shadow_rewrite

实用开关电源设计 实验电源 交流电源 直流电源(Practical switching power supply design experimental power AC power DC power supply)

随着并联机构学理论的日益成熟，并联摇摆台以其大刚度、高精度和重载等优点，广泛应用于机械、航海和航天等领域。其中，以车辆模拟台的应用最为广泛。车辆在行驶过程中由于受到路况等扰动因素的影响，会产生横摇、纵倾、转艏、前冲、横移和升降共6种位姿的运动，而通过六自由摇摆台能将车辆的这些运动真实的再现出来。 本文以项目——六自由度重型摇摆台的研制为依托，在对国内外六自由度摇摆台的研究现状做了比较深入、系统分析的基础上，对车辆重型摇摆台与负载锁定结构进行了分析优化，主要的研究内容如下： 首先，对六自由度重型摇摆台进行运动学建模，分析、优化机构在六种独立姿态及部分耦合位姿情况下支撑杆的运动范围，最终确定了支撑杆合理的转角空间和上下铰链座的结构，提高了机构的运动学、动力学性能。 (With the development of theory of parallel mechanism, parallel plat quickly enters the international market for high stiffness、high precision and heavy load, which is widely used in mechanical、navigation and aviation, etc. Among these parallel plats, the vehicle simulator is the most widely used. Due to the disturbance factors of ups and downs of the different roads, vehicle has 6 degrees of freedom during its traveling movements, such as rolling、pitching、yawing、surging、swaying and heaving that can be simulated in the use of 6-DOF platform. Based on the project of heavy platform, this paper optimizes the platform and the load locking structure after the in-depth and systematic analysis of 6-DOF parallel plat at home and abroad, the main research contents are as follows: Firstly, this paper establish the kinematic modeling that is used to analyze the rotating range of the axis belonging to the supporting pole in many traveling conditions, such as one of six movements indepe)

数据流图定义 DFD = Data Flow Diagram,数据流图 数据流图（Data Flow Diagram，DFD）是一种能全面地描述信息系统逻辑模型的主要工具，它可以用少...共20次编辑(Definition of data flow diagram DFD = Data Flow Diagram, data flow diagram data flow diagram (Data Flow Diagram, DFD) is an information system can fully describe a logical model of the main tools, which can be used 20 times less ... Edit)

模数转换器(ADC)将模拟量——现实世界中绝大部分现象的特征——转换为数字语言，以 便用于信息处理、计算、数据传输和控制系统。数模转换器(DAC)则用于将发送或存储的 数据，或者数字处理的结果，再转换为现实世界的变量，以便控制、显示信息或进一步进 行模拟处理。(Analog-to-digital converter (ADC) analog- the vast majority of real-world phenomena characteristic- converted into digital language, in order for the information processing, computing, data transmission and control system. A digital-to-analog converter (DAC) is used to transmit or store the data, or the result of the digital processing and then converted to the real world variables, in order to control, displays a message or further subjected to analog processing.)

单词扫描系统设计维护以及应用研究生毕业论文(English-scanning system maintenance and application design graduate thesis)

基于USB接口的脉搏检测仪本文设计该检测仪由硬件和软件两部分组成硬件电路包括数采集电路放大滤波电路控制电路及电源电路(ThePulsedetectingInstrumentBasedonUSBInterface)

OFDM系统中基于奇异值分解降秩的MMSE信道估计算法，非常经典(OFDM channel estimation by singular value decomposition.pdf)

ASP_NETAJAX在Web开发中的应用

是不错的MIS规划书，基于C、java、vb、vc等都可以，很好的编程资料(It s a good planning book about MIS,basing on Cjavavbvc...,good programing material)

channel trucking verses frequency hopping uplink