Re: Re: That encoder stuff

I saw the same article. There has been several other articles on digital tachs published in IEEE and I need to go through my
back issues and find them.

That smarts could obviously be done by the same Microcontroller/DSP that generates the PWM.
Bertho
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> Ray Henry <rehenry@...> wrote:
>
> Sometime back I read a report on an pulse coder to tach converter that used
> the frequency of pulses for the high speed D/A conversion and the time
> between pulses for low speed D/A conversion. This system gave a resonably
> accurate velocity signal for both rapid moves and slow feedrates.
>
> Something like this could be developed even if you wanted to stay in
> digital for the entire velocity loop.
>
> Ray