Ian_Hurlock Posted May 3, 2003 Report Share Posted May 3, 2003 Hi TKI have been searching for encoders for use in mios.A questionWhat is/are the allowable PPR for these things.Can you spec me right up on these thingsThanksALSO ENCODER SUGGESTION I am looking at purchasing a quantity of encoders from China.I am trying to get a decent price at volume.It may be feasible to place a large order and reship from here while maintaining a good price. I don't mind attending to this. ;DPerhaps a large number could be despatched to a central point in Europe  or whatever for distribution.( If some one would like to put their hand up ) ;)This is just a gauge to see what sort of volumes are needed for a competetive price.I have contacted a couple of companies already with regard to this and await their reply.If any have interest/suggestions of any sort they can post here or at my mail address.( I know, Steve, you and LO are prob keen ) ;)Ian Quote Link to comment Share on other sites More sharing options...
TK. Posted May 4, 2003 Report Share Posted May 4, 2003 Hi Ian,I'm not sure about the max. PPR rate, it's hard to create an equation that estimates this value, as it depends on different parameters: rotation speed, axis size, pulse width... the only spec that I can give you is that MIOS is able to sample for transitions every microsecond (-> specified with MIOS_SRIO_UpdateFrqSet). However, from my experience rotary encoders which are specified with up to 36 PPR are working w/o problems. I haven't tested "faster" encoders yet. (Note the the resolution will be doubled by the driver to 72 PPR)to the encoder order: at least the prices would be interesting. :)Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
Ian_Hurlock Posted May 4, 2003 Author Report Share Posted May 4, 2003 Thanks TKSeems that 14 and 24 ppr are not uncommon. There are more opportunities for this product.I will see what my enquiries bring. I can see that, as far as mios is concerned, encoders are the way to go.They are prohibitive at present but we may be able to change that.Ian Quote Link to comment Share on other sites More sharing options...
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