amra

说明：  在 Carsim 中分别搭建好前车与后车的车辆纵向动力学 模型。雷达系统将探测到的后车信息和前车信息传递给行车 间距控制系统，此控制系统根据安全距离模型计算出后车车 辆期望加速度，此期望加速度经过 PID 控制器调节后，输入 给车辆动力学系统，车辆动力学系统基于此加速度输出期望 的制动压力和节气门开度，并将此值传给制动及节气门控制 系统，此系统输出相应的制动力及节气门开度给后车动力学 系统，进行制动及加速控制。(The vehicle longitudinal dynamics of the front car and the rear car were built respectively in Carsim Model.The radar system transmits the information of the vehicle behind and the vehicle in front to the vehicle Spacing control system, this control system according to the safe distance model to calculate the rear car Vehicle expected acceleration, the expected acceleration after PID controller adjustment, input Given to the vehicle dynamics system, the vehicle dynamics system is based on this acceleration output expectation Brake pressure and throttle opening, and pass this value to brake and throttle control System, which outputs the corresponding braking force and throttle opening to the rear car dynamics System for braking and acceleration control.)

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：  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)

基于CARSIM的驾驶员预瞄模型实现无人车路径跟踪(The pilot model realizes the path tracking of the driverless car)

说明：  Ei-centro地震波三向数据，可用于各大有限元数值仿真软件，输入地震加速度时程数据。(EI Centro seismic wave three-way data)

abaqus经纬编织织物模型，umat子程序(ABAQUS warp and weft knitted fabric model, UMAT subroutine)

说明：  3.5 GHz 是 5G 网络部署的重要频段，本文结合射线跟踪模型，对 3.5 GHz 的无线传播特性进行了研究，并于 1.8 GHz 进行了对比，提出 5G 网络初期部署的建议(3.5GHz is an important frequency band for 5g network deployment. In this paper, the radio propagation characteristics of 3.5GHz are studied in combination with ray tracing model, and compared with 1.8GHz. Suggestions for initial deployment of 5g network are proposed)

abaqus 使用技巧-Inp文件中单元类型改变时，一定要注意，划分网格的时候是否，选用了一种望各类型，比如4变形和3变形的区别，如果用注意将所有的单元类型都做相应的修改。这说明单元类型由2个因素决定，1网格形状，2计算任务.(Abaqus tips-When changing the unit type in the Inp file, be sure to pay attention to whether or not to select a type, such as 4 deformation and 3 deformation, if you use the attention, all the unit types should be modified accordingly. This shows that the unit type is determined by two factors, 1 grid shape, 2 calculation tasks.)

实现有源电力滤波器的电流跟踪控制，能够代替传统PI控制策略(Active power filter current tracking control can replace the traditional PI control strategy)

说明：  该程序是大型有限元ADINA的源程序代码(This program is the source code of large finite element ADINA.)