转子系统启动时的瞬态动力学分析

Incoherent Scatter Radar model in Matlab. To calculate the theoretical spectra of radars.

These composite materials generally exhibit brittle damage behavior. The anisotropy in the material and different kinds of failure mechanisms make it difficult to accurately characterize the behavior of composite materials. The present work aims to verify and apply the Puck Failure Criteria using the commercially available finite element package ANSYS by writing a user-material subroutine in FORTRAN. The model is implemented with different post failure degradation schemes EWM/CSE.

tarjan算法求解有向图中的简单环，非常好用(Tarjan algorithm is very useful for solving simple rings in directed graphs.)

这是一本包含了机器人与机械臂建模以及仿真的书籍，具有很高的参考价值！(This is a book which includes the modeling and Simulation of robots and manipulators. It has high reference value.)

根据给定的实验系统的参数，对采用诱骗态方案的BB84系统进行仿真，得到在不同光纤传输距离下，系统安全密钥生成率R(According to the parameters of the experimental system, the BB84 system with decoy scheme is simulated, and the system security key generation rate R is obtained under different fiber transmission distance)

用于铣削动力学建模的稳定性叶瓣图分析（全离散法）(The full discrete method is used to map the stability lobe)

说明：  该模型是对50kW、380V、50Hz三相三电平逆变器的两个相同电路进行建模。IGBT逆变器采用SPWM技术，(8kHz载频)将直流电源从a +/-200Vdc源转换为220V AC, 50Hz。逆变器通过75kVA 220/380V变压器输入50kW电阻负载。变频器输出采用L-C滤波器滤除主要产生于8kHz开关频率倍数(Fh=n*8000 +/-k*50Hz)附近的谐波频率Fh。逆变器所需的12个逆变脉冲由PWM发生器块产生。该系统以恒定的调制指标在开环中工作。 电路1使用三电平桥块对逆变器进行建模。电路2使用独立的IGBTs和二极管块。用开/关延时块模拟死区，仅在电路1上应用。(It is easy for us)

说明：  400KW光伏参与并网，4组光伏模组共同输出400KW的功率(400KW photovoltaic participates in grid connection, 4 sets of photovoltaic modules jointly output 400KW power)

单相半桥式跟踪PWM逆变器仿真，电流滞环跟踪控制(Single phase half bridge tracking PWM inverter simulation, current hysteresis tracking control.)

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