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34 total contributions since 2011

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Question


MATLAB SISOTool plot options
Hi, Is anyone familiar with plotting in the Matlab SISOtool? For some reason, I cannot access the plot options to change th...

7 years ago | 0 answers | 0

0

answers

Question


customizing line thickness for non-plot function graphs
Hi, I'm using the SISOtool control systems design toolbox and want to find a way to get thicker lines for my graphs. In par...

7 years ago | 0 answers | 0

0

answers

Question


besselj and transfer functions?
Hi, I want to use the function call besselj(nu,Z) with Z is some transfer function. I get an error which says that the inpu...

8 years ago | 1 answer | 0

1

answer

Question


vector to sys transformation for bode plot
Hi, As background, I am trying to use the bode() function. I know that you can extract vectors from a bode(sys) by doin...

8 years ago | 1 answer | 0

1

answer

Question


bode plot discrepancy
i am plotting some bode plots, and i found the following discrepancy, and I'm not quite sure what is the root cause of it. My c...

8 years ago | 2 answers | 0

2

answers

Question


square root of a transfer function
Hi, I am trying to find the magnitude of my system 'sys', so i know i have to take the square root of a transfer function in...

8 years ago | 0 answers | 0

0

answers

Question


bode plot overflow?
Hi , Im trying to plot a bode plot but i get the following error. >> bode(gamma20,{1000,1e6}) Warning: The data can...

8 years ago | 1 answer | 0

1

answer

Answered
bessel functions
I have solved this issue. I should have started the iterations at 0 instead of 1. Thread closed. Thanks

8 years ago | 0

| accepted

Answered
bessel functions
I want to also add that i tried to use the doc besselj and then formula that was presented there. However, I still d...

8 years ago | 0

Question


bessel functions
Hi, I am trying to write a code to calculate the bessel functions of the first kind. The equation is given here: http://en....

8 years ago | 4 answers | 0

4

answers

Question


extracting values from bode()
Hi, I know that you can do the following to get the magnitude phase and w from using the bode() call (which requires transfe...

8 years ago | 1 answer | 0

1

answer

Answered
bode() magnitude
SOrry as another question, I noticed that when you do [mag, phase, wout] = bode(a) it draws only about 45 points. Is ...

8 years ago | 0

Answered
bode() magnitude
i think i found out the problem. wout must be divided by 2pi to get the correct plot.

8 years ago | 0

Answered
bode() magnitude
hey thanks for your answer. i have a followup question. what i did after. so i have [mag,phase,wout] = bode(sys); m...

8 years ago | 0

Question


bode() magnitude
Hi, I Have seen the code [ mag,phase] = bode(sy s) but when i try to see the values of mag, or phase, it returns somethi...

8 years ago | 5 answers | 0

5

answers

Question


plotting the frequency spectrum
Hi, I am having trouble plotting the frequency spectrum of a sine wave. For this code, i expect the main frequency component...

8 years ago | 6 answers | 0

6

answers

Question


sine wave plot
Hi, I am having some trouble plotting a sine wave and i'm not sure where i am going wrong. i have t = [0:0.1:2*pi] ...

8 years ago | 7 answers | 2

7

answers

Question


writing transfer functions in matlab
Hi, I want to write a transfer function in matlab. I know we usually write in the following way trans = tf([1 0 0], [1 0 1...

8 years ago | 3 answers | 0

3

answers

Question


transfer function multiplication and plotting
hi have some code that looks like TF = tf(num,den,1/(60)); g1 = 10*TF; f = iztrans(g1) but when i do this, matlab ...

9 years ago | 1 answer | 0

1

answer

Answered
multiple bode plots on same graph
unfortunately it is not that simple. my code looks more like g = tf([1 0.1 7.5],[1 0.12 9 0 0]); bode(g) hold on semilo...

9 years ago | 1

Question


multiple bode plots on same graph
Hi, Does anyone know how to plot multiple bode plots using the "bode" function? I know that the easiest way to do this woul...

9 years ago | 5 answers | 0

5

answers

Question


noisy bode plot data
Hi, i have some pretty noisy bode plot data that i would like to do a curve fitting on. Does anyone know if matlab has some...

9 years ago | 1 answer | 0

1

answer

Question


curve fitting in the frequency domain
hi, i am looking to get some frequency response data, in the form of a bode plot. When i obtain this data, i would like to ...

9 years ago | 0 answers | 0

0

answers

Question


unwrapping the phase in SISO designer
Hi, im using the siso design tool. does anybody know how i can unwrap my phase plot? on a normal bode plot figure, i can j...

9 years ago | 1 answer | 0

1

answer

Question


normalise a transfer function
Hi, I have an eighth order s-domain transfer function. Is there a way i can normalise this equation in matlab with respect ...

9 years ago | 0 answers | 0

0

answers

Question


rltool SISO design tool
Hi, i am using the SISO design tool (matlab function rltool) to design a compensator. in my frequency response, i have a re...

9 years ago | 1 answer | 0

1

answer

Question


Unobtainable bode plot ?
Hi, I am using the bode( and margin( functions. (both are used to make Bode plots) The issue I am having is with getting...

9 years ago | 1 answer | 0

1

answer

Question


cubic equations
Hi all, I was wondering if matlab had a function that can decompose my cubic function into something simpler. My preference ...

9 years ago | 1 answer | 0

1

answer

Answered
Matlab compilation inconsistancies
no they do not have the same processor. but doesn't that seem very strange? it would be highly improbable for different people ...

9 years ago | 0

Question


Matlab compilation inconsistancies
Hi, im having a strange problem where if i run my matlab script on my home computer, it seems to work fine, but if run on a diff...

9 years ago | 2 answers | 0

2

answers

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