Electricity: motive power systems – Open-loop stepping motor control systems
Patent
1989-03-22
1990-08-14
Shoop, Jr., William M.
Electricity: motive power systems
Open-loop stepping motor control systems
318685, H02P 800
Patent
active
049490273
ABSTRACT:
An electric step motor has a sensor which functions to sense the position of the rotor. The sensor has an output which is connected to a first input of a unit for measuring lead angle. The measuring unit has an output which is coupled to a first input of a comparator having a second input which is connected to a selector for choosing a desired lead angle. The comparator is connected to an input of, and functions to regulate, a pulse generator which is set to emit pulses at a constant frequency equal to the rated operating frequency of the motor. The pulse generator has an output which is connected to a drive circuit for the motor, and such output is further connected to a second input of the measuring unit. The measuring unit informs the comparator of the actual lead angle. The comparator compares the actual lead angle with the desired lead angle established by the selector and activates the pulse generator accordingly. The pulse generator thereupon emits a specified number of pulses at the rated operating frequency of the rotor thereby causing the rotor to move. The comparator deactivates the pulse generator when no further displacement of the rotor is required.
REFERENCES:
patent: 4072888 (1978-02-01), Bechtle et al.
patent: 4426608 (1984-01-01), Larson et al.
patent: 4761598 (1988-08-01), Lovrenich
Bergmann Saul M.
Gerhard Berger GmbH & Co. KG Fabrik Elektrisher Gerate
Kontler Peter K.
Shoop Jr. William M.
LandOfFree
Arrangement for and method of operating an electric step motor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Arrangement for and method of operating an electric step motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement for and method of operating an electric step motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-464976