Function Reference

zero

Transmission zeros of LTI models

Syntax

• z = zero(sys)
  [z,gain] = zero(sys)
  

Description

zero computes the zeros of SISO systems and the transmission zeros of MIMO systems. For a MIMO system with matrices , the transmission zeros are the complex values for which the normal rank of

drops.

z = zero(sys) returns the (transmission) zeros of the LTI model sys as a column vector.

[z,gain] = zero(sys) also returns the gain (in the zero-pole-gain sense) if sys is a SISO system.

Algorithm

The transmission zeros are computed using the algorithm in [1].

See Also
pole        Compute the poles of an LTI model

pzmap       Compute the pole-zero map

References

[1] Emami-Naeini, A. and P. Van Dooren, "Computation of Zeros of Linear Multivariable Systems," Automatica, 18 (1982), pp. 415-430.

totaldelay

zgrid