Control for stabilizing the alignment position of the rotor of a

Details Control for stabilizing the alignment position of the rotor of a Control for stabilizing the alignment position of the rotor of a

1985-03-12

1988-03-15

Smith, Jr., David

Electricity: motive power systems

Synchronous motor systems

Antihunting or damping

318314, H02P 540

Patent

active

047315717

ABSTRACT:
A method and apparatus for damping oscillations in the rotor load angle of a synchronous motor to provide stable rotational alignment in high precision applications. The damping method includes sensing the angular position of the rotor and utilizing the position signal to generate an error signal in response to changes in the period of rotation of the rotor. The error signal is coupled to phase shift amplifiers which shift the phase of the motor drive signal in a direction to damp out the oscillations in the rotor load angle.

REFERENCES:
patent: 3268788 (1966-08-01), Branco
patent: 3659169 (1972-04-01), Waddicor
patent: 3829747 (1974-08-01), Woolfson et al.
patent: 4078192 (1978-03-01), Fultz
patent: 4143311 (1979-03-01), Lee
patent: 4298832 (1981-11-01), Acker et al.
patent: 4339703 (1982-07-01), Rolff et al.
patent: 4480215 (1984-10-01), Bax

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