Temat: wariancja - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Application of Allan variance in gyroscopic sensor noise analysis
Autorzy:: Kotas, R.
Kamiński, M.
Marciniak, P.
Sakowicz, B.
Napieralski, A.
Kurzych, A.
Krajewski, Z.
Powiązania:: https://bibliotekanauki.pl/articles/397740.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:: Allan variance
gyroscope
accelerometer
MEMS
wariancja Allana
żyroskop
akcelerometr
Opis:: The paper presents the investigation of gyroscopic sensor noise properties used in the construction of body position detection device for posturographic testing. The first part shows the sources of noise in gyro sensors and their measurement methods. In the second part of the paper, the authors describe their own research on the efficiency of the calculation of the Allan variance (one of the popular noise evaluation methods) and the wrong concept of calculations acceleration. The article concludes with an explanation of the reasons for the lack of theoretical research and the results of practical measurements of the sensors used in the project.
Źródło:: International Journal of Microelectronics and Computer Science; 2017, 8, 1; 10-15
2080-8755
2353-9607
Pojawia się w:: International Journal of Microelectronics and Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Estimating the noise-related error in continuous-time integrator-based ADCs
Autorzy:: Gosselin, P.
Koukab, A.
Kayal, M.
Powiązania:: https://bibliotekanauki.pl/articles/398023.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:: noise
white noise
flicker noise
error
accuracy
standard deviation
variance
integrator-based ADC
incremental
Sigma-Delta
szum
szum biały
fliker-szum
błąd
dokładność
odchylenie standardowe
wariancja
ADC
Opis:: From first-order incremental ΣΔ converters to controlled-oscillator-based converters, many ADC architectures are based on the continuous-time integration of the input signal. However, the accuracy of such converters cannot be properly estimated without establishing the impact of noise. In fact, noise is also integrated, resulting in a random error that is added to the measured value. Since drifting phenomena may make simulations and practical measurements unable to ensure longterm reliability of the converters, a theoretical tool is required. This paper presents a solution to compute the standard deviation of the noise-generated error in continuous-time integrator-based ADCs, under the assumption that a previous measure is used to calibrate the system. In addition to produce a realistic case, this assumption allows to handle a theoretical issue that made the problem not properly solvable. The theory is developed, the equations are solved in the cases of pure white noise, pure flicker noise and low-pass filtered white noise, and the implementation issues implied by the provided formulas are addressed.
Źródło:: International Journal of Microelectronics and Computer Science; 2016, 7, 2; 54-59
2080-8755
2353-9607
Pojawia się w:: International Journal of Microelectronics and Computer Science
Dostawca treści:: Biblioteka Nauki

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