同步

Based on the analyzing synchronization modulate and synchronism modulate, for the defects of synchronism modulate, uses prefabricating SPWM waves table, soft open loop synchronization model, exactitude modify and coarse modify, implements phase locking and synchronization accuracy.

在对SPWM逆变电源的两种常规调制方式与同步模式分析的基础上，采用异步调制方式，同时对该调制方式的缺点采用了SPWM波形表格预制法与软开环同步模式、粗调与精调相结合的方法，实现了高精度的锁相与同步技术。

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。

Steady-state harmonics and transient performance of the conventional static synchronous compensator controllers are first investigated. Based on the sensitivity analysis of the STATCOM output power, it is found that the voltage magnitude is more effective than the phase angle in controlling the reactive power output. An analytical approach to harmonic analysis of a STATCOM based on Bessel functions of the first kind is described.

本博士论文首先分析传统静态同步补偿器(Static Synchronous Compensator， STATCOM)控制器的优缺点，利用对静态同步补偿器输出功率的灵敏度分析，得知要控制补偿器输出虚功大小时，直接对静态同步补偿器输出电压大小作控制，会比对相角作控制来得有效。

The integrated method to obtain the time-space consistence is discussed, which includes clock synchronization, time stamp and compensation algorithm. The layered hybrid synchronization mechanism based on GPS receiver is given, the ISAbus interface hardware and supporting software of GPS timer and software timer are developed. Finally, the synchronization precision is also quantitatively analyzed and testing.

基于时钟、时间和时空一致性问题的分析，提出了采用时钟同步、时戳机制和补偿算法实现时空一致性的综合方法，设计并实现了基于GPS接收机的分层式混合同步方案，开发了GPS时钟和软时钟ISA总线硬件接口和相应的支持软件，对同步精度进行了定量分析和试验测试。

This allows the user to control a Sigma-5 amplifier with an EtherCAT master in a variety of different modes (cyclic synchronous position, cyclic synchronous velocity, cyclic synchronous torque, interpolated position, profile position, profile velocity, or profile torque) and system architectures (line, star, tree, or daisy chain).

用户可以利用EtherCAT设备以多种不同的模式（同步循环位置，同步循环速率，同步循环转矩，替换位置，剖面位置，速度分布剖面图，扭矩剖面图）和系统结构（直线状，星状，网状以及链状）控制Sigma-5伺服放大器。

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

The state adjustors with given stability improve thesynchronization dynamic performance.(2) Adaptive synchronization and variable structure Backstepping synchronizationmethods are proposed for Liu chaotic system with uncertain parameters.

2提出了含不确定参数的Liu混沌系统的自适应同步和变结构Backstepping同步两种方法通过研究Liu混沌系统的单变量驱动和状态观测器两种同步方法，深入分析了Liu系统的结构特点。

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。

The purpose of the genlock circuitry is to recover a sample clock and the timing control signals (such as horizontal sync, vertical sync, and the color subcarrier) from the video signal.

同步锁相电路的作用，是从视频信号中恢复像素时钟和时序控制信号（比如行同步，场同步，色载波）。

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。