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1·This paper USES fractional order hold (FROH) to replace the traditional zero-order hold (ZOH), designs a numerical control system for the fin.

论文采用分数阶保持器(FROH)代替传统的零阶保持器(ZOH)，对减摇鳍系统进行数字控制设计。

2·This paper focused on the research on the digital effect of SPWM inverter systemperformance from two aspects of zero-order-hold and one-step-delay.

本文从零阶保持和滞后一拍控制这两个方面来研究：SPWM逆变电源的数字控制对系统性能的影响。