An algorithm for constructing rational spline closed curve which is tangent to the given polygon is described.
描述了一种与给定多边形相切的有理样条曲线的算法。
2
The polygon will be automatically closed if the first and last points are not identical.
多边形会自动关闭，如果第一个和最后一个点是不相同的。
3
A lot of experiments for open loop control and closed loop control have been made according to the polygon voltage vector control. The experiment result shows that the new scheme is feasible.