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Inaccurate encoder signal using SCI

Hello ,

I am trying to read out data from eQEP module to Simulink Scope block using SCI. Currently I'm able to monitor the rotor angle of my incremental encoder, unfortunately this signal seems to be very inaccurate at higher speed (see attached scope window with counter output of eQEP, encoder rotating at 1500rpm). 

Can someone please tell me how to configure the eQEP-module in Simulink in order to obtain accurate data for rotor position and speed? 
My incremental encoder has 1024 lines and I use Matlab R2012B
Thanks in advance!

Pieter Gervoyse,
Master Student at the KU Leuven,
Belgium 
 
  • Hi Pieter,

    Can someone please tell me how to configure the eQEP-module in Simulink in order to obtain accurate data for rotor position and speed? 
    My incremental encoder has 1024 lines and I use Matlab R2012B

    Support for Simulink on this forum would be very limited. I would like you to check with Matlab C2000 forum for
    quick support.
    Regards,
    Gautam