Electricity: motive power systems – Armature circuit control – Plural sources of voltage
Patent
1996-05-28
1997-11-25
Ro, Bentsu
Electricity: motive power systems
Armature circuit control
Plural sources of voltage
318439, 318721, 318723, H02P 618
Patent
active
056916132
ABSTRACT:
A method and circuit arrangement for controlling the position of a rotor of rotary motor or a linear motor, e.g. a stepper motor, synchronous motor or the like, has at least two stator windings and a rotor with salient poles, wherein an actual value of the rotor position, e.g. the angle of rotation or the displacement of the rotor, is determined and compared to a desired value of the rotor position, with the exciting current that flows through the stator windings to move the rotor being modified in dependence on a determination of the inductance of the stator winding. The inductance is determined by superimposing the exciting current with a periodic measuring current that has a higher frequency than the operating frequency of the motor so as to prevent the measuring current from influencing the excitation of the stator winding, and by measuring the reactive voltage drop caused by the measuring current across the stator winding. Based on the measured voltage drop the inductance can be determined to provide information about the actual rotor position.
REFERENCES:
patent: 3750000 (1973-07-01), Bruckner et al.
patent: 4763058 (1988-08-01), Heining et al.
patent: 5559419 (1996-09-01), Jansen et al.
Feiereisen Henry M.
LST Laser & Strahl Technik Herstellungs- und Handelsgesellschaft
Ro Bentsu
LandOfFree
Method for determining a rotor position of a rotary motor or lin 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 for determining a rotor position of a rotary motor or lin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for determining a rotor position of a rotary motor or lin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2109588