| 摘要 |
PROBLEM TO BE SOLVED: To perform vector control of an induction motor which is stable even in high-speed range, when estimating the identical one-dimensional magnetic flux, observer is used which is discretely approximated. SOLUTION: A pole arrangement gain regulator 10 sets the value of a pole arrangement gain k to its maximum value, which satisfies the Formula 1 as the determination formula indicating the upper limit of the value of the pole arrangement gain of the magnetic flux observer 6 match is determined by the angular velocity estimate outputted from a velocity estimating mechanism 7 and the constant of the induction motor 4. |
