DIRECT
共 286 篇文章
DIRECT 相关的电子技术资料,包括技术文档、应用笔记、电路设计、代码示例等,共 286 篇文章,持续更新中。
用择多函数实现反电动势滤波的无传感器BLDC控制.
<p>本应用笔记介绍一种采用dsPIC数字信号控制器(Digital Signal Controller,DSC)或PIC24单片机来实现无刷直流(Brushless Direct Current,BLDC)电机无传感器控制的算法。该算法利用对反电动势(Back-Electromotive Force,BEMF)进行数字滤波的择多函数来实现。通过对电机的每一相进行滤波来确定电机驱动电压换相的时刻。
xinlinx-Spartan6开发板原理图详解
<p>The information disclosed to you hereunder (the Materials ) is provided solely for the selection and use of Xilinx products. To the maximum extent permitted by applicable law: (1) Materials are mad
电动汽车永磁无刷直流电机控制器设计
<p>对某四轮独立驱动电动汽车轮毂电机进行研究,设计一种永磁无刷直流电机控制器.以STM32F103RBT6芯片为基础,对电机驱动电路、采样电路和保护电路分别进行硬件设计与分析;同时,采用模块化软件设计方案,对该控制器的软件系统进行升级.实验验证表明:所设计的电机控制器能使电机响应迅速、转速稳定、无超调,且电动车动力输出性能良好.</p><p>A permanent magnet brushles
解读5G八大关键技术
<p>解读 5G 八大关键技术 【摘要】5G 不是一次革命,5G 是 4G 的延续,我相信 5G 在核心网部分不会有太 大的变动,5G 的关键技术集中在无线部分。 在进入主题之前,我觉得首先应该弄清楚一个问题:为什么需要 5G?不是因 为通信工程师们突然想改变世界,而炮制了一个 5G。是因为先有了需求,才有了 5G。什么需求? 未来的网络将会面对:1000 倍的数据容量增长,10 到 100 倍的
Android传感器、无线传输与媒体硬件功能开发视频教程全套
01.课程简介.mp4
9.1M2020-03-03 16:32
02.传感器:概述.mp4
85.1M2020-03-03 16:32
03.传感器:动作传感器.mp4
165.2M2020-03-03 16:32
04.传感器:位置传感器.mp4
41.2M2020-03-03 16:32
05.传感器:环境传感器.mp4
28.4M2020-03-03 16:32
06.NFC技术:概述.m
RESTful+Rails+Development+Building
This book is focused on designing and developing Representational State Transfer (REST)<br />
platforms in Rails. REST is the architectural style of the Web, consisting of a set of<br />
constraints t
Wideband+TDD
This book is an outgrowth of the pioneering development work done by InterDigital Com-<br />
munication Corporation in 3rd Generation TDD WCDMA Technology. Many engineers<br />
and managers were invol
Analysis+of+Device-to-Device+Communications
Device-to-device(D2D) communications are now considered as an integral part of future 5G networks<br />
which will enable direct communication between user equipment (UE) without unnecessary routing v
TTP233D系列单通道触控芯片 台湾通泰永嘉微电优势代理
<p class="MsoNormal">
产品型号:<span>TTP232-CA6 </span>
</p>
<p class="MsoNormal">
产品品牌:<span>TONTEK/</span>通泰<span></span>
</p>
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封装形式:<span>SOT23-6</span>
</p>
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51系列指令系统表及快速记忆法
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<span style="color:#111111;line-height:140%;font-family:Arial;font-size:10.5pt;">MCS<span>-</span><span>51</span><span>使用汇编语言指令,它共有</span><span>44</span
DSPACK231
DSPack是一套使用Direct Show和DirectX技术的类和组件。含全部源码。Delphi7控件。
频率合成技术在现代电子技术中具有重要的地位。在通信、雷达和导航等设备中
频率合成技术在现代电子技术中具有重要的地位。在通信、雷达和导航等设备中,它可以作为干扰信号发生器;在测试设备中,可作为标准信号源,因此频率合成器被人们称为许多电子系统的“心脏”。直接数字频率合成(DDS——Digital Direct Frequency Synthesis)技术是一种全新的频率合成方法,是频率合成技术的一次革命。本文主要分析了DDS的基本原理及其输出频谱特点,并采用VHDL语言在
这篇教程是为初学者准备的
这篇教程是为初学者准备的,只要会简单的VC++编程以及一点立体几何的基础知识即可。通过它,可以了解到Direct3D的基本概念,学会绘制简单的几何图形,并掌握光源、材质和纹理的基本用法。
AVR single-chip developed by a very low threshold, as long as the computer will be able to study the
AVR single-chip developed by a very low threshold, as long as the computer will be able to study the development of AVR microcontroller. Only a single-chip ISP download beginners line, the editing, de
A direct digital frequency synthesizer based on cordic algorithm implemtnted with FPGA
A direct digital frequency synthesizer based on cordic algorithm implemtnted with FPGA
direct mapping associative mapping set associative mapping
direct mapping
associative mapping
set associative mapping
While faster processors, larger memory, and powerful graphics are fundamental requirements for works
While faster processors, larger memory, and powerful graphics are fundamental requirements for workstations, users
are also demanding a low-cost, solution-based approach wrapped around a standards-ba
Abstract—Stable direct and indirect decentralized adaptive radial basis neural network controllers
Abstract—Stable direct and indirect decentralized adaptive radial basis
neural network controllers are presented for a class of interconnected
nonlinear systems. The feedback and adaptation mechanis
本系统分电压测量和信号产生输出两大部分
本系统分电压测量和信号产生输出两大部分,电压测量部分以模拟电路为主,配合放大模块、A/D转化模块、显示模块;通过凌阳单片机进行数据处理,在误差允许范围内显示测量电压值。信号产生以直接数字式频率合成器(Direct Digital Frequency Synthesis,简称DDS或DDFS)为核心,经过AT89S52对DDS芯片内部进行控制,使之输出标准正弦波形,利用编程实现频率预置、步进,达到电
In 揚erformance of multi-carrier DS CDMA Systems?we apply a multi-carrier signaling technique to a di
In 揚erformance of multi-carrier DS CDMA Systems?we apply a multi-carrier signaling technique to a direct-sequence CDMA system, where a data sequence multiplied by a spreading sequence modulates multip