Generating Triangular wave in simulink

2012 10 7
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更新时间：2018 5 3
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I have sine wave bx is simulink,is there any box for triangular wave available,else please tell how to generate triangular wave in simulink of equal amplitude and time

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Azzi Abdelmalek
Azzi Abdelmalek 2012-10-8

0 个投票

generate your signal in matlab command then use a from workspace block with variable name ty
ts=0.1;
t=-3:ts:3
y=repmat(max(t)-abs(t),1,10)
t=-3:ts:-3+length(y)*ts-ts
ty=[t' y']

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kash
kash 2012-10-8
Thanks Azzi ,in that i get a amplitude of 2.5 and time is 6 can u please tell how to adjust the amplitude ans time to 2 please
Azzi Abdelmalek
Azzi Abdelmalek 2012-10-8
编辑：Azzi Abdelmalek 2012-10-8
ts=0.1;tim=2
t=-tim:ts:tim
y=repmat(max(t)-abs(t),1,10)
t=-tim:ts:-tim+length(y)*ts-ts
ty=[t' y']
Azzi Abdelmalek
Azzi Abdelmalek 2012-10-8
编辑：Azzi Abdelmalek 2012-10-8
if you want insert zeros between triangles
ts=0.1;tim=2;perc=0.5 %perc >0
t=-tim:ts:tim
y=repmat([max(t)-abs(t) zeros(1,ceil(length(t)*perc))],1,10)
t=-tim:ts:-tim+length(y)*ts-ts
plot(t,y)
ty=[t' y']
kash
kash 2012-10-8
thanks Azzi final question can we use repeating sequence block as a triangular wave
JohnLio
JohnLio 2013-12-6
Azzi Abdelmalek: i didn't get how you did that, can you please elaborate a bit how to and which block i have to use in matlab, and where to put these code, newbie in matlab :|

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更多回答（3 个）

Julien
Julien 2012-10-7
编辑：Julien 2012-10-7

0 个投票

Hi, the triangle generator does not exist but you can create your own.
My tip is to create a pulse signal (pulse width =50%) and adding a negative offset (typically the half of the amplitude you want).
If you want a triangle signal between [0 1] then you have to set:
pulse amplitude : 4 offset : -2
Then you have a pulse varying between [-2 2] You just have to integrate this signal and you will get a nice triangle signal varying between [0 1] ;)

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kash
kash 2012-10-8
Thanks Julien as i am new to simulink can u please tell how to create a pulse signal (pulse width =50%) and adding a negative offset (typically the half of the amplitude).
kash
kash 2012-10-8
Julien can u please model
Julien
Julien 2012-10-8
Contact me in my personal address then I'll can send you the file
Sara
Sara 2013-5-7
how can i get a triangular wave varying from -ve value to a +ve value??

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Julien
Julien 2012-10-8

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kash
kash 2012-10-9
Thanks a lot julien but can u tel how u got this block plz
Azzi Abdelmalek
Azzi Abdelmalek 2012-10-9
right click on the model then click 'look under mask'
kash
kash 2012-10-9
ok Azzi thanks can u tell how to generate a multicarrier Input with 5 triangular wave and a sivewave over it
kash
kash 2012-10-9
in the link
http://www.mathworks.in/company/newsletters/digest/july04/images/ln_figure8_wl.jpg
is triangle block in that image is same as a triangle block given bt Julien
kash
kash 2012-10-9
ok Azzi i did as per it but not getting 5 triangular wave on each axes and a sine wave over it
kash
kash 2012-10-9
i have given image for 15 level ,same as it like i need for 7 level
plz help
http://imgur.com/5ldev
Azzi Abdelmalek
Azzi Abdelmalek 2012-10-9
I did'nt understand. You still have problem with generating triangular wave?
kash
kash 2012-10-9
not in triangular wave i added 5 triangular and a sine wave to get the desired output as above ,but not getting the answer
Azzi Abdelmalek
Azzi Abdelmalek 2012-10-9
If you have another problem, I suggest to post another question

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