虫虫首页| 资源下载| 资源专辑| 精品软件
登录| 注册

medium

medium是一个轻量级内容发行的平台,允许单一用户或多人协作,将自己创作的内容以主题的形式结集为专辑(Collection),分享给用户进行消费和阅读。
  • automation-and-robotics

    In this book for the optimisation of assembly conveyor lines we are dealing with series part production featured by a medium complexity degree and a medium number of individual components and assembly technique alternatives. Modern production techniques for medium to large series products or mass production usually involve assembly conveyor lines. They still use hand labour more or less automated. The aim is to have monotonous and similar in type operations or such causing fatigue, stress and production traumas, gradually replaced by automated assembly cycles, means and techniques. This usually widely involves industrial robots and handlers. Higher productivity, lower cost and higher quality of assembled products are usually required.

    标签: automation-and-robotics

    上传时间: 2020-06-10

    上传用户:shancjb

  • PW5200系列_2.0.pdf规格书下载

    The PW5200A/ PW5200C is high efficiency synchronous, PWM step-up DC/DC converters optimizedto provide a high efficient solution to medium power systems. The devices work with a 1.4MHz fixedfrequency switching. These features minimize overall solution footprint by allowing the use of tiny,low profile inductors and ceramic capacitors. Automatic PWM/PFM mode switching at light loadsaves power and improves efficiency

    标签: pw5200

    上传时间: 2022-02-11

    上传用户:

  • 基于有蓝牙共存情况下的WiFi射频模块设计

    移动通信网络由于带宽和技术的限制,远远不能满足人们不断高涨的无线上网需求。Wi-Fi作为无线接入技术MLAN的主流标准口益成熟,它能够随时随地高速连接到Internet,极大地满足了用户对无线上网需求,受到消费者的青睐。因而越来越多的移动终端都集成了Wi-Fi功能,Wi-Fi和蓝牙样成为移动终端的标配。随之而来的是wi-Fi和蓝牙都工作在2.4CHZz ISM频段而引发的互相 扰问题,导致数据吞吐量下降,语音质量恶化失真,极端状况下甚至导致链路断开而不能正常工作。因此,必须寻求有效的措施和方法,实现两种技术在近距离的和谐共存,这已成为非常迫切的技术需要,也成为人们研究的一个热点和难点。近距离WiFi和蓝牙互相1扰的问题,目前已经形成了非常多的有效解决机制,包括基于Wi-Fi的PTA(Packet Traffic Arbitration)、AWMA(Alternating Wireless medium Access)和DSE(Deterministic Spectral Excision),其中PTA和AWMA机制在Wi-Fi側MAC层实现,通过协调Wi-Fi和蓝牙的帧发射时间来避免相互干扰:而DSE是在Wi-Fi侧物理层PHY实现,通过一个可编程带阻滤波器(Notch Filter)来阻止来白蓝牙的窄带干扰。还有基于蓝牙侧的AFH(Adaptive Frequency Hopping),它通过跳频,自动避开被干扰的频点,从而大大提高了蓝牙传输性能。

    标签: 蓝牙共存 wifi 射频模块

    上传时间: 2022-06-20

    上传用户:zhanglei193