Method and apparatus for detecting position and velocity of movi

Details Method and apparatus for detecting position and velocity of movi Method and apparatus for detecting position and velocity of movi

1984-11-07

1986-12-09

Eisenzopf, Reinhard J.

Communications: electrical

Continuously variable indicating

Using a particular modulation

324165, 318341, 34087018, G08C 1916, G01P 352, G01P 1300

Patent

active

046283145

ABSTRACT:
A method for detecting the position and the velocity by using an encoder mounted directly on a moving body wherein original signals of the encoder are pulse-width modulated by using a sampling carrier wave and the position is detected by measuring the width of the pulses thus obtained. An apparatus for implementing the method comprises a carrier wave generation circuit, a pulse width modulation circuit which pulse-width modulates the original signals coming from the encoder by using the carrier wave, a pulse width timer which measures the width of the pulses thus modulated, and a microcomputer connected to the pulse width timer.

REFERENCES:
patent: 3616692 (1971-11-01), Keller
patent: 3670324 (1972-06-01), Trevor
patent: 4038588 (1977-07-01), Woolfson
patent: 4288730 (1981-09-01), Graham
patent: 4323829 (1982-04-01), Witney
patent: 4468617 (1984-08-01), Ringwall
patent: 4481468 (1984-11-01), Ono

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