Hi Sanjay,
Thank you for posting your question.
I think your design looks good, so I implement integrater like your design, and it looks work well.
I will attach some candidates, please check them.
Option 1:
You can use "Discrete-Time integrator" block, this block also generate HDL.
I consider this way is simplest.
Option 2:
I implemented like your design, it looks work well.
Option 3:
you can use Simpson's low to implement integral like that.
https://en.wikipedia.org/wiki/Simpson%27s_rule
Anyway, they looks good precision.
If you have to use fixed point, you can use fixed-point designer to adjast value range.
Best regard,
Daichi
