目前对延迟系统的超前和滞后同步研究的并不是很多，对这方面的研究可做为以后研究工作的重点。
Currently, the anticipated synchronization and lag synchronization in the time-delayed systems are not a lot, for the research in this area can be used as the focus of future research work.
着重分析了电流参考信号超前角(滞后角)、系统参数和驱动方式对无刷直流电动机系统动态性能的影响。
The influence of the leading Angle (lagging Angle) of the current reference signal the parameters and drive mode of the system to the dynamic characteristics are analyzed.
为了实现软开关，引入超前管和滞后管的概念。
The concept of leading switches and lagging switches is introduced to realize soft-switching.
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