On Tue, 25 Dec 2007 15:24:54 -0600, Tim Wescott wrote:
I should also mention that there is an uncertainty in the mapping of
eigenvalues back from the z domain to the s domain. The magnitude of the
z-domain eigenvalue maps unambiguously to the s domain, but the polar
angle of the eigenvalue in the z domain maps to an infinite number of
eigenvalues spaced at 2 * pi * sampling frequency apart in the imaginary
direction in the s domain.
So you can take a system description in the z domain and come up with _a_
continuous-time system, maybe, but you can't come up with _the_
continuous-time system without some further constraints on the
Control systems and communications consulting
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