Enhanced measurement validation via ultra-precise spectral analysis
نویسندگان
چکیده
Abstract Validating real-time measurements from a sensor/instrument is multifaceted challenge. One goal the provision of dynamic uncertainty analysis, ideally incorporating influence instrument faults and local environment. Such an analysis requires broader model behaviour, accommodating non-ideal operational conditions. It may also require wider range transducer data than when ideal, fault-free operation assumed. A companion presentation describes ultra-precise Fast Fourier Transform (FFT) technique. In this presentation, technique applied to Coriolis mass flow meter, resonant sensor with rich spectral characteristics. Typically, meter driven in single natural mode mechanical vibration; frequency varies fluid density, while rate density calibration coefficients assume fixed ratio adjacent vibration mode. prototype can operate two modes simultaneously. The new FFT exhibits high precision (mode frequencies independent sensors agree by up 10−8 Hz), allowing precise tracking true for on-line measurement validation. Additional signal components, such as mains noise external vibration, be identified monitored.
منابع مشابه
Precise Measurement of Lunar Spectral Irradiance at Visible Wavelengths
We report a measurement of lunar spectral irradiance with an uncertainty below 1 % from 420 nm to 1000 nm. This measurement uncertainty meets the stability requirement for many climate data records derived from satellite images, including those for vegetation, aerosols, and snow and ice albedo. It therefore opens the possibility of using the Moon as a calibration standard to bridge gaps in sate...
متن کاملUltra-wideband spectral analysis using S2 technology
This paper outlines the efforts to develop an ultra-wideband spectrum analyzer that takes advantage of the broad spectral response and fine spectral resolution ( 25 kHz) of spatial-spectral (S2) materials. The S2 material can process the full spectrum of broadband microwave transmissions, with adjustable time apertures (down to 100 ms) and fast update rates (up to 1 kHz). A cryogenically cooled...
متن کاملPrecise Cost Analysis via Local Reasoning
The classical approach to static cost analysis is based on first transforming a given program into a set of cost relations, and then solving them into closed-form upper-bounds. The quality of the upper-bounds and the scalability of such cost analysis highly depend on the precision and efficiency of the solving phase. Several techniques for solving cost relations exist, some are efficient but no...
متن کاملPrecise Cache Timing Analysis via Symbolic Simulation
Worst-Case Execution Time (WCET) is a reliable guarantee for the temporal correctness of hard real-time systems. In this paper, we propose a novel integrated method for WCET analysis where micro-architectural modeling – with emphasis on caches – and systematic path-sensitivity, are synergized. This would give us very high precision for WCET analysis, but at the same time, it is a huge challenge...
متن کاملPrecise Analysis of Spectral Reflectance Properties of Cosmetic Foundation
The present paper describes the detailed analysis of the spectral reflection properties of skin surface with make-up foundation, based on two approaches of a physical model using the Cook-Torrance model and a statistical approach using the PCA. First, we show how the surface-spectral reflectances changed with the observation conditions of light incidence and viewing, and also the material compo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Science Talks
سال: 2023
ISSN: ['2772-5693']
DOI: https://doi.org/10.1016/j.sctalk.2022.100094