Electricity: motive power systems – Positional servo systems – With particular 'error-detecting' means
Patent
1987-03-18
1988-08-23
Shoop, Jr., William M.
Electricity: motive power systems
Positional servo systems
With particular 'error-detecting' means
318603, 318608, 318314, 318326, G05B 106
Patent
active
047663596
ABSTRACT:
An absolute shaft position sensing circuit uses a magnetic sensor and a toothed wheel to produce two pulse trains which are used to determine the absolute position of a shaft which is coupled to the toothed wheel. One pulse train includes regularly spaced pulses which are fed to a phase locked loop to produce an oscillating output signal. A counter counts this signal and produces an output count which is representative of the relative angular position of the shaft. A second pulse train includes an irregularly spaced pulse. Circuitry is provided to detect the occurrence of this irregularly spaced pulse and to reset the counter in response to that occurrence, thereby making the count representative of the absolute angular position of the shaft.
REFERENCES:
patent: 3895365 (1975-07-01), Freed
patent: 3906327 (1975-09-01), O'Callaghan
patent: 4061950 (1977-12-01), Kayanuma
patent: 4216419 (1980-08-01), van Dam et al.
patent: 4223261 (1980-09-01), White
patent: 4295171 (1981-10-01), Hirota et al.
patent: 4298948 (1981-11-01), Davis
patent: 4310787 (1982-01-01), Seeger et al.
patent: 4364002 (1982-12-01), Suzuki et al.
patent: 4429267 (1984-01-01), Veale
patent: 4546293 (1985-10-01), Peterson et al.
Smith Geoffrey M.
Stacey Eric J.
Keane Patrick C.
Lenart R. P.
Shoop Jr. William M.
Westinghouse Electric Corp.
LandOfFree
Absolute shaft position sensing circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Absolute shaft position sensing circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Absolute shaft position sensing circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-837446