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In order to save the space of memory, the local C/A code generator based on RAM, NCO based on CORDIC algorithm and the code phase detector based on Robertson approximate algorithm were proposed in this paper.

设计过程中,为了节约存储空间还提出了基于RAM的本地C/A码产生器、基于CORDIC算法的NCO和基于Robertson近似算法实现的码相位鉴别器等。

Based on varying process of generator terminal parameters after excitation fault, shortages of excitation protective principle of static stability boundary and asynchronous impedance boundary are analyzed. It proposed that excitation fault research relates to large-disturbance stability. Because dynamic power-angle character of generator after excitation fault is non-sinusoidal, there are differences between dynamic power-angle character and static state power-angle character. So it isn't ideal to protective operation result based on small-disturbance stability and static stability boundary criterion. At the same time, it proposed that asynchronous boundary impedance criterion is a constant reactive power circle moving adown j Xd′. It can ensure complete loss-of-excitation generator measuring impedance enter into the circle, but can't ensure the other condition measuring impedance including impossible losing synchronism enter. So loss-of-excitation protection would be maloperation when system voltage drops short and recovers or generator rejects load.③Based on stability principle, it puts forward setting conditions and calculation method of generator loss-of-excitation protection by direct measuring power-angle.

以励磁故障后发电机端的相关参数的变化为基础,通过对以静稳定边界和异步阻抗边界作判据的两类三种现行励磁保护在原理上存在的缺陷分析,发现:励磁故障是一个大干扰稳定性问题,励磁故障后的发电机的动态功角特性与静态功角特性有很大的差异,已远非正弦曲线,因此基于小干扰稳定性原理、以静稳定边界作判据的保护必然动作不理想;异步边界阻抗判据是一个下移j Xd′的等无功阻抗圆,它可以保证完全失磁后的发电机测量阻抗能进入该阻抗圆,但不能保证完全失磁之外的其它状态不会进入该阻抗圆,因此在系统电压短时下降或发电机突然甩负荷等情况下可能启动该保护使之误动。

With respect to syntax, the roles of tagmeme in the structure of word and sentence and Chomsky's Generative-Transformational Grammar are discussed. The spatial relation theory and existing research achievements are investigated. Having noticed the shortage of the capability of topological and metrical relation in the description of spatial information structure, the author proposes Combinational Qualitative Geometry based on the two invariables under ordinary transformations, distance ratio and direction difference, the CQG-based spatial relation system between topological and metrical constraint is thus constructed, on which several spatial relations such as parallel, perpendicularity, co-linearity, sequence and direct neighborhood are derived. Based on extended theory of spatial relation, the language anamorphosis is analyzed from the aspects of phonetics, semantics and syntax. The mere geometric and formalized spatial relation is then integrated with concrete geographic ontology to accommodate richer and indicative spatial configuration of spatial information in the different geographic context. Finally a syntax framework for spatial information is put forward.

在语法结构方面,首先阐述了法位和法素在语法结构词法和句法中的地位和作用,以及Chomsky生成转换语法的核心内容;详细介绍了地理信息系统空间关系理论及现有的研究成果;在分析现有的拓扑关系和量度关系对空间信息结构描述能力不足的基础上,提出了基于长度比和角度差两个不变量的组合定性几何,以此建立了介于拓扑及量度约束之间的组合定性关系体系,并以此为基础派生出平行、垂直、共线、次序、直接邻近等空间关系描述;本文基于扩展的空间关系理论,详细讨论了空间关系在语音、语法和语义三个方面的语言变体,将纯几何和纯形式化的空间关系与具体的地理本体结合起来,可以获得更为丰富的、更能反映空间关系在不同语言上下文中具体体现的组合关系;最后给出了一个空间信息的语法结构的基本框架。

The simulation results show that the vector control system based on this improved scheme has better dynamic and static performance. It solves a lot of problems such as larger error in the MRAS based on the back electromotive force when the motor runs across the zero speed and the instability based on the instantaneous reactive power in the regenerating mode and has high estimating precision.

仿真表明基于该方法的矢量控制系统动静态性能好,能有效解决反电动势模型参考自适应方法在速度过零点辨识误差大以及瞬时无功功率模型参考自适应方法在转速给定为负阶跃时转速不稳定问题,转速估计精度高。

A novel node positioning algorithm, called IMP-HCRL, is proposed, which adopts three improvements, including the strategy based on wireless transmission range, the strategy based on bisector point and the strategy based on isodynamic point, to overcome the drawbacks at computational complexity and localization accuracy of HCRL with low communication overhead simultaneously.

分析了HCRL定位算法的原理和过程,在继承了HCRL低系统通信开销优点的基础上,针对其在计算复杂度和定位精度方面的不足,应用了3种改进策略-基于节点无线射程的改进策略、基于等比点的改进策略和基于等力点的改进策略,提出了改进的IMP-HCRL算法。

In this paper,we propose a remote video surveillance system architecture based on ARM and DSP,which divides the hardware into two modules.The main control module based on Philips LPC2114 is used to control the system,and the video image processing module based on Blackfin ADSP-BF533 is used to compress MPEG-4 video streams,and transmit the video streams in network.

本文提出了一种基于ARM和DSP的远程视频监控系统的体系结构,该体系结构将硬件分为两大模块,以Philips LPC2114为中央处理器的系统控制模块主要完成系统的控制功能,以Blackfin ADSP-BF533为中央处理器的图像处理模块主要完成MPEG-4视频流的压缩及自适应网络传输。

The new style Web sevice metioned in this paper is not only a implementation tool of Web Sevices, but also a basic constructure tool of application system based on XML. By this mean, we design and implement XML Portal tool based on XML, which is a Portlet container based on filter-styled Web Services. It provide a environment for development and deployment of Portlet.

本文所实现的新样式的Web服务,不仅可以作为Web服务的实现工具,还可以作为以XML为中心的应用系统的基础构建工具,利用这种方式本文设计并实现了以XML技术为基础的XML Portal工具,它是基于过滤器样式的Web服务而实现的Portlet容器,为开发者提供了一个开发和部署Portlet的环境。

The CA system is set up based on the domain and the AA system is set up based on the organization unit. Secondly the authorization schema based on the attribute certificate which is the important part is designed and implemented.

组织单元是管理结构,基于该模型的网格设计中的AA中心则是根据网格组织单元建立的; 2 本文的重点是设计并实现了基于属性证书的网格授权机制。

The idea of zero cost cycle is devised to solve the critical problem of minimum cost flow. Additional related results obtained include: the theory of bottleneck analysis based on minimum cost augmentation chain and zero cost cycle; the proof of the existence condition and the coherence condition of bottlenecks based on network output; methods to solve various kinds of process bottlenecks; the development of the algorithms of optimization and bottleneck analysis of MCPN (i. e, MCPN-CBA1 and MCPN-CBA2); a series of scheduling strategies and algorithms based on cost analysis, profit evaluation and bottlenecks of process flow line.

四。提出了基于工艺流程成本分析、利润评价的两类生产网络模式:最小成本生产网络和最大利润生产网络;首次提出零成本圈的概念,从而提出并研究了最小费用流的临界问题;创建了基于最小成本增广链、零成本圈的瓶颈分析理论,证明了过程瓶颈的存在性条件以及基于网络加工量的瓶颈一致性条件;给出了求解各类瓶颈的关键技术,研究开发了MCPN的瓶颈分析算法MCPN-CBA1、MCPN-CBA2;提出了一系列基于工艺流程成本分析、利润评价及过程瓶颈的调度策略和调度算法。

This paper researches the technique of mobile orientation and the GPSOne technique based on CDMA, based on it linking the technique and application,the paper puts forward location based service flat roof in order to falling the application developing doorsill.This paper gives the design patterm.And combining the patterms of application validates the validaty of location based service system.

本论文深入学习了无线定位的技术理论及体系结构,掌握了基于CDMA网络的无线定位技术GPSOne,在此基础上,将其与业务相结合,提出了位置服务本地接入子系统平台,并给出其设计的模型结构,解决了降低业务接入门砍的技术问题,并结合开展业务模式的分析验证了位置服务本地接入子系统的有效性。

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推荐网络例句

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。