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lti/exp

Create pure continuous-time delays

Syntax

d = exp(tau,s)

Description

d = exp(tau,s) creates pure continuous-time delays. The transfer function of a pure delay tau is:

       d(s) = exp(-tau*s)

You can specify this transfer function using exp.

s = zpk('s')
d = exp(-tau*s)

More generally, given a 2D array M,

s = zpk('s')
D = exp(-M*s)

creates an array D of pure delays where

D(i,j) = exp(–M(i,j)s).

All entries of M should be non negative for causality.

See Also

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Introduced in R2006a