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Abstract

A system and technique is disclosed for providing a low-cost, two-axis rate and acceleration transducer assembly which has improved bandwidth for providing outputs of acceleration while reducing ripple. The system includes a sensor structure utilizing piezoelectric generator elements affixed in a rotating configuration and generating a periodic signal having amplitudes representing the rates and accelerations. The structure includes three pairs of sensors, wherein each sensor of each pair of sensors is spaced 180.degree. from the other sensor of that pair about a rotating hub structure. One pair provides two-axis rate signals, while the remaining two pair provide two-axis acceleration signals. In the remaining two pair, each of the sensors of a pair are spaced 180.degree. from one another and 90.degree. from one of the elements of the other pair. A demodulator is coupled to receive the combined output of each acceleration pair to produce low ripple signals without filtering or with reduced filtering.

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First Claim