How to generate Sine or Ramp reference in Embedded Applications?

3 visualizaciones (últimos 30 días)
Mike Buba
Mike Buba el 31 de Mayo de 2020
Hi,
Do you have any idea or suggestions or experience on how to generate a Sine or Ramp reference in Embedded Applications (e.g. C2000 Processors)?
First, I tried to use 'Sine wave' blocks but was told they will generate code that is not optimised for embedded applications.
Now, I am using 'C2000 Ramp Generator' block to generate ramp reference (0 .. 2) at 50 Hz and from there using '_IQsin' from 'C2000 Trig Fcn IQN' get sine waveform; and eventually using dq0/abc transformation get all three phases. See figure and attachment (R2015a).
I can replicate the example in the Help File to get 1.9531 Hz and the closest I can get is 49.937 Hz with Sample Time = 0.00002 and Scaling 2^-29. Can I get 50 Hz or 60 Hz exactly? I have some resonant filters tuned to that frequency later in the code. Block '_IQsin' gives sine output, but 'C2000 Inverse Park Transformation', does not work - not a big problem now as I plan to implement my dq0/abc transformation block.
Is this the most optimal way or are there any better, more optimised ways of generating sine reference in Embedded Applications?
Thanks

Respuestas (0)

Productos


Versión

R2015a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by