Ok after thinking about it more, the interpolate is expecting that the incoming sin/cos signals a,a* are actual inverse values. however this encoder is single ended, it just has a and b signals. the a* and b* signals are a sort of reference voltage and never change. I'll experiment with it some more tomorrow....
On Sun, Sep 19, 2021, 12:55 AM Curtis Dutton <[email protected]> wrote: > It is an incremental. Magnetic sensor. Gear tooth with I think 256 teeth. > One sin/cos cycle per tooth. > > On Sat, Sep 18, 2021, 10:56 PM Ralph Stirling < > [email protected]> wrote: > >> A lot of very high resolution, and older encoders have >> sine wave gratings, which give sine and cosine waveforms >> on the A and B channels. These are connected to an >> interpolator box that contains A/D converters and logic >> to generate quadrature pulses. The higher the interpolation >> ratio, the lower the max velocity allowed. >> >> -- Ralph >> ________________________________________ >> From: Gene Heskett [[email protected]] >> Sent: Saturday, September 18, 2021 5:22 PM >> To: [email protected] >> Subject: Re: [Emc-users] Heidenhain IBV 610 troubles >> >> I don't think you have an encoder, but a resolver. If you are getting one >> sinesoid per full turn, its a resolver. >> >> > Anyhow it doesn't work and I'm not sure how to troubleshoot the black >> > box. I have the manuals and I have tried various combinations of the >> > dip swithches inside. >> > >> > does anyone have any troubleshooting tips or stories about their use >> > of an interpolater box? >> > >> > >> > Thanks, >> > Curt >> > >> > _______________________________________________ >> > Emc-users mailing list >> > [email protected] >> > >> https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7Cralph.stirling%40wallawalla.edu%7C5a5b014bf3fc4481176208d97b03a93b%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C1%7C637676077932698528%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=sowEIC7aWNESysLAlCjxOMk84Inwx9pFjz4IRVk6vIo%3D&reserved=0 >> >> >> Cheers, Gene Heskett >> -- >> "There are four boxes to be used in defense of liberty: >> soap, ballot, jury, and ammo. Please use in that order." >> -Ed Howdershelt (Author) >> If we desire respect for the law, we must first make the law respectable. >> - Louis D. Brandeis >> Genes Web page < >> https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fgeneslinuxbox.net%3A6309%2Fgene&data=04%7C01%7Cralph.stirling%40wallawalla.edu%7C5a5b014bf3fc4481176208d97b03a93b%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C1%7C637676077932698528%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=HxeTFPS47gukrRBopVJJ939Wg4sEwHPPRremv092Uy0%3D&reserved=0 >> > >> >> >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
