Control diagrams

[From Rupert Young (2014.06.09 15.30)]

Digging through archives of my files from university I found the
attached, which seems relevant to a recent discussion on control theory.

I may have put it together but have no recollection of doing so. Does
anyone recognise the diagrams? The only info I have are the names of
each individual drawing:

mct_standard.eps

mct_general.eps
mct_motor.eps

mct_eye.eps
pct_eye.eps

If anyone wants to add explanations to them feel free.

mctpct.pdf (6.24 KB)

ยทยทยท

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Regards,
Rupert