Adaptive Filtered Closed Loop Output Error Method

This method has been developed in order to identify without bias "plant + disturbance" models corresponding to closed loop output error structure . It improves the Filtered Closed Loop Output Error method, in the sense that the estimation of the closed loop characteristic polynomial which is used to filter the regressor vector is updated at each sampling instant.

f_f(t)=S/P(t-1) f(t)

P(t-1) = A(q^-1,t-1)S(q^-1)+B(q^-1,t-1)R(q^-1)

where A(q^-1,t-1) and B(q^-1,t-1) are respectively the denominator and numerator of the plant model based on the estimated parameters upto t-1.

See: Closed loop identification module .

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(file afcloe.htm)