تشخیص خطا در ماشین های القایی با استفاده از مقدار منفرد ساختار کلی

A model-based approach for off-line fault diagnosis in induction machines is presented. The class of faults to be diagnosed is restricted to broken rotor bars, asymmetry in the rotor cage and asymmetry in the stator, arising due to an inter-turn fault resulting in an opening or shorting of one or more circuits of stator phase windings. The method is based on model invalidation tools and -framework models. The experimental model consists of a nominal model estimated by means of a subspace identification algorithm, together with linear fractional norm-bounded perturbations and norm-bounded unknown inputs.