周期边界条件

一个水下无人自主航行器（AUV）的MATLAB/simulink仿真程序，写得很详细，有附带的s函数和m文件供参考学习。(A MATLAB / Simulink simulation program for Unmanned Unmanned Unmanned Underwater Vehicle (AUV) is written in great detail, with s functions and M files attached for reference.)

说明：  卫星姿态是指卫星星体在轨道上运行所处的空间指向状态。将直角坐标系的原点置于星体上，指向地面的Z轴反映偏航方向，Y轴反映俯仰方向，X轴反映滚动方向。星体在高空中沿局部地球铅垂方向和轨道矢量方向运行，不时地产生对三轴的偏移。姿态控制是通过姿态控制分系统（ACS）来实现，使用地平扫描仪可感应俯仰和滚动轴的姿态误差，使用速度陀螺仪和罗盘可感应偏航轴的姿态误差。(Satellite attitude refers to the spatial orientation of a satellite in orbit. The origin of the Cartesian coordinate system is placed on the star, the Z axis pointing to the ground reflects the yaw direction, the Y axis reflects the pitching direction, and the X axis reflects the rolling direction. The stars move along the direction of the earth's vertical direction and the orbit vector in the high altitude, resulting in the deviation of the three axis from time to time. Attitude control is realized by attitude control subsystem (ACS). The attitude error of pitch and rolling axis can be induced by using horizon scanner, and the attitude error of yaw axis can be induced by using speed gyroscope and compass.)

说明：  利用BP神经网络实现对民族，古筝，摇滚，流行四类音乐的有效分类。matlab实现，提供数据和详细代码，有解释！(The BP neural network is used to realize the effective classification of four kinds of music: nationality, zither, rock and roll, and popular music. Matlab implementation, provide data and detailed code, there are explanations!)

说明：  薄壁圆柱壳轴压屈曲非线性计算，采用模态缺陷作为初始缺陷(In the nonlinear calculation of thin-walled cylindrical shells under axial compression, modal defects are used as initial defects)

说明：  用MACCORMACK方法求解一维LAVAL管亚音速流动(solve one dimensional laval tube with the method in maccormack)

基于hypermill 10的五轴后处理转换器，优化了算法，中文界面。支持多种结构的五轴机床刀路仿真，输出高质量刀路。是五轴雕刻机的必备后处理转换器。(Based on the hyperMILL 10 five axis post processing converter, the algorithm, the Chinese interface is optimized. Support a variety of structure of the five axis machine tool path simulation, output high quality tool path. It is the necessary post-processing converter for the five axis engraving machine.)

求解线接触弾流润滑中的压力与膜厚分布，包括雷诺方程、膜厚方程。变性方程、粘压方程以及密压方程的求解。(Solution of pressure and film thickness distribution in line contact lubrication)

说明：  这是基于蚁群算法的无人机uav巡检实例程序，平台为matlab。(This is an example program of UAV path planning based on ant colony algorithm, which contains all the source code and the platform is matlab)

说明：  基于遗传算法的N×N阵列可重构天线的建模仿真脚本(genetic algorithm is applied to M N reconfigurable antenna array)

说明：  用C语言将相变温度-压力曲线写入udf，用于fluent中自定义函数功能，添加于物性参数。(Phase Transition Temperature-Pressure Curve)