Path: Common/Control
% Creates a second order transfer function.
Creates a second order transfer function to produce
a large + or - gain at frequency wc.
s^2/wc^2 + 2 zzs/wc + 1
K(s) = ------------------------
s^2/wc^2 + 2 zps/wc + 1
For a bandpass with infinite gain at wc enter inf for Kdb. For a
notch with zero gain at wc enter NaN. Any argument for fType
will make the filter nonminimum phase.
Implement this as
x[k] = ax[k-1] + bu[k]
u[k] = cx[k] + du[k]
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Form:
[a, b, c, d] = Notch( Kdb, wc, dw, fType, tSamp, sType )
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Inputs
------
Kdb Peak gain (db)
wc Notch frequency (rad/sec)
dw Half notch width (rad/sec)
fType 'nmp' means nonminimum phase notch, 'mp'
is minimum phase
tSamp Sampling frequency
sType State equation type ('Delta' or 'Z')
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Outputs
-------
a Plant matrix
b Input matrix
c Measurement matrix
d Feedthrough matrix
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References: Wie, B., K. Byun, "New Generalized Structural Filtering
Concept for Active Vibration Control Synthesis,"
J. Guidance and Control, Vol. 12, No. 2, March-April 1989,
pp. 147-154.
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Common: Control/C2DZOH Common: Control/C2DelZOH Common: Control/FResp Common: Control/ND2SS
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