Motor control apparatus

Details Motor control apparatus Motor control apparatus

1992-11-03

1994-04-05

Shoop, Jr., William M.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318608, 318661, H02P 528

Patent

active

053008731

ABSTRACT:
A motor control apparatus for rotating a motor smoothly. A sine wave form which is an ideal wave form of a signal is stored, and the motor is driven by a signal having the ideal wave form obtained by correcting the period and the phase of the stored sine wave form. A comparator receives a detection signal which indicates the rotating state of the motor through an A/D converter, and obtains the correction values of the current period and phase. A wave form setting means corrects the set period and phase, generates a sine wave having the corrected period and phase on the basis of the sine wave data stored in a sine wave data region, and outputs a driving signal having the sine wave form through a D/A converter.

REFERENCES:
patent: 4758771 (1988-07-01), Saito et al.
patent: 4901001 (1990-02-01), Saito et al.
patent: 4972186 (1990-11-01), Morris

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