边界随时间udf

在abaqus中可以实现零厚度的cohesive插入(Implementing cohesive insertion with zero thickness)

说明：  固定翼无人机跟踪地面目标，速度范围25-50，离散式计算(target tracking by fixed-wing uav)

说明：  abaqus 帮助文档中的蠕变本构模型，包括时效强化模型和应变强化模型，以及一个模型的inp文件(Creep constitutive model in abaqus help document, including time-based reinforcement model and strain reinforcement model, and inp file of a model)

abaqus 帮助文档中的蠕变本构模型，包括时效强化模型和应变强化模型，以及一个模型的inp文件(Creep constitutive model in abaqus help document, including time-based reinforcement model and strain reinforcement model, and inp file of a model)

说明：  建立基于子空间辨识的PEMFC电特性状态空间模型。(A state space model of PEMFC electrical characteristics based on subspace identification is established.)

两个基于ANSYS平台的谱分析例子的命令流(Two command streams based on ANSYS platform for spectrum analysis)

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.)

这个程序是通过设置不同的参数来创建一个随机图，可以运行。(This program is to create a random graph for simulation.)

对地面固定目标设计了一种仅依赖测距传感器的制导律，不再需要传统的视线角信号以及目标和无人机自身的定位信息，再将该制导律推广到对地面匀速和变速移动目标的跟踪制导。相比于现有制导律，本课题提出的制导律结构更为简洁，仅有一个设计参数，并且制导策略更为合理。仿真结果表明所提出的制导律能够实现无人机对地面固定目标的稳定跟踪。(A guidance law that only depends on the ranging sensor is designed for the ground fixed target. The traditional line-of-sight signal and the target and the positioning information of the UAV are no longer needed. The guidance law is extended to the uniform and variable speed moving target Tracking guidance. Compared with the existing guidance law, the guidance law structure proposed by this subject is more concise, with only one design parameter, and the guidance strategy is more reasonable. The simulation results show that the proposed guidance law can achieve stable tracking of UAV fixed targets on the ground.)

估算锂电池soc的MATLAB simulink模型(MATLAB Simulink model for estimating SOC of lithium battery)