同步的

The working principle of the deployment control mechanism of appendages is investigated in detail, the feedback control model is established. And the effect of parameters to synchronized motion is discussed, in addition the nonsynchronous motion is investigated through the analysis of the principle for deployment control mechanism and driving mechanism and simulation.

针对在工程实际中发现的帆板展开运动不同步现象，本文详细分析了最常见的附件展开控制机构—CCL的工作机理，建立了CCL的反馈控制模型，并给出其具体的数学表达式，讨论了机构参数对帆板运动同步性的影响，进而通过对展开控制机构和展开驱动机构的机理分析和数值模拟讨论了帆板的不同步现象，并提出了减小不同步量的策略。

Permanent magnet synchronous motor driven by triphase sinusoidal current is research object in this paper. On the basis of analysis of the structure, movement principle and math model of PMSM, Fundamental theories and structure of the system of PMSM alternating current servo systems based on DTC are discussed. Then Simulation models of traditional PMSM DTC and PMSM DTC based on vectors subdivision are established separately.

本文以三相正弦波驱动的永磁同步电机为研究对象，在分析永磁同步电机结构及数学模型的基础上，系统阐述了基于直接转矩控制的永磁同步电机交流伺服系统的基本原理和系统构成，并在MATLAB仿真环境下分别建立了传统直接转矩控制和基于矢量细分算法的直接转矩控制系统的仿真模型。

Permanent magnet synchronous motor drived by triphase sinusoidal current is research object in this paper. Its mathematics models are set up and the different control menthods are discussed, controlling Principles of flux linkage and torque are discussed under DTC and the block diagram of PMSM with DTC is Presented. At last the control mothod is proved correct using MATLAB simulation software.

文章以二相正弦波驱动的永磁同步电机为研究对象，建立了永磁同步电机的数学模型，对于不同的控制策略进行了对比分析，并深入探讨直接转矩控制中永磁同步电机的磁链和转矩的控制思想，给出控制方案，最后利用MATLAB仿真工具验证了控制方案的正确性。

The frequency value in S phase is 4. 83 times of M phase, 2. 9 times of G1 phase, and 3. 41 times of unsynchronized cells. These results suggested that gene correction events were highly related to S phase. Then we compared the targeting efficacy for two groups of cells in S phase. One group was contact with thymidine and the other one went smoothly through S phase without replication blockage.

基于这种原因，我们对基因定点修复事件做了细胞周期定位分析，发现同步于S期的细胞群发生定点修复的效率明显高于其它各期以及非同步化的细胞，流式细胞仪检测S期定点修复效率为M期细胞的4.83倍，为G1期细胞的2.9倍，是未同步化细胞的3.41倍。

Using the "attractiveness - strength of the market" indicators and fuzzy math method, the paper calculated the sustainable potential of the development of tourism of historical and cultural village, classifies its elements\' combination through the "M-R" situation matrix, the existence of an ideal type and transformation possibility proves the interdependence between tourism development and heritage protection; establishes a index system about sustainable development of tourism, valuates the situation of sustainable development of the seven historical and cultural villages using factor analysis method, combines its status and potential with "S-P" situation matrix, and disport the sustainable development into four kinds: strong synchronous, weak synchronous, strong-dislocation and weak-dislocation.

其次，提出旅游发展的层次性是历史文化名村聚落、遗产和旅游属性整体性的集中表现，依此构建了评价旅游可持续发展现状的指标体系，用因子分析法计算了7个历史文化名村的旅游可持续发展现状，对现状和潜力进行组合，在&S-P&状况矩阵中按其组合状态将历史文化名村可持续发展分为强同步型、弱同步型、强错位型和弱错位型四种类型，强同步型及良性转化路径的存在，证明了聚落属性、遗产属性和旅游资源属性的整合是可行的。

Then the intellectual control technology of vacuum circuit breaker is discussed particularly. As a control object, the bi-stable permanent magnetic actuator is separated into basic principle so as to determine the nature of the whole. The direct-coupled models of magnetic fields for analysis and for calculation are presented. The static and dynamic characteristics of the models and dynamic behavior analysis and matching analysis for the vacuum circuit breaker with bi-stable permanent magnetic actuator are also discussed. For a further study, fuzzy neural network control technology based on synchronized-closing operation of vacuum circuit breaker is analyzed and the research conclusion is used for realizing the synchronized-closing of vacuum circuit breaker in the future.

论文首先分析了永磁机构的结构和工作原理；然后主要针对双稳态永磁机构真空断路器分析了在开断和关合过程中的静态磁场耦合模型、动态分析数学模型和真空断路器的动态特性，并就永磁机构和真空断路器的匹配进行了分析；最后分析了基于双稳态永磁机构真空断路器的同步操作问题，深入研究了同步操作的模糊控制原理和算法，研究结果为最终实现永磁机构真空断路器的同步操作奠定了基础。

In this paper,the threshold of the automatic control system for the synchronous differential lock of off road vehicle is analyzed.With the cornering model of a three-axle vehicle,the response limit of the system is analyzed theoretically.Through the analysis of the mechanical strength and the engaging characteristics of the dog clutch,the maximum difference of rotation speed between two parts of the dog clutch and hence the upper activation limit of the system are calculated

本文阐述了越野汽车差速器同步锁止机构自动控制系统的组成和工作原理，分析了其控制门限；利用所建立的三轴汽车转向行驶运动模型，在理论上确定了越野汽车差速器同步锁止机构自动控制系统的响应界限；通过对同步锁止机构牙嵌式离合器强度和接合特性的分析研究，确定了牙嵌式离合器允许的最高转速差，从而确定了动作限值的上限

Based on the characteristics and the demands of synchronization, a single nero forecast controller was presented, which was designed to eliminate synchronization error of upset force in flash butt welding. A press feedback loop was designed to solve the problem that it is uneasy to assemble force sensor in flash butt welding.

针对于大截面钢坯闪光焊顶锻阶段的特点和同步要求，提出了一种基于单神经元的同步误差预测控制方案，用于消除闪光焊顶锻过程中的系统之间顶锻力的同步误差；方案中采用液压系统压力反馈的方法解决了闪光焊中不方便安装里传感器的问题。

Then, two methods of timing synchronization based on the cyclic prefix and pilot sequence were introduced, and a novel timing synchronization method based on pilot sequence was presented, which provided a correlation peak with pulse shape.

由于OFDM系统中的定时同步要求和无线定位中的测时测距在本质上是一致的，所以本文紧接着分析了基于循环前缀和导频序列的两种定时同步方法，并提出了一种新的基于导频序列的具有脉冲形状相关峰的定时同步方法。

A nonlinear adaptive speed controller based on adaptive backstepping approach for permanent magnet synchronous motors with nonlinear coupling and parameter uncertainties is presented. With the preposed controller, the parameter uncertainties are compensated and high performance speed controller for permanent magnet synchronous motors is shown to be globally asymptotically stable. The scheme is robust to the parameter uncertainties and load torque disturbance.

针对永磁同步电动机系统的非线性耦合特性以及参数的不确定性，采用自适应反步控制实现永磁同步电动机的非线性控制，在补偿参数不确定性影响，提高系统的抗干扰能力的同时，实现了永磁同步电动机的高性能全局渐近稳定速度跟踪控制。

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。