The explosion in demand for wireless services experienced over the past 20 years has put significant pressure on system designers to increase the capacity of the systems being deployed. While the spectral resource is very scarce and practically exhausted, the biggest possibilities are predicted to be in the areas of spectral reuse by unlicensed users or in exploiting the spatial dimension of the wireless channels. The former approach is now under intense development and is known as the cogni- tive radio approach (Haykin 2005).
标签： Multi-Antenna Wireless Channels modeling
上传时间： 2020-06-01
上传用户：shancjb
The continuous progress in modern power device technology is increasingly supported by power-specific modeling methodologies and dedicated simulation tools. These enable the detailed analysis of operational principles on the the device and on the system level; in particular, they allow the designer to perform trade- off studies by investigating the operation of competing design variants in a very early stage of the development process. Furthermore, using predictive computer simulation makes it possible to analyze the device and system behavior not only under regularoperatingconditions, but also at the rim of the safe-operatingarea and beyond of it, where destructive processes occur that limit the lifetime of a power system.
标签： POWERHVMOS_Devices_Compact_Modeli ng
上传时间： 2020-06-07
上传用户：shancjb
A kinematically redundant manipulator is a serial robotic arm that has more independently driven joints than are necessary to define the desired pose (position and orientation) of its end-effector. With this definition, any planar manipulator (a manipulator whose end-effector motion is restrained in a plane) with more than three joints is a redundant manipulator. Also, a manipulator whose end-effector can accept aspatialposeisaredundant manipulator ifithas morethan sixindependently driven joints. For example, the manipulator shown in Fig. 1.1 has two 7-DOF arms mounted on a torso with three degrees of freedom (DOFs). This provides 10 DOFs for each arm. Since the end-effector of each arm can have a spatial motion with six DOFs, the arms are redundant.
标签： Autonomous modeling Planning Robots Path
上传时间： 2020-06-10
上传用户：shancjb
随着科技发展及工业4.0 进程推进,机械臂应用范围越来越广,并演化出各种各样的机械臂,如码垛机械臂、焊接机械臂、装配机械臂以及手术机械臂等。现利用solidworks 进行三维建模,设计制作一款基于stm32f103c8t6 单片机的主从式桌面级机械臂,该机械臂包括一个主动机械臂和一个从动机械臂,采用蓝牙传输信号方式进行同步运动,并且详细介绍了该机械臂材料选择、结构设计、工作原理、组成部分和设计特点。With the development of science and technology and the advancement of Industry 4.0, the application range of the mechanical arm has become wider and wider, and various types of mechanical arms, such as palletizing robot arms, welding robot arms, assembly robot arms, and surgical robot arms, have been developed. Now using solidworks for 3D modeling, design and manufacture a master-slave desktop-level robot arm based on stm32f103c8t6 single-chip microcomputer. The robot arm includes an active robot arm and a slave robot arm, which uses Bluetooth to transmit signals for synchronous motion. The material selection, structural design, working principle, components and design features of the manipulator are introduced.
标签： stm32f103c8t6 单片机
上传时间： 2022-03-27
上传用户：
Mathematical modeling has become an important part of the research and devclopment work in engineering and scicnce. Retaining a competitive edge requiresa fast path between ideas and prototypes, and in this regard mathematical modeling and simulation provide a valuable shortcut for understanding both qualitative and quantitative aspects of scientific and engineering design. To assist you in gaining this edge, COMSOL Multiphysics offers state-of-the art performance, being built from the ground up with a Java3D interface and C/C++ solvers.The Acoustics Module is an optional package that extends the COMSOL Multiphysicsmodcling cnvironment with customized user interfaces and functionality optimizcd for the analysis of acoustics. Like all modules in the COMSOL family, it provides a brary of prewritten ready-to-run models that make it quicker and casier to analyze disciplinc-specific problcms.
上传时间： 2022-06-19
上传用户：
VIP专区-嵌入式/单片机编程源码精选合集系列（102）资源包含以下内容：1. DMX512在PIC单片机上的汇编接收程序.2. 用XC9572来控制LCD12864的读写等时序,用89C52的总线方式来控制LCD.3. 对25AA040的EEPROM进行SPI读写.4. 一个测试USB器件PDIUSBD12的上位机源代码.5. 这个源码测试过,可以用.电路图也可以根据程序画,非常方便..6. VB开发的进行PLC通讯测试的程序.7. 使用梯形图开发的PLC控制程序.8. 开发的PLC梯形图程序.9. cgnal c8051f020 4*6键盘 4*8 液晶显示 大容量存储.10. 《嵌入式系统的C程序设计》电子版.11. maxim的对sd卡的串行spi模式进行读写操作控制的程序源码.12. 在用计算机进行数据传输时.13. u boot介绍.14. C++编写的针对PCI卡.15. 一个QT4开发的小界面。我也是新手做的一个小程序。希望和大家一起讨论QT.16. 基于AT89C2051的室内红外遥控电动车电路设计.17. 南京大学电子系抢答电路仿真课件.18. 这个是在UNIX下.19. 大名鼎鼎的AudioCodes的VOIP处理芯片AC483的数据手册,很多语音卡都是用这个芯片的..20. 《嵌入式开发实例》全书所附源代码.21. C++编写的针对CP5611 PCI卡的通讯程序Demo.22. H桥驱动电路.23. 红外遥控接收电路,常用于控制系统中.24. 电动小车的电机驱动及控制.25. 微型红外追踪及无线遥控车设计,这个文档包括一些毕业设计中所常用的设计电路.26. system c好资料--modeling with SystemCTM Workshop Version 1.4.27. LPC2124 + proteus 仿真 ADS v1.2编译 实现数字显字功能.28. ALI－5661芯片MP3方案3100版本详细资料。 包含 M5661 Flash Support List_SDK_070122 M5661 User Manual_v1.2_051023 .29. 80c296sa平台的ads7864采集程序.30. 串行外设接口SPI的应用.31. 书名是电器控制与PLC.32. power pc 405 ep核心板及其周边的原理图和pcb图.33. 中文版的keil操作手册.34. 信号被白噪声干扰.35. ControlCAN 开发程序例程1.36. ControlCAN 开发程序例程1.37. 运用Labview进行虚拟示波器设计的源码.38. 运用Labview进行虚拟示波器设计的源码.39. 运用Labview进行虚拟示波器串口设计的源码.40. compact pci footprint for design,using pads2005 open it ,like you need it !.
标签： 光电技术
上传时间： 2013-04-15
上传用户：eeworm
