Rotation sensor output signal processor

Details Rotation sensor output signal processor Rotation sensor output signal processor

G - Physics

01

C

G01C 19/66 (2006.01)

Patent

CA 2124828

Angular motion sensor signals (S1, S2) from an inertial integrating rate sensor (10) are provided to a translation device that provides a translated output signal (U1, U2) that is substantially the same as an input sensor signal (S1, S2) translated in frequency by an amount equal to a reference frequency (R1, R2). The translated output signal (U1, U2) is provided to a phase detector (34, 36) that provides a detector output signal (e1, e2) indicative of phase differences between the translated output signal and a feedback signal. The phase detector output signal is provided to a voltage controlled oscillator (42) which provides an oscillator output signal that is related to the phase detector ouptut signal. The voltage controlled oscillator signal is provided to a counter (44) that is capable of providing a count that is representative of a highly resolved measure of angular rotation. In addition, the counter (44) is capable of providing the feedback signal that is related to the variable frequency output signal.

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