discrete adj. 1.分离的,分立的;显然有别的。 2.不连续的;【数学】离散的;【哲学】抽象的 (opp. concrete)。 A nebula is really a discrete mass of innumerous stars. 一团星云实际上是无数星体不连续的集合体。 adv. -ly
Only certain discrete frequencies are left without benefit of external stabilization due to the feed system . 只有某些个别的频率没有利用供应系统的外部稳定作用。
It has three kinds starting modes : the slope voltage starting , the limiting current starting and the discrete frequency control starting 该软起动控制器具有三种起动方式:斜坡电压起动,限流起动和分级变频起动。
Any of several devices that convert incident electromagnetic radiation of mixed frequencies to one or more discrete frequencies of highly amplified and coherent ultraviolet , visible , or infrared radiation 激光器使偶然的混杂频率的电磁辐射,变为一个或更多的高度强化和连续的紫外线、可见光或红外线辐射的分离频率仪器中的一种
Within this scope , users can get almost any frequency clock by configuring the register , as the tune - process is nearly continual ( in fact there are many discrete frequency points ) . the main circuit of the clock generator is a cppll ( charge pump pll ) designed in a method 该时钟发生器可以向系统提供频率范围是93 . 75k - 180mhz的时钟信号,用户可以通过配置寄存器的方法使时钟发生器输出自己需要的频率,而且这一调频过程几乎是连续的(实际上是众多离散点构成的线性近似) 。
The experiment consequently prove that this soft starter operates well , has the simple construction , light weight , small volume , controllable starting current and starting time , smooth starting and can reduce the current impact for motor starting . its discrete frequency control starting mode enable it to control the induction motors which drive vated load during starting 实验结果证明此软起动控制器性能良好,具有结构简单、无触点、重量轻、体积小、起动电流及起动时间可控制、起动过程平滑等优点,能有效地减小电机起动时的电流冲击。
Soft starters decline only the electric voltage and do not decline the frequency , and make the starting torque turn small , therefore the soft starters be applicable only to the induction motors which drive the low starting torque machine such as blower fan and pump . this paper designed a soft starter adopting the discrete frequency method to start induction motors . it declines not only the electric voltage , but also makes the frequency lower at the same time , so starting torque turns more 由于软起动器只降压不降频,电机的起动转矩较小,所以传统软起动器只适用于风机、水泵类低起动转矩的负载。本文设计并研制了一种采用分级变频方法的新型软起动控制器,在降压的同时实现有级变频,从而提高了异步电动机的起动转矩。
The theory of discrete frequency method is analyzed , and is simulated . the results show that the application of discrete frequency method can not only reduce the current impact , but also increase the starting torque . the thesis analyses detailedly and designs the system ' s hardware units and software units 论文对分级变频理论进行了深入剖析,并利用matlab对分级变频起动过程进行了仿真,论证了运用分级变频起动不仅可以减小电流冲击,而且可以提高起动转矩。