In 1996-97 and 2006, M. Cipolla [8], J. Moreno, J.
Paracaula [9], and E. Sergaki, G. Stavrakakis [10]
respectively, introduced efficiency optimization during
transient states using fuzzy controllers in order to recover the
motor flux. In [8-10] the dynamic speed response is
deteriorated more or less due the delay to recover the
wanting flux.