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Sliding window integrator in matlab code

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NTR
NTR 2011-11-14
Hi, I want to implement sliding window integration using matlab code. I know its easy to implement in simulink(its taking large time due to large computation data). but i need this in matlab code. Can any one please provide hints how can i proceed. I have signal with pulse period of 5seconds and my signal is high from 2 to 3 sec.I want to integrate signal only during this period 2 to 3sec.
thank you. NTR

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回答（1 个）

Fangjun Jiang
Fangjun Jiang 2011-11-14
The key function is conv().
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NTR
NTR 2011-11-15
Hi Jiang Thank you are your valuable support. I am doing this by multiplying input with square wave. but I have one question
When we multiply two signal the result will also have unwanted inter modulation products(like mixer).I mean unwanted frequency components.Do you have any comment how these will affect our integrator result.
Fangjun Jiang
Fangjun Jiang 2011-11-15
I don't understand what you are talking about. If signal=rand(6,1), selection=[0 0 1 1 0 0], then r=selection*signal is the same as above, the sum of the value at t==2 and t==3.

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