Dynamic pressure sensor calibration techniques offering expanded bandwidth with increased resolution

David Wisniewiski

doi:10.1117/12.2084248

27 March 2015 Dynamic pressure sensor calibration techniques offering expanded bandwidth with increased resolution

David Wisniewiski

Proceedings Volume 9435, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2015; 943536 (2015) https://doi.org/10.1117/12.2084248
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2015, San Diego, California, United States

Abstract

Advancements in the aerospace, defense and energy markets are being made possible by increasingly more sophisticated systems and sub-systems which rely upon critical information to be conveyed from the physical environment being monitored through ever more specialized, extreme environment sensing components. One sensing parameter of particular interest is dynamic pressure measurement. Crossing the boundary of all three markets (i.e. aerospace, defense and energy) is dynamic pressure sensing which is used in research and development of gas turbine technology, and subsequently embedded into a control loop used for long-term monitoring. Applications include quantifying the effects of aircraft boundary layer ingestion into the engine inlet to provide a reliable and robust design. Another application includes optimization of combustor dynamics by “listening” to the acoustic signature so that fuel-to-air mixture can be adjusted in real-time to provide cost operating efficiencies and reduced NO_x emissions. With the vast majority of pressure sensors supplied today being calibrated either statically or “quasi” statically, the dynamic response characterization of the frequency dependent sensitivity (i.e. transfer function) of the pressure sensor is noticeably absent. The shock tube has been shown to be an efficient vehicle to provide frequency response of pressure sensors from extremely high frequencies down to 500 Hz. Recent development activity has lowered this starting frequency; thereby augmenting the calibration bandwidth with increased frequency resolution so that as the pressure sensor is used in an actual test application, more understanding of the physical measurement can be ascertained by the end-user.

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David Wisniewiski "Dynamic pressure sensor calibration techniques offering expanded bandwidth with increased resolution", Proc. SPIE 9435, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2015, 943536 (27 March 2015); https://doi.org/10.1117/12.2084248

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KEYWORDS

Sensors

Calibration

Sensor calibration

Aerospace engineering

Defense and security

Environmental monitoring

Environmental sensing

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