A self diagnostic system for piezoelectric sensorsA technique for determining the mounting conditions of a piezoelectric accelerometer is presented. This technique electrically stimulates the piezoelectric element in the 'diagnostic' frequency band measuring the electrical frequency response characteristics across a capacitive load impedance. The diagnostic frequency band is tipically much higher than the operating bandwidth of the accelerometer. The resonant frequencies of the accelerometer are included in the diagnostic band. By monitoring the shift in these resonant frequencies, via electrical stimulation techniques, certain diagnostic conditions including mounting conditions can be determined. Experimental data from a compression mode accelerometer is used to demonstrate this technique.
Document ID
19890059609
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Atherton, William J. (Cleveland State Univ. OH, United States)
Flanagan, Patrick M. (Cleveland State University OH, United States)