Zero-order hold (ZOH). The hypothetical LTI device to model the fact that Digital-to-Analog converters do not output a series of dirac impulses, but output a series of piecewise-constant pulses, as wide as the sampling period.
Questions tagged [zoh]
4 questions
17
votes
3 answers
Exactly what is the role of the zero-order hold in a hybrid analog/digital sampled-data system?
I'll admit, I am asking this question rhetorically. I am curious what answers will come back out of this.
If you choose to answer this, make sure you understand the Shannon-Nyquist sampling theorem well. Particularly reconstruction. Also be…
robert bristow-johnson
- 1,645
- 1
- 12
- 29
2
votes
2 answers
Zero-order hold discretization?
I have some difficulties understanding something. There are several discretization methods, such as zero-order-hold (ZOH), forward euler, backward euler, tustin, et cetera.
Forward euler, backward euler, et cetera discretization methods approximate…
WG-
- 161
- 1
- 1
- 4
1
vote
1 answer
Output of block diagram in Z-Domain ob block diagram
I want to calculate Y(Z)[Z-Domain] for the given system with matlab. See picture of the block diagram
I have tried to solve it with matlab. I have written the following matlab code.
clear all
clc
s = tf('s');
% model Gp(s)
Gp = 2/s;
H = s;
%…
Jasmin Niederbacher
- 11
- 1
0
votes
1 answer
Discretization Using ZOH, FOH and Tustis bilinear Transformation
I am very new to this forum, so excuse me if i do not write the equations properly. And I'm pretty new to DSP too, so this might be very basics for most of you, but it's pretty complicated to me.
I need to discretize a PT1…
EpicUser
- 1
- 4