Relevant calculation was carrried out by using MATLAB tools for programming, and the optimal results was achieved.
利用MATLAB工具编程计算完成设计工作，达到优化效果。
Through VB programming, complete the calculation of noncircular pitch design etc and export the design results, then achieve Computer Aided Design of noncircular gear pitch.
通过VB编程，完成非圆齿轮节曲线设计、根切校验、封闭性条件、凸性校验等计算，并输出设计结果，实现非圆齿轮节曲线的计算机辅助设计。
Results of calculation example show that the advantages of the composite difference scheme are high accuracy, loose limitation of stability and convergence, easy programming and so on.
算例计算结果表明，该组合格式具有精度高，稳定收敛限制宽松，易于编程等优点。
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