同步

Simulation results show that the proposed method has minimal time deviation and can realize synchronization rapidly. The method can feasibly be applied to Ad Hoc network based on TDMA.

仿真结果表明，该方案具有比较小的时间同步偏差，能够快速的实现整个网络的时隙同步，可应用于基于TDMA的Ad Hoc网络。

It does not need an external power supply to excite the rotor field and hence the field winding and slip rings are eliminated. This thesis sets up the mathematical model of the permanent magnet synchronous motor in SIMULINK.

本文主要研究了永磁同步电机交流伺服系统的建模仿真和基于TMS320LF2407A数字信号处理器的系统实现，主要内容如下：建立了永磁同步电动机在dq坐标系中的数学模型，在SIMULINK中建立了仿真模型。

The validity of the method is demonstrated by comparison with results obtained from tests on a practical drive system. The influence of damper winding on performances of self-controlled synchronous motor, especially on commutation process and commutation limit, are analyzed in detail. It is shown that damper winding has little effect on increasing overload capability. The influences of field winding on torque, commutation process and overload capability are analyzed also.

然后在此基础上，分析了阻尼绕组和励磁绕组对自控式同步电动机性能的影响，包括对电磁转矩、换流过程和过载能力的影响，重点分析了阻尼绕组对换流过程和换流极限的影响，讨论了阻尼绕组在自控式同步电动机中的作用，得出阻尼绕组对提高过载能力作用不大的看法。

The concurrent language relation formula is presented and proved in the synchronous synthesis of Petri net systems, and it can be applied to judge the liveness and deadlock-freeness of a synthesized system.

该语言关系式可用于判定同步合成Petri网系统的活性与无死锁性，同时给出了同步合成Petri网系统活性与无死锁性的充要条件。

The sufficient conditions for achieving synchronization of this fractional differential system are derived by using the stability criterion of fractional linear equation.

用三种不同的方法考虑分数阶Lorenz混沌系统的修正投影同步，基于分数阶线性方程的稳定性理论给出了实现同步的几个充分条件，数值模拟说明了所给方法的有效性。

The article analyzed the Franz Schubert's Piano Sonata, Op.120 all-around with the elements of multidimensional structures, such as the pitch, rhythm, and textures. It discussed the effect of change and ratio to the drive and structure of the music through the three aspects of combination: the synchronous change and symmetry ratio of the element rhythm, the asynchronies change and the asymmetry ratio of the element rhythm, and the synchronous with asynchronies changes, and compared them with the Heinrich Schenker system.

内容提要：本文以舒伯特《钢琴奏鸣曲OP.120》为例，对该部作品的音高、节奏、织体等多维音乐要素进行了综合分析，从要素节律的"同步变化"和要素节律间的"匀称比率"、要素节律的"异步变化"和要素节律间的"非匀称比率"以及要素节律的"同步变化"、"异步变化"的结合三方面，来探讨了这些"变化"、"比率"对音乐的动力、结构力的作用，并与申克的还原体系分析方法进行了比较。

In this paper, a three-dimensional diagram of subsynchronous frequency impedance characteristics is obtained based on the research of the subsynchronous frequency impedance model.

正确分析TCSC次同步频率阻抗特性是研究TCSC抑制次同步谐振能力以及进行TCSC参数设计的重要基础。

RPP type time belt is much superior in friction with pulley, noise and jumping, also can put out much bigger power to any other classical timing belt.

RPP型同步带在带轮摩擦，噪音和弹性方面有极强的优势，输出功率大于其它传统的同步带

It will have the load resistance when the friction of the resistance round rubs with the wheel friction.

在摆臂过程中，手臂与臂动同步挡杆、传动杆、摆杆、轮轴和阻力轮进行同步运动。

The theoretic analysis and the practical application prove that using full-wave Fourier transform algorithm in line difference protec

通过理论和实际两方面的对比总结出，对使用矢量同步方法的线路差动保护采用全波差分傅氏算法后可以大大减小谐波带来的同步误差，提高保护装置的可靠性。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。