System for insuring rotational direction for an alternating curr

Details System for insuring rotational direction for an alternating curr System for insuring rotational direction for an alternating curr

1986-09-08

1987-09-22

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Reversing

318756, 318280, H02P 320, H02P 140

Patent

active

046957820

ABSTRACT:
A system for insuring the correct rotational direction of a permanent magnet, bi-directional alternating current motor. A sensor driven by the output of the motor provides a time varying voltage signal that is differentiated and detected. The signal is then applied to either agree with or override the output control signal from a conventional motor control circuit. When the system operates in the correct direction, the signal complements the motor control. When the device tries to operate in an incorrect direction, the signal overrides the motor control signal.

REFERENCES:
patent: 2973481 (1961-02-01), Frye
patent: 3068388 (1962-12-01), Burski
patent: 3171075 (1965-02-01), Kirk
patent: 3181046 (1965-04-01), Sutton
patent: 3184670 (1965-05-01), Reynolds
patent: 3416054 (1968-12-01), Galles
patent: 3484676 (1969-12-01), Wilkerson
patent: 3568020 (1971-03-01), Lisi
patent: 3611093 (1971-10-01), Walker
patent: 3619747 (1971-11-01), Pedersen
patent: 3639821 (1972-02-01), Byers et al.
patent: 3731173 (1973-05-01), Pinckaers
patent: 3789283 (1974-01-01), Kabat
patent: 3997826 (1976-12-01), Mayer
patent: 4045682 (1977-08-01), Poorbaugh et al.
patent: 4112343 (1978-09-01), Douglas
patent: 4146826 (1979-03-01), Wojslawowicz

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