该程序主要用于平面直角坐标系之间的转换，也可用于别的转换！-The program is mainly used for flat conversion between Cartesian coordinates can also be used for other conversions!

在不同坐标系下的飞机坐标的转换，用于飞机建模的过程中。-Conversion of plane coordinates in different coordinate system, used in aircraft modeling process.

park变换，利用simulink将abc三相电压电流转换为dq旋转坐标系下的参数(Park transform, using simulink to convert the ABC three-phase voltage current into the parameters of dq rotation coordinate system.)