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Aircraft_DMP_dsc
使用mpu6050的dmp获得的欧拉角和四元数(Dmp obtained using mpu6050 of Euler angles and quaternion)
- 2013-08-20 15:15:24下载
- 积分：1
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联赛积分榜自动生成
资源描述
详细介绍： 您只需选择各只求对本轮比赛的胜负情况，系统就会自动生成该轮比赛后各队的排名情况。包括胜负场次及积分情况！这套程序适合于有全国足球甲A联赛积分榜的站点。
- 2022-03-14 10:09:15下载
- 积分：1
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单片机课件
针对MCS-51单片机的硬件结构和原理、指令系统、汇编、中断、定时器、并行扩展等进行了讲解。(The hardware structure and principle, instruction system, assembly, interrupt, timer and parallel expansion of MCS-51 single chip computer are explained.)
- 2020-06-18 00:40:02下载
- 积分：1
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ADS1118_2
使用STM32驱动ADS1118，电压采样信息打印到串口上(STM32F103--->ADS1118)
- 2021-04-09 17:58:59下载
- 积分：1
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sistem
Arama motoru sistemlerinde kullanı lı r.
- 2013-12-15 21:46:29下载
- 积分：1
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ts
html for website easy to use
- 2020-06-23 16:20:02下载
- 积分：1
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1602QG
F340 LCD1602 模块程序 (F340 LCD1602 module program)
- 2011-05-12 23:08:46下载
- 积分：1
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Wiegand_led
wiegand protocol. C++ project.Leds for Attiny
- 2012-01-27 04:20:37下载
- 积分：1
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Libraries
CMSIS + STM32_USB-FS-Device_Driver + STM32F10x_StdPeriph_Driver(CMSIS+ STM32_USB-FS-Device_Driver+ STM32F10x_StdPeriph_Driver)
- 2014-03-04 22:25:43下载
- 积分：1
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shuanglushuzihecheng
摘要
电能表作为用电量的测量工具广泛的应用于各种场合。在电能表校表系统中,需要的最基本的输入信号源是高精度双路正弦信号源,并要求可对其频率、相位、幅值进行调节,来对电能表进行校准。
基于单片机的程控信号源设计，运用数字调相、数字调幅和数字调频等技术，要求实现相位、幅度、频率的高精度程控调节。本文设计了一种利用锁相环频率合成技术和数字波形合成技术组成的程控低频正弦波信号发生器，并给出了调幅、调频、调相的实用电路，频率调节通过改变8253计数器的分频系数来实现；相位调节由51单片机预置计数器的计数初值来完成，幅度的调整通过改变DAC1210II的参考电压来实现，使频率分辨率达0.01Hz,相位调节精度达0.1°，并介绍电路中的主要芯的功能及使用。输出正弦波频率和幅值的精度高，稳定性好，失真度低，电路简单、可靠、便于程控。
关键词：数字合成信号源；程控；调幅；调频；移相；
(Abstract
Meter consumption as the size of the measurement tool is widely used in various occasions. In single-phase power meter verify system, the most basic needs of the input signal is the source of two-way high-precision sine signal source, and may request its frequency, phase, amplitude in a certain step to adjust to the imitate of the actual electricity load with a right meter calibration.
Design of the programmable signal supply controlled source，which based on the MCU，including digital phase adjustment，distal amplitude adjustment，digital frequency adjustment etc．The system should achieve high quality digital adjustment of phase, amplitude and frequency. This paper describes the use of a PLL frequency synthesizer technology, and digital wave form synthesis technology consisting of program-controlled low-frequency sine wave signal issued devices, and applies the amplitude， frequency， phase of practical circuit. Frequency can be adjusted through a change in the 8253 counter-frequ)
- 2021-04-08 20:19:00下载
- 积分：1
