sffis - Fuzzy inference S-function for Simulink software
Syntax
output = sffis(t,x,u,flag,fismat)
Description
In most cases, the Fuzzy Logic Controller block generates a
custom block diagram for your FIS. The Fuzzy Wizard, however, cannot
handle FIS with custom membership functions or with AND, OR, IMP,
and AGG functions outside of the following list:
orMethod:max
andMethod: min,prod
impMethod: min,prod
aggMethod: max
In these cases, the Fuzzy Logic Controller block uses the S-function sffis to
simulate the FIS. For more discussion of this topic, see Building Your Own Fuzzy Simulink Models.
The MEX-file sffis is used by Simulink to
undertake the calculation normally performed by evalfis.
It has been optimized to work in the Simulink environment. sffis builds
a data structure in memory during the initialization phase of a Simulink simulation,
which it then continues to use until the simulation is complete.
The arguments t, x, and flag are
standard Simulink S-function arguments (see Writing
S-Functions in the Simulink documentation). The argument u is
the input to the MATLAB workspace FIS structure, fismat.
If, for example, there are two inputs to fismat,
then u is a two-element vector.
See Also
evalfis, fuzblock
 | setfis | | showfis |  |
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