a3_6

利用相场晶体模型，计算枝晶生长等。标记为相场晶体模型。(Dendrite growth is calculated by phase field crystal model. It is labeled as phase field crystal model.)

用红外控制步进电机转动角度，并且用LCD显示，采用51单片机控制，转速误差在1%之内(With infrared control stepper motor rotation angle, and with LCD display, using 51 single-chip microcomputer control, speed error is within 1%)

通过仿真可以进一步了解悬架性能，很具有使用意义(The performance of the suspension can be further understood through the simulation)

利用相场方法，计算枝晶生长，标记为相场动力学模型B。(Dendrite growth was calculated by phase field method and marked as phase field dynamics model B.)

说明：  这是MATLAB和CST联合仿真工具包，个人进行了一些完善和修改。(This is a joint simulation toolkit of MATLAB and CST. I have made some improvements and modifications.)

1、目标速度引起的失真，时间膨胀因子10%、chirp中心频率偏移5%。 2、超高速运动对脉冲压缩的影响，多普勒频移补偿(Distortion caused by target speed, time dilation factor 10%, and chirp center frequency offset 5%. Effects of ultra high speed motion on pulse compression and Doppler frequency shift compensation)

说明：  实现角度向弧度的转换，并判断所属象限。。。(Realize the conversion of angle to radian, and judge the quadrant.)

matlab生成一个随机相位屏，可以模拟大气和电离层，结果为彩色图。(Matlab generates a random phase screen, which can simulate the atmosphere and the ionosphere. The result is a color map.)

说明：  abaqus建立三维椭球模型，主要用于有限元细观力学分析，建立几何模型(Abaqus establishes 3d ellipsoid model, which is mainly used for finite element mesomechanical analysis and geometric model establishment)

计算飞机起飞着陆时候的起落架中液压油的阻尼力(calculate the damping force of the landing gears)