control.linfnorm
- control.linfnorm(sys, tol=1e-10)[source]
L-infinity norm of a linear system.
- Parameters
- sys
StateSpaceorTransferFunction System to evaluate L-infinity norm of.
- tolreal scalar
Tolerance on norm estimate.
- sys
- Returns
- gpeaknon-negative scalar
L-infinity norm.
- fpeaknon-negative scalar
Frequency, in rad/s, at which gpeak occurs.
See also
slycot.ab13dd
Notes
For stable systems, the L-infinity and H-infinity norms are equal; for unstable systems, the H-infinity norm is infinite, while the L-infinity norm is finite if the system has no poles on the imaginary axis.