Resolver processor with error detection

Details Resolver processor with error detection Resolver processor with error detection

1980-04-24

1982-10-19

Sloyan, Thomas J.

Communications: electrical

Audible indication

Percussion-type sound producer

318565, 340347M, 340347AD, 34087031, H03K 1302

Patent

active

043553052

ABSTRACT:
A digital resolver processor measures the angle of a rotatable device. A resolver connected to the rotatable device generates sinusoidal signals as a function of an excitation signal and of the resolver angle. A phase shift network receives the sinusoidal signals and generates leading and lagging phase shifted signals with a relative phase shift proportional to resolver angle. A counter is enabled by the leading signal and inhibited by the lagging signal so that the contents of the counter represents the relative phase shift, and thus, the angle of the rotatable device. The angular position of the resolver is limited so that the contents of the counter is maintained within a predetermined range in the absence of a fault condition of the resolver terminals. The contents of the counter is forced outside the predetermined range in response to short or open circuit conditions of the resolver terminals, so that misleading angle representations may be recognized as such.

REFERENCES:
Schmid, Electronic Analog/Digital Conversions, Van Nostrand Reinhold Co., 1970, pp. 434-437.
The Engineering Staff of Analog Devices, Inc., Analog-Digital Conversion Handbook, 6/72, pp. II-10 to II-12.

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