Grpdelay function with plotting for a transfer function
3 views (last 30 days)
Show older comments
I am trying to find the grpdelay of a transfer function and plot it but am not sure how to use the function in MATLAB.
The transfer function I have is
H = tf([0.25 -0.1045 1],[1 -0.1045 0.25],0.1;
and this is what im trying to do.
0 Comments
Answers (1)
Harsh Parikh
on 7 Oct 2020
Hi,
sys_obj = tf(<Numerator_coefficients>,<Denominator_Coefficients>,Sample_time)
Thus, your first vector ([0.25 -0.1045 1]) is a vector of coefficients for the Numerator part and the second vector ([1 -0.1045 0.25]) will be a vector of coefficients for the denominator part.
'grpdelay()' function has the following prototype: (https://www.mathworks.com/help/signal/ref/grpdelay.html)
[Group_delay, angular_freq] = grpdelay(<Numerator_coefficients>, <Denominator_Coefficients>)
After having all this information, you can use the 'grpdelay()' as follows:
[gd,w] = grpdelay(First_vector, second_vector)
I got the following graph for the given input:
See Also
Categories
Find more on Digital Filter Analysis in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!