异步的

Based on the characteristic equation of asynchronous motor,the conception of slip control was discussed.

以异步电动机机械特性方程为基础，讨论了转差率控制的基本概念，分析了转差率控制的基本规律，设计了基于转差率闭环控制的异步电动机变频调速系统，并介绍了该系统的主要特点。

Because DC motor has commutator, it is limited to use. People took into account VC motor.

由于有换向器的存在，使直流电机的使用受到很大限制，于是人们开始转向异步电机，但异步电机的调速性能难以满足生产的要求。

By means of the discrete frequency spectrum, the frequency spectrum leakage s of the conventional DFT and the DFT with a Hanning window are comparatively analyzed in this paper.

利用离散频谱详细对比分析了DFT的频谱泄漏和加汉宁窗DFT的频谱泄漏现象，讨论了用异步顺序采样值计算电量产生误差的原因，提出了利用异步顺序采样值精确计算电量的方法，实现了畸变电量的精确测量。

The characteristic of the method is that driving condition and clock pulse for flip-flops are obtained at first hand by means of the state transitio n drawingand that designing asynchronous sequential cir-cuits and synchr onous sequential circuits can be unified.

时序逻辑电路可分为同步和异步，然而采用传统的时序电路的设计方法时，即使是同步时序电路的设计也需要7步[3]，要进行复杂的计算来求状态方程、驱动方程，既繁琐又容易出错；对异步设计就更为复杂了。

Next, the finite element model of induction motor is established by using Maxwell 2D transient module, and the inverter control circuit is also designed by its own circuit design editor. Consequently, a complete field-circuit coupled simulation model of inverter control system is presented.

接下来，利用Ansoft公司的Maxwell 2D瞬态模块建立了异步电动机的有限元模型，并且采用其自带的电路编辑器Schematic Capture设计了异步电机逆变器控制电路，构建了一个完整的变频控制系统场路耦合仿真模型。

A real time heterogeneous system communication scheme, which maintains the coherency between design and verification, is proposed. A method for solving metastability in heterogeneous system with high efficiency is also proposed.

提出了一种异步系统的实时通信机制，该通信机制具有设计和验证一致的特点，并对异步系统通信中必然存在的亚稳态问题进行了分析，提出了高效的解决办法。

On the base of analyzing the principle of AC motor speed control by terminal voltage in details, the simulation model of MATLAB/Simulink was set up.

在对异步电动机调压调速控制的基本原理进行充分分析的基础上，建立了异步电动机调压调速控制系统的MATLAB / SIMULINK仿真模型。

On the base of analyzing theprinciple of AC motor speed control by terminal voltage in details,the simulation model of MATLAB/Simulink was set up.

在对异步电动机调压调速控制的基本原理进行充分分析的基础上，建立了异步电动机调压调速控制系统的MATLAB/SIMULINK仿真模型。

Through theoretical analysis and calculation current change relations of three common open-phase of a three-phase asynchonous motor are derived in the paper and discusses protective action of bimetallic trip thermorelay in open-phase running of three-phase asynchronous motor according to its basis.

通过理论分析和计算，推导出了三相异步电动机三种常见断相形式的电流变化关系，并以此为依据对双金属片式热继电器在三相异步电动机的断相运行中的保护作用给予评述。

YZB series crane and metallurgical variable voltage and frequency tree 0phase motor (hereinafter called'the motor').combing the functions ofcrane and pase asynchronous motors and strong points of the variable voltage and frequency technology have advanges of high mechanical strength and overload capacit,wide range of variable and stead operation. the basic technical data of the motor accords withIEC34-1 international standard and GB755 national standards stipulated with performances reached the 90s word level.the motor cam ne ised for a;; lomds of cranes.

YZB系列起重及冶金用变频调速三相异步电动机是将起重及冶金用三相异步电动机的特点与变频调速的优点集与一体，具有过载能力大机械强度高、调速范围宽、运行稳定的特点，其基本技术条件符合IEC34-1国际标准和GB755国家标准规定，电动机各项性能指标同国外九十年代水平相当。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。