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- %SSMODEL In case of a userwritten model structure definition, this
- % should have the format
- %
- % [A,B,C,D,K,X0] = username(PARAMETERS,T,AUX)
- %
- % i.e. for any values of the parameters the program
- % returns the discrete time state space matrices.
- %
- % AUX is a matrix of auxiliary parameters to be
- % used to manipulating the model structure without
- % having to rewrite 'username'.
- % T is the sampling interval.
- % For an underlying continuous-time parametrization the
- % conversion to discrete-time should be inhibited if T<0.
- % That is, "if T>0, [a,b]=c2d(a,b,T);end" should be used
- % in 'username'. (c2d here is a function that transforms from
- % continuous to discrete time.) This feature is utilized in
- % PRESENT, TH2SS, TH2FF, TH2ZP and several other routines.
-