*Can anybody help me in defining the transfer function(s, z) of a DC motor?*

> I'm not referreing to a general FT(available in control books) but a the FT

> of a real motor I have.

>

>

> I'm not referreing to a general FT(available in control books) but a the FT

> of a real motor I have.

>

>

in S notation X = 1

---- ----------------

Y 1 + ST

Z transform is ! + e^-aT

--------------

a(z - e^-aT)

T is Time constant of Motor (67% rise time with step input)

V = Volts

K proportionality constant

Rgds

Hugh