Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent
1996-07-26
1998-07-21
Snow, Walter E.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With rotor
318696, G01R 100
Patent
active
057839395
ABSTRACT:
A high frequency AC probe signal is applied to one coil of a stepper motor to induce a signal on the other coil. The induced signal varies in amplitude according to rotor position. The stepper motor is driven by a microprocessor in microsteps. The position of a mechanical stop is determined by monitoring the induced signal while driving the rotor to the stop. When the induced signal no longer changes in amplitude the number of the last microstep yielding movement is recorded as the rotor position corresponding to the stop position. Also by measuring the induced signal at each microstep over a whole rotor rotation and the signal when the rotor stops, a more precise value of the stop position is determined by interpolation. Alternatively, the flip back position of the gauge and thus the stop position is determined on the basis of the induced signal.
REFERENCES:
patent: 4774458 (1988-09-01), Aronoff
patent: 5032781 (1991-07-01), Kronenberg
patent: 5287050 (1994-02-01), Kronenberg et al.
patent: 5489842 (1996-02-01), Lippmann et al.
Lippmann Raymond
Nelson James Edward
Schnars Michael John
Selby Ronald Kenneth
Shepard Jeffrey Lynn
Delco Electronics Corporation
Funke Jimmy L.
Snow Walter E.
LandOfFree
Stepper motor gauge calibration by AC feedback does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stepper motor gauge calibration by AC feedback, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stepper motor gauge calibration by AC feedback will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1649802