Measuring and testing – Instrument proving or calibrating – Speed – velocity – or acceleration
Patent
1997-07-10
1999-05-04
Noland, Thomas F.
Measuring and testing
Instrument proving or calibrating
Speed, velocity, or acceleration
73 139, G01P 2100
Patent
active
059005297
ABSTRACT:
An apparatus (10) and an associated method for testing an acceleration sensor assembly (14), which is preferably an accelerometer assembly. An electrical exciter (34) is operated in response to an excitation signal (32) from a signal generator (30). The exciter (34) applies oscillating excitation to the accelerometer assembly (14). An initial excitation is applied to the accelerometer assembly (14) by the exciter (34). The frequency of the initial excitation is varied over a range of frequencies via a signal (62) from a frequency range sweep function (56) to the signal generator (30). The output of the accelerometer assembly (14) is monitored during application of the initial excitation over the range of frequencies. A frequency value associated with a predetermined response in the output of the accelerometer assembly (14) is stored. The excitor (34) subsequently applies a test oscillating excitation at the stored frequency value to the accelerometer assembly (14). The output of the accelerometer assembly (14) is monitored during application of the test excitation. A determination function (72) determines whether the output of the accelerometer assembly (14) provides the predetermined response during application of the test excitation and provides an output signal (74) indicative of the determination.
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Hanisko John Cyril P.
Munch Carl A.
Noland Thomas F.
TRW Inc.
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