Hi,
I'm trying to make a fairly general purpose sensing front-end for a
motor control system, and I'm wondering what I should have available on
it.  It is supposed to be pretty general.  I'd like it if I could use
the same front-end on AC, DC-brushed, DC-brushless, synchronous, etc..
I realize that the amplifiers would need to be different, but maybe
those could be external modules or something similar.

So far, I have:
A 6-channel simultaneous sampling ADC with differential inputs
A Resolver to Digital Converter
A sine/cosine position decoder

The 6-channel ADC was chosen for 3-phase motor control (one current, one
voltage sample per phase) but would be useful for other applications
too, I expect.
On the ADC, I know I should have isolation amps for the current and huge
attenuation for the voltage.

The resolver and sine/cosine position decoder for speed/position control

Is there anything else that I have missing here?  Or that would be
useful for some variety of motor control sensing?

Thanks,
Brendan

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics