Method and apparatus for correcting hysteresis synchronous motor

Details Method and apparatus for correcting hysteresis synchronous motor Method and apparatus for correcting hysteresis synchronous motor

1992-03-02

1993-08-10

Shoop, Jr., William M.

Electricity: motive power systems

Synchronous motor systems

Hysteresis or reluctance motor systems

318723, 2191216, 388812, 359484, H02D 516

Patent

active

052352633

ABSTRACT:
A method and apparatus for accurately controlling a hysteresis synchronous motor velocity eliminate low frequency hunting, which is characteristic of the motor. A nominal input phase current is modified by providing feedback information, thereby enabling a microprocessor control system to modify the phase of quadrature input current signal to the motor and thereby eliminating hunting of the motor. Accordingly, in a high resolution scanning application, speed variations which could cause disturbing artifacts to appear in an output image are eliminated. Velocity control, better than 15 parts per million, can be achieved

REFERENCES:
patent: 3562615 (1971-02-01), Nasu et al.
patent: 3985952 (1976-10-01), Alder
patent: 4112367 (1978-09-01), Hepner et al.
patent: 4532402 (1985-07-01), Overbeck
patent: 4710691 (1987-12-01), Bergstrom et al.

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