Motor drive control apparatus

Details Motor drive control apparatus Motor drive control apparatus

1998-01-28

1999-05-04

Masih, Karen

Electricity: motive power systems

Phasing or angular or linear positional control of movable...

318608, 318798, 318809, H02K 2316

Patent

active

059007060

ABSTRACT:
A motor drive control apparatus has a number of revolution setting circuit, a driving circuit for driving a motor to rotate at a predetermined number of revolution based on a number of revolution command signal output from the number of revolution setting circuit, a number of revolution detecting circuit for detecting the number of revolution of the motor, a driving voltage adjusting circuit for adjusting a level of the driving voltage of the motor to be supplied to the driving circuit, a motor control circuit including a PLL control circuit for controlling the number of revolution of the motor so that the phase difference between the phase of the number of revolution command signal and the phase of the number of revolution detection signal becomes within a predetermined range of value, and a voltage control circuit for instructing the driving voltage adjusting circuit to adjust the driving voltage of the motor to be at a level in the vicinity of the PLL controllable minimum level. Accordingly, it is possible to drive the motor at a driving voltage in the vicinity of the PLL controllable minimum level.

REFERENCES:
patent: 5631517 (1997-05-01), Kato et al.

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