自由度

In addition, for hexahedral element, in order to provide accurate solutions to problems involving almost incompressible materials, the displacement-pressure finite element formulation was built.

另外对于六面体单元，为了保证当材料的泊松比接近0.5时应力场计算的准确性，采用了静水压力自由度与位移自由度的凝聚算法。

Furthermore, the advantages of the genetic algorithm and the above single layer neural network are combined to yield a new identification technique. The network topology is employed to replace the procedure for solving the governing equation when GA is used to identify the system parameters of both the SDOF system and the MDOF system with or without noise contamination. The comparison is made between the predicted acceleration and the measured one for each case.

另外，结合类神经网路与基因演算法於结构动力参数识别，首先应用前述之单层类神经网路架构做为系统动力模式，再藉由基因演算法搜索符合该系统之权重值，然后将权重值代入网路架构以取代解微分方程式求得系统反应，最后再与量测反应做比较；同时亦利用该方法应用於进行识别含杂讯之输出入资料的系统权重值，以验证该方法应用於单自由度线性系统及多自由度线性系统识别之可行性。

For the condensed dynamic stiffness matrix in finite models which have finite number of freedom and any dynamic stifmess matrix of infinite system, the element of them is a transcendental function of eigenfrequency. And therefore transcendental eigenvalue problem is needed to be solved in order to get the natural frequency and modes of vibration.

对于有限自由度系统的缩聚动刚度矩阵和无限自由度系统的任何动刚度矩阵，其元素是频率的超越函数，因此求解结构固有频率及其振型归结为求解超越特征值问题。

Aimed at the angle legging defect existed in the acoustic location of high speed moving object by smart mine,the estimate of object flying track and coefficient recursion algorithm in flying module are developed in the paper.

文中针对智能雷弹对高速运动目标声定位存在一定角滞后的缺陷，开展了雷弹对目标的飞行轨迹的估计以及对飞行模型中的系数的递推算法，进而对单自由度和双自由度雷弹的拦截方位进行了预测。

Because of the nonuniqueness in the positional solution, it's not easy to test the performance of the coordinated control system. So the model of NN was built to convert the vector of the length of 6 jars into the vector of the position of the motion deck. It's fast and accurate for the lengthwise direction. The state space system model of the six degree freedom motion simulator was built by the equations of electrodraulic servo mechanism and the multi-body dynamics equation of the six degree freedom motion simulator,the vector of the length of 6 jars was the control variable.

本文结合六自由度运动模拟器的多体动力学方程和电液伺服驱动机构的特性，经简化得出了具有实际意义的六自由度运动模拟器整体系统的状态空间方程式，通过分析该系统的稳定条件和能控性，采用状态反馈对系统的状态方程式进行合理配置，从而建立了以运动模拟器杆长向量为控制变量的运动模拟器整体控制系统，并将该控制系统输出的杆长向量转换为位置向量。

This paper used parallel 6 degree of freedom platform to simulate random linear acceleration movement environment.

本文利用并联驱动六自由度平台来模拟随机线加速度运动环境，可实现空间六自由度模拟。

This paper used parallel 6 degree of freedom platform to simulate random linear acceleration movement environment. The platform can realize 6 degree of freedom movement simulation in space.

本文利用并联驱动六自由度平台来模拟随机线加速度运动环境，可实现空间六自由度模拟。

The local degree of freedom of clutter is a good reference for the choice of RD-STAP methods and the determination of the system DOF.

局域杂波自由度对实际应用中降维STAP方法的选取和系统自由度的确定具有关键的指导作用。

An algorithm for cable local vibration is presented based on the method of substructure and generalized degree of freedom, in which cable local mode is looked as degree of freedom.

利用子结构方法和广义自由度的概念，把拉索的振型作为自由度来考虑，提出了拉索局部振动的计算方法。

The basic idea was to discrete the structure and find the load function according to the energy criterion of buckling and the principle of random displacement method. As the critical load is the minimum of the load function, a problem of frame buckling can be transformed into an optimization problem. Therefore, the critical load can be found through solving the optimization problem.

先将结构离散为一个有限自由度系统；然后根据有限自由度系统平衡稳定性的能量准则和随机位移法的基本原理，建立符合能量准则的载荷函数，该函数不为零的最小值即为临界载荷，由此将稳定问题转化为无约束的多维优化问题；最后应用遗传算法求出相应于最优解的目标函数值。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。