater . thus the utilization ratio of water source is increased , and it provides the reliable guaranty for enough supply of the groundwater storage in wet year . ( 2 ) under the condition of present status , the groundwater exploitable resource in wet year is 3670 104m3 最后，通过数值法反复调算计算出本区地下水的允许开采量，计算结果表明，在现状开采的条件下，大沽河地下水库丰水年( p = 20 )时地下水允许开采量为13670 10 ~ 4m ~ 3 ，平水年( p = 50 )时地下水允许开采量为12054 10 ~ 4m ~ 3 ，枯水年( p =加% )时地下水允许开采量为10951xl了砰。
Abstract : according to the continuative condition of the tangential fields on the slot aperture which is the inclined narrow - slot on the broadwall of a sectoral waveguide , the moment method is used to calculate the magnetic current coefficient and distribution . then the scattering field , the scattering parameter and the equivalent impedance are obtained . leting only the te11 dominant mode propagates in the waveguide , the scattering parameters and the normalized equivalent series impedance in the x - band are computed . the basis disigned the slot antenna and the slot array is offered 文摘:根据缝隙口面切向场的连续条件，采用解析数值法矩量法，对扇面波导宽壁上窄的斜缝进行了计算，解得了磁流系数及其分布，并得到散射场、等效散射参量及等效阻抗等重要参数.假定波导中仅有te11主模传输，在x波段计算了散射参量和归一化等效串联阻抗，给出计算结果，为缝隙天线和缝隙阵列设计提供了依据
It is constructed that radial impact and rubbing dynamics differential equations of the rotor system having the nonlinear rigidity on the unsteady and non - linear oil film . the bifurcation and chaos behavior of impact and rubbing fault rotor system caused by the parameters of nonlinear rigidity , rotor rotating speed , eccentric mass is analyzed , in the numerical value analysis method . the bifurcation diagrams , maximum lyapunov exponent diagrams , poincar maps , phase plane portraits , trajectories of journal center , time - history curve , amplitude spectra diagrams of the rotor motion are used ( 2 )建立了具有非线性刚度的转子系统在非稳态非线性油膜力作用下的径向碰摩动力学微分方程,并应用含高阶余项的非线性动力方程的线性化数值法研究了此类系统响应的复杂动力学行为,利用转子响应的分岔图、最大lyapunov指数曲线、 poincar截面映射、时域波形、相轨线、轴心轨迹、幅值谱等图形分析了系统响应的周期运动、拟周期运动、倍周期分岔、混沌等运动形式的转化与演变过程,重点研究了非线性刚度、转子转速、偏心质量等系统参数对碰摩故障转子系统的分岔和混沌行为的影响。
After generalizing the characteristic of modern equipment , the mission of equipment management and general situation of chinese equipment management , basied on two forms of equipment management - - - - - - practicality & value , the author combined quantitative & qualitative methods with example to analyze and discuss questions , especially the reasonable update & depreciation , accordingly achieving the optimization of the technical efficiency & economic benefit 0 one of emphases of the thesis is methods application of equipment reasonable update , that is starting with economic benefit to looking for reasonable using fixed number of year . the thesis used inferior - converted numeric method and rate equation which based on the theory square and combined with harbor loading machines & tugboat ' s actual facts , calculated the economic life of the same machine in order to make sure harbor machines " reasonable using fixed number of year . at the same time , the author made use of midpoint value regress method and stochastic trapeziform forecast method to calculate and analyze and gain the reasonable conclusion o the other emphases is questions of harbor equipment 本文概括介绍了现代设备的特点、设备管理的任务以及我国设备管理发展的概况后，作者从设备经济管理的两种形态? ?实物形态和价值形态出发，采取定量与定性相结合，以定量为主，结合实例进行分析与论述，对港口设备的合理更新与折旧问题进行了着重研究，从而实现设备的技术效能和经济效益的最优化。本文研究的重点之一是设备合理更新的方法应用，即从经济效益出发，来寻求设备的合理使用年限。本文结合港口装卸机械和港作拖轮的实际，运用以正方形理论为基础的低劣化数值法和费用方程两种方法，计算了同一种机械设备的经济寿命，从而确定港机合理的使用年限，同时，运用了中点值回归法和随机梯形预测法进行计算和分析，得到了合理的结论。
