Synchro-to-digital conversion with windowed peak determination

Details Synchro-to-digital conversion with windowed peak determination Synchro-to-digital conversion with windowed peak determination

1999-01-08

2000-06-13

Williams, Howard L.

Coded data generation or conversion

Phase or time of phase change

341116, 318652, 702145, H03M 148

Patent

active

060754729

ABSTRACT:
The present invention is directed to a method and apparatus which utilizes a software-based digital signal processing circuit to generate a signal which is representative of the status of a movable component. A preferred embodiment of the apparatus of the present invention includes a synchro which is connected to a movable component. An analog reference excitation may be applied to the synchro, and the synchro generates analog synchro signals which bear a relationship to the status of the movable component. The analog synchro signals are converted to digital synchro signals by a plurality of analog-to-digital converters. A digital reference signal and the digital synchro signals are provided to a software-based digital signal processing circuit which preferably corrects constant and time-varying errors in the digital synchro signals and generates a status signal which is representative of the status of the movable component. For instance, the status signal may represent the angular position of the movable component. A different embodiment of the status signal may represent the angular velocity of the movable component.

REFERENCES:
patent: 3618073 (1971-11-01), Domchick et al.
patent: 4651130 (1987-03-01), Pennell
patent: 4876655 (1989-10-01), Carlton et al.
patent: 5034743 (1991-07-01), Deppe et al.
patent: 5646496 (1997-07-01), Woodland et al.
patent: 5757560 (1998-05-01), Fisherman
Synchro/Resolver Conversion Handbook Fourth Edition, DDC ILC Data Device Corporation, 1974, pp. 1-342.

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