Discreate Integration in HDL coder for FPGA

Hello Dear all, I working on FPGA based controller which uses MATLAB/HDL blocks only. I want to make a integrator and applied many logic for same but unfortunately i did not get proper output. could you suggest some alternative for Integrator. I need proper output. Although it is working in simulation fine. Tfpga=50ns

Answer 1

[Daichi]

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