Motor control and drive circuit

Details Motor control and drive circuit Motor control and drive circuit

1993-06-25

1995-03-21

Shoop, Jr., William M.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318778, 318254, 318138, 318439, H02P 528

Patent

active

053999533

ABSTRACT:
A peak level of a drive signal U having predetermined inclination portions is detected, and a detection signal Q is outputted when the peak level has not reached a predetermined value. Since the detection signal Q indicates the out-of-step condition of the motor, the use of the detection signal Q allows reactivation or the like to be triggered easily in a simple circuit. Therefore, the rotation of the motor can be activated by reactivation or the like without strict adjustment but with only a practically adequate adjustment.

REFERENCES:
patent: 3952237 (1976-04-01), Kimizuka
patent: 4004205 (1977-01-01), Yamamoto et al.
patent: 4356437 (1982-10-01), Saito et al.
patent: 4565956 (1986-01-01), Zimmermann et al.
patent: 4698577 (1987-10-01), Seymour et al.
patent: 4740736 (1988-04-01), Sidman et al.
patent: 5212437 (1993-05-01), Hescht et al.

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