| 摘要 |
<p>The invention concerns a device for multiplying the resolution of a speed and displacement sensor consisting of a mobile multipolar magnetic encoder facing two fixed analog sensors, delivering sinusoidal signals (S1, S2), out of phase by pi /2 comprising: a generator (3) of 2n sinusoidal signals (Si), of the same amplitude (A) as the signals (S1, S2) out of phase by pi /n; an analog multiplexer (5) delivering a signal (S) consisting of 2n successive portions of signals (Si); means (6) for acquiring the maximum envelope (E) of signals (Si); two generators (7, 10) of threshold (Li) and (Lj) of commutation proportional to the envelope (E); two comparators (8, 11) of signal (S) with thresholds (Li) and (Lj), delivering binary signals (Ai) and (Bj); two means for combining (9, 12) the binary signals (Ai) and (Bj) each delivering a signal of 2m*n periods in the interval of one period of one of the sensors.</p> |
