Method of leading a moving body driven by a direct current brush

Details Method of leading a moving body driven by a direct current brush Method of leading a moving body driven by a direct current brush

1984-10-29

1986-12-23

Shoop, Jr., William M.

Electricity: motive power systems

Switched reluctance motor commutation control

318265, 318467, H02P 602, H02K 2912

Patent

active

046314571

ABSTRACT:
The present invention relates to a method of leading a moving body, such as a print head carrier of a printer of the like, which is driven by a direct current brushless motor, to a starting position. The direct current brushless motor, which forms part of the present invention, includes a stator including a plurality of armature coils secured on a stator yoke through a substrate, a disk-like magnet having N and S poles arranged alternately in the circumferential direction, the magnet being arranged to confront the armature coils, and a rotatable rotor provided with a speed-detecting slit arranged outside the magnet. Rotating power is obtained by applying an electric current corresponding to the magnetic pole of the magnet to each armature coil. A speed detector detects the speed-detecting slit and puts out a frequency pulse voltage proportional to the speed and a counter counts the output pulses from the speed detector to count out the timing to change the excitation phases to the armature coils so as to continuously rotate the rotor. The method of the present invention is characterized in that a stopper to stop the motion of the moving body is arranged so that at a position of a maximum torque of the direct current brushless motor or a predetermined position close to the maximum torque position, the moving body impinges against the stopper to stop rotation of the rotor, the count number in the counter is reset and the motor is then driven in the reverse direction to lead and locate the moving body at a starting position.

REFERENCES:
patent: 4401930 (1983-08-01), Kato et al.
R. A. Phillips et al, "Stepper Motor Control", IBM Technical Disclosure Bulletin, vol. 12, No. 4, Sep. 1969, p. 584.

Affiliated with

Also associated with

Rating

Method of leading a moving body driven by a direct current brush does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of leading a moving body driven by a direct current brush, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of leading a moving body driven by a direct current brush will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-173475