Motor control system

Electricity: motive power systems – Synchronous motor systems – Armature winding circuits

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

318723, H02F 528

Patent

active

049528602

ABSTRACT:
A control system for a motor is disclosed in which the position of a magnetic pole of the rotor of the motor is detected to produce a position signal, a multi-phase rectangular wave signal is produced by an oscillation circuit, and the frequency of the position signal is multiplied to obtain a multiple frequency signal. A stepwise wave changing stepwisely, with the same frequency as the multiple frequency, is generated. A signal corresponding to the position signal or a phase difference signal representing a phase difference between the multi-phase rectangular wave signal and the position signal is selectively applied as a drive signal to the motor by a drive signal switching circuit. A first signal is produced before the stepwise wave reaches a predetermined level and a second signal is produced when the predetermined level is reached. The drive signal switching circuit produces a signal corresponding to the position signal in response to the first signal thereby to drive the motor in brushless mode, and a signal corresponding to the phase difference signal in response to the second signal thereby to drive the motor in sync mode.

REFERENCES:
patent: 3783357 (1974-01-01), Ichiyanage
patent: 4085355 (1978-04-01), Fradella
patent: 4132931 (1979-01-01), Okuyama et al.
patent: 4855652 (1989-08-01), Yamashita et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Motor control system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Motor control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motor control system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1592047

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.