Method and system for driving a three-phase motor in a mass stor

Details Method and system for driving a three-phase motor in a mass stor Method and system for driving a three-phase motor in a mass stor

1998-11-20

1999-12-28

Sircus, Brian

Electricity: motive power systems

Positional servo systems

Pulse-width modulated power input to motor

318254, 318811, G05B 1128

Patent

active

060086114

ABSTRACT:
A method of driving an electric motor includes generating a periodic, driving voltage. The driving voltage comprises a sequence of first, second, and third waveforms. The first waveform in the sequence is a generally constant, high voltage. The second waveform in the sequence is a down hook voltage. The third waveform in the sequence is an up hook voltage. The method also includes applying the driving voltage to a coil of the motor to generate a generally sinusoidal current through the coil of the motor.

REFERENCES:
patent: 5767641 (1998-06-01), Kern et al.
patent: 5777449 (1998-07-01), Schlager
patent: 5804939 (1998-09-01), Yamai et al.
patent: 5877602 (1999-03-01), Kondoh et al.
patent: 5883479 (1999-03-01), Menegoli et al.
patent: 5939850 (1999-08-01), Kondoh
Inventor Bertram J. White, "Method and Apparatus for Driving a Polyphase, Brushless DC Motor", pending Provisional Patent Application, Serial No. 60/083,156, Apr. 27, 1998.

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