Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10409415 | Sensors and Actuators A: Physical | 2005 | 6 Pages |
Abstract
This work presents a novel instrumentation technique for frequency-domain characterization of magnetoelastic sensors. By applying threshold-crossing counting to the transient response of a magnetoelastic sensor excited by sinusoidal pulses, frequency-domain analysis is accomplished without the necessity of using lock-in amplifier or FFT facilities as required in the conventional instrumentation techniques. The threshold-crossing counting technique is discussed and its electronic implementation described. The resulting compact and cost-effective microcontroller-based instrument is capable of frequency-domain analysis, and time-domain analysis including frequency counting and determination of the damping ratio.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Kefeng Zeng, Maggie Paulose, Keat G. Ong, Craig A. Grimes,