In the follow screenshot why do we use this filter to our signal I ?
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Chunru on 26 May 2022
You have a discrete linear system. You could find the system transfer function by analysing the system. It turns out to be a first order IIR filter with one pole . With appropriate parameter Ts ( is a function of Ts), it can be a low pass IIR filter. This explain why your output is a smoothed out version of input.