预测通常与边界数据有关，例如用于运动补偿的运动矢量。
Prediction usually involves side data, such as a signal telling the decoder a motion vector to use for said motion compensation.
在张力波动范围窄、张力数值较小的控制系统中，采用矢量闭环控制，通过对收放卷速度的补偿，能收到较好的效果。
In the system with little tension fluctuation and numeric, by compensating the reeling in and out rate, adopting vector close-loop control can get better effects.
针对上述问题，给出了一种通过细化电压矢量合成扇区和开关信号选择表，优化定子磁链补偿电压的改进方法。
To solve these problems, a modified method is presented, which subdivides the voltage vector sectors and switching signal selection table, and optimized stator flux compensating voltage.
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