How can I know the appropriate conditions and parameters for a PRBS for a 12V permanent magnet DC motor in a digital system with sample period of 11ms? I want to know parameters like the amplitude of the PRBS, the number of shift registers bits and the number of periods of the PRBS for a good identification.
Jose A. Ramos
Renee:
What you need to keep in mind is that the PRBS must be persistently exciting and that all frequencies in the system bandwidth get excited. Look at the frequency content of your data and find out the bandwidth, then makes sure your PRBS design excites those frequencies. You will then have to tune the PRBS algorithm for amplitude and number of registers, which I'm not sure how to do.
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