Electricity: motive power systems – Positional servo systems – With particular 'error-detecting' means
Patent
1980-03-10
1981-05-26
Dobeck, B.
Electricity: motive power systems
Positional servo systems
With particular 'error-detecting' means
318636, 340347SY, 329 50, G05B 106
Patent
active
042700779
ABSTRACT:
A synchro resolver angular position sensor provides the sine and cosine of angular position by applying a square wave excitation to the resolver stator winding. The corresponding square wave outputs of the sine and cosine windings of the resolver rotor are sampled in time synchronism with the excitation at a predetermined time phase of the square wave excitation cycle. The sampled sine and cosine amplitudes are converted into digital format via an analog-to-digital converter for application to a digital processor. The upper corners of the positively-going leading edges and the lower corners of the negatively-going leading edges of the square wave excitation waveform are rounded to minimize ringing of the sine and cosine square wave outputs from the resolver.
REFERENCES:
patent: 3710223 (1973-01-01), Cottrell
patent: 3990062 (1976-11-01), Miller et al.
patent: 4031479 (1977-06-01), Thomas, Jr. et al.
patent: 4095159 (1978-06-01), Tirelli
patent: 4160245 (1979-06-01), Scott
Buemi, Jr. Joseph M.
Swartz Harold L.
Cooper Albert B.
Dobeck B.
Sperry Corporation
Terry Howard P.
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