Re: good motion control book?

Hello Robin

Thanks for your reply.

However, can you tell me where I can find resources describing the
practical application of these concepts?


Best regards

Bill



--- In CAD_CAM_EDM_DRO@yahoogroups.com, Robin Szemeti <list@r...>
wrote:

> On Friday 30 January 2004 18:22, Alan Marconett KM6VV wrote:
> > Acceleration/deceleration is simply a ramp, based on steps/sec

wanted.

> > An S-curved acceleration contour can also be implemented, but

doesn't

> > seem to be necessary.
>
> You are correct, for basic motion control linear accelertaion

profiles are

> OK. You can load your programs off punch tape too if you like :)
>
> In modern, commercial controls, S curve accel profiles (ie d2v/dt2

kept

> within finite limits) are one key feature that allows designers to

extract

> increased performance from their hardware. Some systems refer to it

as 'jerk

> limiting' .. either way, its one of the features that allows

designers to get

> more bang from their buck. If you ve never seen the difference in

performance

> that a modern control can make to cheap hardware ... its stunning.
>
> Sure software cant make bad hardware good, but it can make OK

hardware great

> :)
>
> --
> Redpoint Consulting Limited
>
> Real Solutions for a Virtual World
> http://www.redpoint.org.uk