Motor control servo system

Details Motor control servo system Motor control servo system

1990-11-29

1993-04-20

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

Frequency- or phase-modulated systems

318608, 318685, 388812, G05B 1300

Patent

active

052046010

ABSTRACT:
A motor speed controller implements a speed control to phase control switch over. When the switch over occurs on initial offset between the reference speed signal phase and the current motor position phase is determined. The reference speed signal is then offset by this phase difference thereby achieving a quicker servo lock.

REFERENCES:
patent: 4543516 (1985-09-01), Kobori et al.
patent: 4564795 (1986-01-01), Parkes et al.
patent: 4658191 (1987-04-01), Okita et al.
patent: 4803568 (1989-02-01), Miyake
patent: 4902949 (1990-02-01), Hirata
patent: 4999714 (1991-03-01), Vogel
patent: 5010287 (1991-04-01), Mukai et al.

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