B. Robyns et al., A methodology to determine gains of induction motor flux observers based on a theoretical parameter sensitivity analysis, IEEE POW E, 15(6), 2000, pp. 983-995
A method to compute gains of induction machine flux observers, based on a t
heoretical sensitivity analysis taking the magnetic saturation into account
, with the aim to minimize the observer sensitivity to electrical parameter
uncertainties is proposed in this paper. It is shown for a reduced order o
bserver, that the sensitivity to parameter uncertainties maybe independent
of the reference frame, when a modification is introduced in the classical
determination of the slip frequency. It is also shown how to extend the pro
posed method to a full order observer. The theoretical study is completed b
y experiments on a 750 W induction machine (using DSP TMS320C31) which conf
irm the theoretical results.