Computational Experiments on the Step and Frequency Responses of a Three-Axis Thermal Accelerometer

Computational Experiments on the Step and Frequency Responses of a Three-Axis Thermal Accelerometer

The sensor response has been reported to become highly nonlinear when the acceleration added to a thermal accelerator is very large, so the same response can be observed for two accelerations with different magnitudes and opposite signs. Some papers have reported the frequency response for the horiz...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Vol. 17; no. 11; p. 2618
Main Authors: Ogami, Yoshifumi, Murakita, Naoya, Fukudome, Koji
Format: Journal Article
Language:English
Published: Switzerland MDPI AG 14-11-2017
MDPI
Subjects:
Acceleration
Accelerometers
Computation
computational fluid dynamics
cross-axis sensitivity
Experiments
Frequency response
Heat
nonlinearity
Sensors
Signs
step response
Temperature
thermal accelerometer
computational fluid dynamics
nonlinearity
frequency response
step response
thermal accelerometer
cross-axis sensitivity
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Summary:The sensor response has been reported to become highly nonlinear when the acceleration added to a thermal accelerator is very large, so the same response can be observed for two accelerations with different magnitudes and opposite signs. Some papers have reported the frequency response for the horizontal acceleration to be a first-order system, while others have reported it to be a second-order system. The response for the vertical acceleration has not been studied. In this study, computational experiments were performed to examine the step and frequency responses of a three-axis thermal accelerometer. The results showed that monitoring the temperatures at two positions and making use of cross-axis sensitivity allow a unique acceleration to be determined even when the range of the vertical acceleration is very large (e.g., -10,000-10,000 g). The frequency response was proven to be a second-order system for horizontal acceleration and a third-order system for vertical acceleration.
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ISSN:1424-8220
1424-8220
DOI:10.3390/s17112618