矢量控制中死区补偿的仿真研究

基于python的人脸识别门禁系统，实现对人脸的录入与识别功能 ，毕业设计 附论文 可移植树莓派

Visio图标-最新最全的网络通信图标库，适用于visio2007 2010等各个版本

5G设备系统厂家技术专家编写的培训材料，比较全面、深入地介绍了5G核心网的系列知识。3GPP 5G ongoing Releases5 G Phase1及 Phase2主要支持功能(SARe-15标准5G服务化移动性/会话/eMB特性56 Voice语音业务策略控制4G/5G高效用户面架构接入管理over nrEPS Fallback架构互操作路径选择Re-16标准5G服务化56到3的切片漫游及网络能力大数据分析mMTc架构增强SRVCC互操作开放功能标准化 URlLCE特性1Re15阶段关注最紧急的应用案例以满足市场需求,完成5G核心网整体架构及基本功能的定义,攴持·Re16阶段重点进行现有核心网架构的增强和完善,包括完整的 JeMBB,mMTC和RLC三个场景的内容eMBB业务基础特性、VoNR语音功能以及 EPS Fallback功能服务化架构及网络切片能力增强以及在未部署 VoltE情况下5G语音的连续性方案设计888DCONTENTS。,15G核心网标准5G核心网络架构∴∴∴∴35G核心网特性与关键技术8888.".∴∴∵∴∴∴,5G System ArchitectureNCEFNG-CP LNENREPCFUDMAF4G网络架构② Nef nmf Npce nudoNamfNsmf③3S1-MMESeaMMEPCRFAUSFAMFSMFMMES1LTE-UySGOperators IP以5G网络架构F-UTRANsErvIngUEPDNServicesGatewayGatewayRANS1-U(e.g. IMS, Pss etc.UEDIUPFDN,,。"。。,,相比EPC核心网架构,5G核心网变化①控制转发分离网络结构更加扁平化,控制面功能集中部署、用户面功能可以根据业务需可下沉到网络边缘,减少路由迂回;②控制面功能模块化设计将网元(NE)拆解为多个网络功能(NF)服务,网络功能服务可以独立扩展,按需编排和分布式部署;③服务化接口网元之间的点到点接→网终功能之间点到多点接口,各网终功能之间可以根据需求任意通讯,优化通讯路径,提高通信效率;④功能组件集中管理引入NRF,可以实现网终功能服务自动管理(自动注册/更新/去注册、自动发现和选择、状态检测、认证授权等);⑤统数据管理NF( Network FunctionAMF:唯一的N1和N2接凵终结点、注册及迕接管理、移动性及可达性管理、接入认证及安全锚点功能等;·sM":会话管理(建立、修改、释放)、卩P地址分配、选择和控制UP、终结会话部分NAs消息、策咯执行和Qos的控制部分、下行数据通知、确定会话SSC模式、计费等;PCF:支持统一的策略控制框架、提供策略规则到控制平面功能执行( SME AMF);支持面向ασS、计费、按需会话管理、按需接入及移动性管理制定策略;AUsF:认证服务器功能,为UE执行认证流程、保持安全上下文等;NRF:维护部署的NF实例信息,提供网络功能注册和发现功能,使得控制平面功能能够彼此发现和直接通信;UDM:存储用户签约数据、策略数据等·UPF:分纠路由和转发、分组检测、用户平面部分策略执行、流量使用量上报、UL-CL、分支点支持多宿主PDU会话、下行数据缓存等;NSsF:为UE选择服务的网络切片实例、决定为UE服务的 AMF Set或候选AMF表;·NEF:维护开放的网络服务列表、作为面向应用的入口功能等;BsF:实现5G用户会话绑定功能;· NWDAF:网络数据分析功能,负责采集并分析网络状态信息,并将网络状态分析信息通知/发布给订阅它的PCF和NSsF,供PCF决策和NSsF切片选择;Rel-15仅支持对切片负载级别的分析;8885G System Architecture for non-roaming scenario5G网络架构新增特性◆网络切片新增网络切片选择功能NSSF。网络可针对不同QOS业务,部署不同切片服务化架构通过网络功能重构,控制面形成多个独立网络功能,NF部署更加灵活控制面新增NRF,实现NF服务化管理功能、NF寻址、服务发现功能、网络切片选择控制面NF接口协议栈为HTTP,接口形式为RestfulAP的服务化接口◆边缘计算EC·∪PF只处理分组路由和转发,可下沉至网络边缘,支持灵活的本地业务应用5G边缘UPF完全由SMF选择、控制,解决了4G边缘计算在业务连续性、移动性、计费等方面存在的问题网络能力开放新增网络开放功能NEF,易于运营商部署更多业务应用为运营商提供增加业务收入的可能888D5G System Architecture for roaming scenario,,,,。。。分为本地疏导架构和归属地路由架构;在本地疏导架构(如图)中,漫游UE在拜访网络中3Gpp连接数据网络;在归属地路由NSSFNEFNRFPCFUDMNRF架构中,漫游UE在归属网络中NnssNorfNaNudeNorf连接数据网络:VSEPPhSEPP安全代理SEPP( Security EdgeNsmfNausNpcProtection Proxy)部署在PLMNAMFSMFAUSEPCFNEF网络边缘,作为非透明传输代理节点,通过N32接,保护N1N2N4VPLMNHPLMN归属地和拜访地之间控制面漫UE(R)ANUPFDN游消息的传递;实现拓扑隐藏,内部的网络拓扑结构对外不可见;SBI( Service Based Interface服务化接口N2传输协议HTP20ersN4∴序列化协议JSON,JSON相比现有Dⅰ ameter性能ANUPESME: :: :AMFPCUDMNRENSSSFNsmfNamfUdm::: Nhrf::: Ns上有差距,但通用性、可描述性、可读性更强服务化接口交换接口风格REST;基于HTTP/RESTFUL的通信接口NF之间生产者科消费者模式,交互模型为RQJSONRSP和 SUB-NOT|FY;Http 20TLS4G网中大量使用 Diameter协议,56网务今EPC网络有联互通需求,因此5G信令网中应攴持两种信令协议共存与互转的情况;服务化接口的优势i化接口设计:网络功能服务间的交互解耦,不同服务实例的接口可重用,无需逐按照业务流程定义接口消息优化参数传递:参数只在请求者和响应者间传递,无需跨越整个业务流程,提鬲实时性,可靠性支持网络功能的局部调整:功能更新明确到服务,只对请求者和服务者有影响,对体业务流程影响小,提高功能调整效率∴有利于业务流程的标准化推进:无耑重复榘构、接凵和流程等标准化过程,聚焦更新服务,甚至可以先开发再标准;888D…∵∵∴Control plane Protocol stack∴∴∴∴∴°。UE连接到网络中使用一个唯一的N1NAS连接,唯一的N1终结点位于AMF;N1接口上的NAS协议包括 NAS MM部分和 NAS SM部分;NAS MM消息包括注册管理和迕接管理的NAS消息;.: NAS SM支持处理UE和SMF之间的会话管理,支持PDU会话用户面的建立、修改和释放会话管理信令和短消息通过 NAS MM协议传输:

头文件Delay.h（网上很难找到的，建议下载后收藏，并放到keil的INC文件夹中，以后就可以直接调用了）

Visual Basic数据库开发实例精粹,是一本非常优秀全面的书籍。

linux下的简单文件服务器和客户端程序

《MATLAB数学建模与仿真》是2016年清华大学出版社出版的图书，作者王健、赵国生.本书从数学建模与仿真的角度对MATLAB进行详细介绍和讲解。全书共2篇，即基础篇和应用篇，涵盖绝大部分数学建模问题的MATLAB求解方法。前10章为基础篇，讲解有关MATLAB的基础知识，包括MATLAB的入门、数值运算、符号运算和图形功能、M文件编程、Simulink仿真模型和科学计算等内容，在此基础上介绍应用数学领域的问题求解，如基于MATLAB的微积分问题、线性代数、积分变换、常微分方程、概率论与数理统计问题的数值解法等。第11章至第15章为应用篇，介绍如何利用MATLAB求解实际的数学建模问题，给出了

CAD+VBA+DVB文件加密和解密工具

不错的汽车动力学教材，是参与汽车底盘电子开发的动力学基础。Reza n. jazarVehicle DynamicsTheory and ApplicationsSpringerReza n. jazarDept of Mechanical EngineeringManhattan collegeRiverdale. NY 10471ISBN:978-0-387-74243-4e-ISBN:978-0-387-74244-1Library of Congress Control Number: 200794219c 2008 Springer Science+ Business Media, LLCAll rights reserved. This work may not be translated or copied in whole or in part without thewritten permission of the publisher(Springer Science+Business Media, LLC, 233 SpringStreet, New York, NY 10013, USA), except for brief excerpts in connection with reviews orscholarly analysis. Use in connection with any form of information storage and retrievalelectronic adaptation, computer software, or by similar or dissimilar methodology now knownor hereafter developed is forbidden. The use in this publication of trade names, trademarksservice marks and similar terms, even if they are not identified as such, is not to be taken as anexpression of opinion as to whether or not they are subject to proprietary rightsPrinted on acid-free paper987654321springer. comKavoshmy daughter, Vazan,and my wife, MojganHappiness is when you win a race against yourselfPrefaceThis text is for engineering students. It introduces the fundamental knowledge used in vehicle dymamics. This knowledge can be utilized to developcomputer programs for analyzing the ride, handling, and optimization ofroad vehiclesVehicle dynamics has been in the engineering curriculum for more thana hundred years. Books on the subject are available, but most of themare written for specialists and are not suitable for a classroom applicationA new student, engineer, or researcher would not know where and howto start learning vehicle dynamics. So, there is a need for a textbook forbeginners. This textbook presents the fundamentals with a perspective onfuture trendsThe study of classical vehicle dynamics has its roots in the work ofgreat scientists of the past four centuries and creative engineers in thepast century who established the methodology of dynamic systems. Thedevelopment of vehicle dynamics has moved toward modeling, analysisand optimization of multi-body dynamics supported by some compliantmembers. Therefore, merging dynamics with optimization theory was anexpected development. The fast-growing capability of accurate positioninsensing, and calculations, along with intelligent computer programming arethe other important developments in vehicle dynamics. So, a textbook helpthe reader to make a computer model of vehicles, which this book doesLevel of the bookThis book has evolved from nearly a decade of research in nonlineardynamic systems and teaching courses in vehicle dynamics. It is addressedprimarily to the last year of undergraduate study and the first year graduatestudent in engineering. Hence, it is an intermediate textbook. It providesboth fundamental and advanced topics. The whole book can be coveredin two successive courses, however, it is possible to jump over some sections and cover the book in one course. Students are required to know thefundamentals of kinematics and dynamics, as well as a basic knowledge ofnumerical methodsThe contents of the book have been kept at a fairly theoretical-practicallevel. Many concepts are deeply explained and their application empha-sized, and most of the related theories and formal proofs have been explained. The book places a strong emphasis on the physical meaning andapplications of the concepts. Topics that have been selected are of highinterest in the field. An attempt has been made to expose students to aPrefacebroad range of topics and approachese There are four special chapters that are indirectly related to vehicle dy-amics: Applied Kinematics, Applied Mechanisms, Applied dynamics, andApplied vibrations. These chapters provide the related background to understand vehicle dynamics and its subsystemsOrganization of the bookThe text is organized so it can be used for teaching or for self-studyChapter 1"Fundamentals, "contains general preliminaries about tire andrim with a brief review of road vehicle classificationsPart I"One Dimensional Vehicle Dynamics, " presents forward vehicledynamics, tire dynamics, and driveline dynamics. Forward dynamics refersto weight transfer, accelerating braking, engine performance, and gear ratiodesignPart II"Vehicle Kinematics, presents a detailed discussion of vehiclemechanical subsystems such as steering and suspensionsPart IIT"Vehicle Dynamics, employs Newton and Lagrange methodsto develop the maneuvering dynamics of vehiclesPart Iv "Vehicle Vibrations, presents a detailed discussion of vehi-cle vibrations. An attempt is made to review the basic approaches anddemonstrate how a vehicle can be modeled as a vibrating multiple degreeof-freedom system. The concepts of the Newton-Euler dynamics and La-grangian method are used equally for derivation of equations of motionThe RMS optimization technique for suspension design of vehicles is intro-duced and applied to vehicle suspensions. The outcome of the optimizationtechnique is the optimal stiffness and damping for a car or suspended equipmentMethod of presentationThis book uses a fact-reason-application"structure. The "fact"is themain subject we introduce in each section. Then the reason is given as a" proof. The application of the fact is examined in some examples. Theexamplesare a very important part of the book because they show howto implement the facts. They also cover some other facts that are neededto expand the subjectPrerequisitesSince the book is written for senior undergraduate and first-year graduatelevel students of engineering, the assumption is that users are familiar withmatrix algebra as well as basic dynamics. Prerequisites are the fundamentals of kinematics, dynamics, vector analysis, and matrix theory. Thesebasics are usually taught in the first three undergraduate yearsPrefaceUnit SystemThe system of units adopted in this book is, unless otherwise stated, theinternational system of units(SI). The units of degree(deg)or radian(rad)are utilized for variables representing angular quantitiesSymbolse Lowercase bold letters indicate a vector. Vectors may be expressed inan n dimensional Euclidian space. ExamplerCUppercase bold letters indicate a dynamic vector or a dynamic matrix, such as force and moment. ExampleFo Lowercase letters with a hat indicate a unit vector. Unit vectors arenot bolded. ExampleLowercase letters with a tilde indicate a 3 x 3 skew symmetric matrixassociated to a vector. Examplea3211An arrow above two uppercase letters indicates the start and endpoints of a position vector. ExampleON = a position vector from point o to point Ne The length of a vector is indicated by a non-bold lowercase letterExampleCapital letter B is utilized to denote a body coordinate frame. ExampleB(ocgB(Oxyz)B1(o1x19121)ⅹ11PrefaceCapital letter G is utilized to denote a global, inertial, or fixed coordinate frame. ExampleG(XYZG(OXYZRight subscript on a transformation matrix indicates the departureframes. ExampleRB= transformation matrix from frame B(oxyz)Left superscript on a transformation matrix indicates the destinationframe. ExampleRBtransformation matrix from frame B(o cgz)to frame G(OxYZ)Capital letter R indicates rotation or a transformation matrix, if itshows the beginning and destination coordinate frames. Example0BSIn a0Whenever there is no sub or superscript, the matrices are shown in abracket. ExampleCOS asin a osIn aCOs O0e Left superscript on a vector denotes the frame in which the vectoris expressed. That superscript indicates the frame that the vectorbelongs to; so the vector is expressed using the unit vectors of thatEr= position vector expressed in frame G(OXYZ)Right subscript on a vector denotes the tip point that the vector isreferred to. ExamplePsition vector ofexpressed in coordinate frame G(OXYZ)Right subscript on an angular velocity vector indicates the frame thatthe angular vector is referred to. ExampleB= angularof the body coordinate frame B(oxyz)

【实例简介】找ModbusTCP好久，一点也不全，现传一个client端包含报头和协议部分,免费随便下。