文献[14]通过将采样中的Delta-Sigma调制器引入逆变器调制策略,提出一种特殊的程控PWM技术,即Delta-Sigma调制(Delta- Sigma Modulation, DSM)技术,可在无需确定随机过程统计特性和复杂谐波理论分析的基础上,借助DSM过采样特性来提高基带内信噪比,减少系统噪声。 区别于PWM技术,DSM本质上是一种模拟电路和数字电路相混合...
Delta-Sigma Modulation的意思就是对于想要调节的电压(或者水), 判断是否满足要求 (Yes or No), 然后加一点水或者不加, 直到下次判断. 这样就可以统计计数 这里Ibit是是Drain 电流, 也就是漏电流, Icup是每次加的电流. 当比较器输出为low时, 加Icup 记N是总共Clock的周期数, M是比较器为高的次数, 即在N...
Delta‐Sigma Modulation (DSMHysteretic controlReference amplitudeSynchronous DSMDelta modulation was actively developed for communication purposes in the sixties and seventies. It has also had applications in consumer audio equipment, industrial electronics devices, and precision measurement devices (see Jarman...
Y(z)=-L_1(z)V(z)\\ \text{then}~~ NTF_k(z)=\frac{1}{1+kL_1(z)}\\ \text{thus}~~ NTF_k(z)=\frac{NTF_1(z)}{k+(1-k)NTF_1(z)}\\已知根据仿真,当输入幅度小于-12 dBFS时,k约为0.75,则 NTF_{k=0.75}(z)=\frac{(1-z^{-1})^2}{1-0.5z^{-1}+0.25z^{-2}}\\...
DELTA-SIGMAMODULATIONDELTA-SIGMAMODULATIONDELTA-SIGMAMODULATIONDELTA-SIGMAMODULATION ACHIEVEMENTS:introductiontoanimportantvariationofthebasicdelta modulator(asusedincompactdiscplayers). PREREQUISITES:completionoftheexperimentsentitledDeltamodulationand DeltademodulationinthisVolume. ADVANCEDMODULES:DELTAMODULATIONUTILITIES,DELT...
必应词典为您提供delta-sigmamodulation的释义,网络释义: 调制;三角积分调变;调制器;
Sigma-Delta modulation 简介 1 ∑△ADC结构 过采样 噪声整形 抽取滤波 ∑ + x(t) C/D x[n] 1 1− z−1 量化器 y(n) LPF wC = π / M - x'(t) T z −1 ↓M xd[n] 2 模数转换 模拟信号 x(t) 采样频率 Fs=1/Ts 采样 xs(nTs) 量化 数字信号 y(n) A/...
• 13.3.3 Delta Modulation(增量调制) The coder is completely characterized by the sampling frequency, the quantizing step size to resolve the prediction error or delta of the loop, and the reconstruction filter. x (t ) xl ( n ) xl ( t ) 原信号 x ( t ) 重建信号 xl ( t ...
sigma-delta调制原理.pdf,Sigma-Delta modulation 简介 1 ∑△ADC结构 过采样 噪声整形 抽取滤波 + 1 y (n ) LPF x (t ) C/D x[n ] ∑ 1−z −1 量化器 wC π/ M ↓M xd [n ] - x (t ) T −1 z 2 模数转换 采样频率 Fs =1/ Ts 模拟信号 数字信号 x (t
Our isolation amplifier improves the dependence of the primary side current consumption on the input voltage by introducing our original digital modulation and demodulation technology, thereby contributing to lower power consumption and stabilization of the primary side pow...