The GCAD system consists of five parts, such as parameter calculation, parametric drawing, expert system, aid functions and help system. The performance of GCAD system is well improved by making use of advantage of MATLAB and AutoCAD by MATLAB Engine.

• GCAD系统包括参数计算、参数化绘图、专家系统、辅助功能和帮助系统五个部分，通过MATLAB引擎，充分发挥了MATLAB及AutoCAD各自的优势；