数值技术

To validate the theoretical predictions, an insole embedded with heating wire was made. Infrared thermometer and thermocouple data acquisition system were adopted to evaluate the working performance of the heating insole. The powering capability of lithium cell as used in the insole was also tested through subsequent measurement.

同时设计加热实验对数值模拟结果进行验证，引入红外成像技术及热电偶测温方法对实验过程及结果加以观测和记录，并对实验中所采用的锂电池供电性能进行测试。

On the basis of kinematics analysis and model transformation, an error equation of the robot kinematics parameter is established with numerical optimization, and the optimal design for kinematics parameter is realized, which effectively increases the repositioning precision of the robot.

在运动学分析和模型变换的基础上，运用数值优化技术建立了机器人运动学参数的误差方程，实现了运动学参数的优化设计，有效提高了机器人的重复定位精度。

By the help of numerical analysis and graphic recognition, Duffing-van der Pol non-linear vibration system with 9 parameters has been researched, the Graphic User Interface contains initial conditions, 9 parameters, power spectrums, trochoid chart of phase portraits, Poincaré mapping, analogous dynamic graph of displacements and the analogous vibration graph of mass blocks, the various dynamic characteristics of the non-linear vibration can be attained, which makes it possible to fully implement the visualized computer experiments and study of Duffing-van der Pol non-linear vibration system.

因为混沌运动十分复杂，在研究和模拟混沌运动的过程中，不但要进行大量的数值计算，而且要将计算结果直观地展示出来以便观察混沌现象，完成这一任务非计算机不可。自从洛伦茨利用计算机发现了第一个混沌吸引子以后，30多年来正是有赖于计算机技术的发展，促使混沌的研究取得迅速的发展。另一方面，混沌运动是确定性系统中出现的一种貌似随机的现象，走向混沌有其独特的过程，只有展示出它的演化过程，才能很好地了解混沌运动。也就是说，混沌是一门关于过程、演化的科学而不是一门关于状态、存在的科学。因此，只有利用计算机才能将混沌的动态过程和演化的方式真正地体现出来。

The dimensional accuracy of solidification processes was numerically simulated using the nonlinear FEM with the RP prototype dimensions optimized by dynamic information feedback.The process and mechanism of the unbaked ceramic casting mod process were introduced in detail.

该系统采用非线性有限元对凝固过程中铸件的尺寸精度进行数值模拟，通过动态信息反馈优化原型尺寸，详细介绍了无焙烧陶瓷型精密铸造技术的工艺及机理。

The flexible manufacturing systems considered in the paper consist of possible unreliable workstations, whose inputs may be random. We derive the optimal input and service feedback control policy by using the uniformization technique and stochastic dynamic programming. It is shown that the optimal policy is of bang-bang type. Numeric example is given to illustrate the results.

对于具有随机输入和随机需求的一类不可靠柔性制造系统，利用转移率一致化技术和随机动态规划方法，给出了输入率和服务率分配的最优反馈控制策略，指出系统的最优控制具有bang-bang形式的开关结构，数值例子验证了文中的结果。

An acceleration technique of evolutionary strategy is presented for finding an optimal solution of unimodal functions.

引 言计算机技术的飞速发展，为解决复杂的数值计算问题提供了可能。

In this paper, the space-time finite element theory and its application technologies are studied and discussed. Furthermore the space-time finite element method is used to analyze the transient characteristics of electromagnetism equipments. The work is important to develop the numerical method for the transient electromagnetic field. The detailed work is as follow.In the basis theory of finite element method used in the transient engineering problem, the functional theory and the finite element theory are applied to studied the existence condition of a generalized variation principle, which is the basis of the space-time finite element method.

本文在完善时空有限元法的基础理论和应用技术并将该方法应用于解决电磁装置的瞬态过程分析等相关方面进行了深入的研究与探讨，该工作对于发展瞬变电磁场问题的数值计算方法具有重要的意义，为此进行了如下几方面的工作：在工程瞬变问题的有限元方法的基础理论方面，本文应用泛函理论和有限元理论，系统讨论了一般工程瞬变问题的变分定理的存在条件及对应的变分定理。

In the meanwhile, using the radar sea-ice tracking system to foUow up forecasting data, and the vector diagram of drifting ice filed and nomination at spot manner.

同时首次现场实时计算出雷达冰漂流场矢量图，并开展了雷达海冰数值跟踪预报，在冰区油轮外输作业中得到很好应用，为雷达技术对水体和海冰监测和预报、遥感应用新领域提供科学依据。

According to the result of the simulation, the relationships of pressure, velocity and time and their optimal combination were researched by the experiments using a FC-80 plastic-Injection-Moulding machine made by a company named FONG CHIN.

结果表明，温度、压力、填充速度、时间之间存在着显著的交互作用并超过了单个工艺参数的影响，实验条件下的最优工艺参数组合和数值模拟的结果较为一致，将CAE技术与实验相结合，可在较少的分析次数下获得优化工艺，从而改善了制品质量。

In recent years, CFD technology has been widely applied to numerical simulation of the three-dimensional viscous flow field inside turbomachinery, which has been verified by many researchers.

近年来，CFD技术被广泛地应用于叶轮机械内部的三维粘性流场的数值模拟，其有效性逐步得到了研究者的肯定。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。