Method and apparatus for adjustment of the rotor angle of an...

Details Method and apparatus for adjustment of the rotor angle of an... Method and apparatus for adjustment of the rotor angle of an...

2006-10-17

2006-10-17

Salata, Jonathan (Department: 2837)

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific load support drive-means or its control

Includes control for power source of drive-means

C318S437000

Reexamination Certificate

active

07121385

ABSTRACT:
A method and an apparatus for adjustment of the rotor angle of an elevator motor (M), in which method: the rotor angle of the elevator motor is measured, the rotor angle is adjusted by using the measured rotor angle value as feedback data, and the rotor angle is measured by a pulse emitter (PE) or tachometer connected to the elevator motor. In the method, a disturbance signal (u) is fed into the rotor angle feedback data to produce a change (disturbance) in the rotor angle, the change (disturbance) is compared to the disturbance signal (u), and, on the basis of the comparison, a control signal is generated to adjust the rotor angle.

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Takano, A., IEEE Transactions on Industrial Electronics, IEEE Inc., vol. 43, No. 6, Dec. 1, 1996, pp. 640-646, XPOOO643572.

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