-
dds_test
说明: 直接数字式频率合成器DDS设计、Verilog。
产生的信号可以是正弦波或方波、三角波、锯齿波等,自选。
采用DDS技术,将所需生成的波形写入ROM中,按照相位累加原理合成任意波形。
此方案得到的波形稳定,精度高,产生波形频率范围大,容易产生高频。
本实验在设计的模块中,包含以下功能:
(1)通过 freq 信号输入需要的频率的值;
(2)通过 wave_sel 信号选择所需的波形;
(3)通过 amp_adj 信号选择波形放大的倍数。(DDS design of direct digital frequency synthesizer, Verilog.
The generated signal can be sinusoidal or square wave, triangular wave, sawtooth wave and so on, optional.
By using DDS technology, the required waveforms are written into ROM, and arbitrary waveforms are synthesized according to the principle of phase accumulation.
The waveform obtained by this scheme is stable, accurate and easy to generate high frequency waveform.
This experiment includes the following functions in the designed module:
(1) Input the required frequency value through freq signal;
(2) Choosing the required waveform by wave_sel signal;
(3) Select the multiplier of waveform amplification by amp_adj signal.)
- 2019-01-19 16:07:50下载
- 积分:1
-
Lpfilter_20190503
说明: 环路滤波器是通信信号调制解调中最重要的一个部分,环路滤波器设计的好坏将直接影响到接收机的性能指标,二阶锁频辅助三阶锁相环路滤波器可以稳定跟踪具有加加速度的信号源,是现代通信中非常实用的技术,本文中详细编写了单载波信号产生模块、信道噪声模块、数字正交下变频模块、鉴频鉴相模块、环路滤波器模块,并包含了完整的testbench模块,对于初学者非常有用。(Loop filter is the most important part of communication signal modulation and demodulation. The design of loop filter will directly affect the performance index of receiver. The second-order frequency locking assisted third-order phase-locked loop filter can stably track the signal source with acceleration speed, which is a very practical technology in modern communication. In this paper, the single carrier signal generation module and channel noise are written in detail Sound module, digital orthogonal down conversion module, frequency and phase detection module, loop filter module, and contains a complete testbench module, which is very useful for beginners.)
- 2020-11-11 01:27:25下载
- 积分:1
-
程序
数模中求解偏微分方程时,在已知数据的基础上进行线性插值拟合。利用差分法求解该模型,先用网格划分区域,对 区域内部节点做泰勒展开。对偏导数进行离散化处理。(tthe solution to the PDE problem in mathematical modeling)
- 2019-06-22 18:21:45下载
- 积分:1
-
fangzhen
说明: 更改参数可以获得不同大小缺陷的仿真信号,并且画出相应的图像,可以用于轴承故障定量诊断(The simulation signals of different size defects can be obtained by changing the parameters.)
- 2019-02-28 13:38:28下载
- 积分:1
-
STATISTICAL FEATURES EXTRACTION FOR CHARACTER
说明: without installation on your computer. Recognize text and characters from PDF scanned documents (including multipage files), photographs and digital camera captured images.
- 2019-11-02 05:34:00下载
- 积分:1
-
deque
deque自己写的具体实现,一些可能用到的功能没有给出,不当之处还请大家完善(deque realize,some fuctions)
- 2020-06-20 12:40:02下载
- 积分:1
-
潮流计算节点电压
说明: 给定的运行条件有系统中各电源和负荷点的功率、枢纽点电压、平衡点的电压和相位角。待求的运行状态参量包括电网各母线节点的电压幅值和相角,以及各支路的功率分布、网络的功率损耗等(The set operating conditions included the power of each power source and load point, the pressure of the junction point, the pressure of the balance point and the phase angle.The operation conditions to be obtained included the pressure range and angle of each bus node, the power distribution of each branch, the power loss of the network, and so on)
- 2021-04-27 10:14:27下载
- 积分:1
-
LabVIEW
使用LabVIEW开发平台编制的程序称为虚拟仪器程序,简称为VI。LabVIEW(Laboratory Virtual instrument Engineering Workbench)是一种图形化的编程语言,它广泛地被工业界、学术界和研究实验室所接受,视为一个标准的数据采集和仪器控制软件。LabVIEW集成了与满足GPIB、VXI、RS-232和RS-485协议的硬件及数据采集卡通讯的全部功能。它还内置了便于应用TCP/IP、ActiveX等软件标准的库函数。这是一个功能强大且灵活的软件。(Using the LabVIEW development platform known as the virtual instrument programmed process, referred to as VI. LabVIEW (Laboratory Virtual instrument Engineering Workbench) is a graphical programming language, it is widely used by industry, academia and research laboratories accepted as a standard data acquisition and instrument control software. LabVIEW integration and satisfaction with GPIB, VXI, RS-232 and RS-485 protocol communications hardware and data acquisition card full functionality. It also has built easy to use TCP/IP, ActiveX software such as standard library functions. This is a powerful and flexible software.)
- 2010-03-09 21:07:51下载
- 积分:1
-
游戏男孩模拟器virtual_gameb DOS版(C语言)
GAMEBOY模拟器virtual_gameb DOS版(C语言)-GAME BOY emulator virtual_gameb DOS version (C language)
- 2022-02-11 11:49:49下载
- 积分:1
-
code
大数据处理,分析过程中,需要对数据进行清洗,删除缺失的数据程序(Large data processing, the analysis process, you need to clean the data, delete missing data procedures)
- 2017-09-29 16:25:39下载
- 积分:1