The FPGA can realize a more optimized Digital controller in DC/DC Converters when compare to DSPs. In this paper, based on the FPGA platform, The theoretical analysis, characteristics, simulation and design consideration are given. The methods to implement the digital DC/DC Converters have been researched. The function module, state machine of digital DC/DC controller and high resolution DPWM with Sigma- Delta dither has been introduced. They are verified by experiments on a 20 W, 300 KHz non-isolated synchronous buck converters.
标签: Converters controller optimized Digital
上传时间: 2013-12-31
上传用户:tzl1975
This software is developed to provide ease with controller design. For PID control, options are given to design and analyse the compensated and uncompensated system. You are free to choice among Proportional PI, PD and PID mode of control. Both frequency and time domain characteristics can be observed. Special Menus are given to observe time and frequency response plots. For Statefeedback controller similar options are given. But this is limited to second order system only.
标签: controller developed software control
上传时间: 2017-07-25
上传用户:aysyzxzm
使用MATLAB对DSB-AM进行仿真:双边带幅度调制的过程以及对其中所包含的对信号的频谱分析都可以通过MATLAB中的M语句及相关函数来实现。假如信号m(t)=cos(m)以dsb-am方式调制载波c(t)=cos(20*pi*t),所的信号为y(t),并将采样频率定为 fs=100Hz,则可在MATLAB中设计程序对该幅度调制的结果进行仿真,绘制已调信号波形和频谱分析。
上传时间: 2013-12-30
上传用户:JIUSHICHEN
hurst parameter: 給入一序列的資類,程式會畫出husrt 參數的figure和估計值 例 hurst_expo(sin(0:0.01:5*pi))
上传时间: 2014-12-03
上传用户:moerwang
Java 数值计算库 数列求和算法、求解方程的根、插值法和近似法、 数值积分、求解微分方程、矩阵运算及其它一些有趣的东西, 比如:大数、素数算法、PI、分形等等
上传时间: 2013-12-04
上传用户:yulg
1.河内之塔........................................................................................................................................ 4 2.Algorithm Gossip: 费式数列........................................................................................................ 5 3. 巴斯卡三角形.............................................................................................................................. 6 4.Algorithm Gossip: 三色棋............................................................................................................ 7 5.Algorithm Gossip: 老鼠走迷官(一)........................................................................................ 9 6.Algorithm Gossip: 老鼠走迷官(二)...................................................................................... 11 7.Algorithm Gossip: 骑士走棋盘.................................................................................................. 13 8.Algorithm Gossip: 八皇后.......................................................................................................... 16 9.Algorithm Gossip: 八枚银币...................................................................................................... 18 10.Algorithm Gossip: 生命游戏.................................................................................................... 20 11.Algorithm Gossip: 字串核对.................................................................................................... 23 12.Algorithm Gossip: 双色、三色河内塔.................................................................................... 25 13.Algorithm Gossip: 背包问题(Knapsack Problem)............................................................. 29 14.Algorithm Gossip: 蒙地卡罗法求PI...................................................................................... 34 15.Algorithm Gossip: Eratosthenes 筛选求质数............................................................................36 16.Algorithm Gossip: 超长整数运算(大数运算)....................................................................37 17.Algorithm Gossip: 长PI...........................................................................................................39 18.Algorithm Gossip: 最大公因数、最小公倍数、因式分解....................................................43 19.Algorithm Gossip: 完美数........................................................................................................ 46 20.Algorithm Gossip: 阿姆斯壮数................................................................................................ 49 21.Algorithm Gossip: 最大访客数................................................................................................ 50 22.Algorithm Gossip: 中序式转后序式(前序式)....................................................................52 23.Algorithm Gossip: 后序式的运算............................................................................................ 56 24.Algorithm Gossip: 洗扑克牌(乱数排列)............................................................................58 25.Algorithm Gossip: Craps 赌博游戏...........................................................................................60 26.Algorithm Gossip: 约瑟夫问题(Josephus Problem)...........................................................62 27.Algorithm
标签: C语言算法经典
上传时间: 2015-04-30
上传用户:cascas
Use the fast Fourier transform function fft to analyse following signal. Plot the original signal, and the magnitude of its spectrum linearly and logarithmically. Apply Hamming window to reduce the leakage. . The hamming window can be coded in Matlab as for n=1:N hamming(n)=0.54+0.46*cos((2*n-N+1)*pi/N); end; where N is the data length in the FFT.
标签: matlab fft
上传时间: 2015-11-23
上传用户:石灰岩123
随着PCB设计复杂度的逐步提高,对于信号完整性的分析除了反射,串扰以及EMI之外,稳定可靠的电源供应也成为设计者们重点研究的方向之一。尤其当开关器件数目不断增加,核心电压不断减小的时候,电源的波动往往会给系统带来致命的影响,于是人们提出了新的名词:电源完整性,简称PI(power integrity)。其实,PI和SI是紧密联系在一起的,只是以往的EDA仿真工具在进行信号完整性分析时,一般都是简单地假设电源绝对处于稳定状态,但随着系统设计对仿真精度的要求不断提高,这种假设显然是越来越不能被接受的,于是PI的研究分析也应运而生。从广义上说,PI是属于SI研究范畴之内的,而新一代的信号完整性仿真必须建立在可靠的电源完整性基础之上。虽然电源完整性主要是讨论电源供给的稳定性问题,但由于地在实际系统中总是和电源密不可分,通常把如何减少地平面的噪声也作为电源完整性中的一部分进行讨论。
标签: 开关电源 PCB设计
上传时间: 2015-12-25
上传用户:ccyh
建立了一个用于求解sigma的核函数矩阵,全部的测试数据点为一行数据,This matrix should be positive definite if the kernel function
标签: 核函数
上传时间: 2016-04-01
上传用户:guokai626
本程序用于完成BPSK、QPSK、pi/4QPSK、OQPSK、8PSK、16QAM、32QAM、64QAM和128QAM的调制仿真。并可任意扩展到MPSK和MQAM。程序分成四个部分,fir.m对基带码元序列进行脉冲成型,可选矩形脉冲,升余弦脉冲和平方根升余弦脉冲; modal.m 为主程序,完成岁各种信号的基带星座图映射、脉冲成型和调制;pi4QPSK.m 为pi/4QPSK信号的星座图映射程序;test1.m给出一个简单的频谱显示测试
上传时间: 2016-05-03
上传用户:ylqylq