Increasing calibration accuracy of the humidity control measuring device of bulk materials

Erkin Uljaev, Sh.N. Narzullaev, S Erkinov

Тошкент давлат техника университети хабарлари · 2020-yil

Annotatsiya

For increasing accuracy of a measuring device, before carrying out measurement, implementation of graduation, which consists of the establishment of correlation dependence between indications of the measuring device and humidity of specific material, is required. For the creation of calibration dependence of the developed measuring device as the measured 10 test samples of ammonium nitrate (nitrogen) with humidity from 0% to 2.5%, with different intervals are selected. For determination of the humidity content of ammonium nitrate, it is measured the dependence of the frequency on the humidity content of the sample. For each test, several values of frequencies of the measuring generator entered in the table with a calibration frequency are received. In this work, the short review of the known methods on the creation of calibration dependence is carried out, the impossibility of application of exact methods for an objective solution because of removal need of an excessively large number of experimental data at the calibration of the measuring transducer is set and for some other reasons. The analysis of the application of some classes of functions is made for the approximation of an output characteristic. However, the described methods above should be exposed to modification and simplification. In this regard, it is offered to use the least-squares method for improvement of calibration characteristic of a measuring device in the work, the function of calibration dependence in the form of a polynom of the seventh degree is made and matrixes of a system of equations of derivatives of first order are constructed. Further, the help of applying the software environment of Mathcad calculates the made systems of equations. For this, the coefficients of the system of equations are presented in the form of a matrix, and the free terms - in the form of a vector. Further, utilization of the Gaussian method, correction factors were found, on the basis of which a mathematical model of the calibration dependence was built that allows for the optimal accuracy of the calibration of the measuring device.

Maqola ma’lumotlari
MualliflarErkin Uljaev, Sh.N. Narzullaev, S Erkinov
JurnalТошкент давлат техника университети хабарлари
NashriyotТошкент давлат техника университети
ISSN2181-0400, 2181-1180
Nashr sanasi2020-09-30
Jild2020
Son3
Betlar172-179
TilIngliz
DOI10.51346/tstu-01.20.3-77-0087
Indeksga qo‘shilgan2026-09-02

DOI: 10.51346/tstu-01.20.3-77-0087 · Maqolaning asl sahifasi

Iqtibos keltirish

APAErkin Uljaev, Sh.N. Narzullaev, & S Erkinov (2020). INCREASING CALIBRATION ACCURACY OF THE HUMIDITY CONTROL MEASURING DEVICE OF BULK MATERIALS. Тошкент давлат техника университети хабарлари, 2020(3), 172-179. https://doi.org/10.51346/tstu-01.20.3-77-0087
GOST (OAK)Erkin Uljaev, Sh.N. Narzullaev, S Erkinov INCREASING CALIBRATION ACCURACY OF THE HUMIDITY CONTROL MEASURING DEVICE OF BULK MATERIALS // Тошкент давлат техника университети хабарлари. – 2020. – T. 2020, № 3. – P. 172-179. – DOI: 10.51346/tstu-01.20.3-77-0087.
MLAErkin Uljaev, Sh.N. Narzullaev, and S Erkinov. “INCREASING CALIBRATION ACCURACY OF THE HUMIDITY CONTROL MEASURING DEVICE OF BULK MATERIALS.” Тошкент давлат техника университети хабарлари, 2020(3), 172-179, 2020. https://doi.org/10.51346/tstu-01.20.3-77-0087
ChicagoErkin Uljaev, Sh.N. Narzullaev, and S Erkinov. “INCREASING CALIBRATION ACCURACY OF THE HUMIDITY CONTROL MEASURING DEVICE OF BULK MATERIALS.” Тошкент давлат техника университети хабарлари, 2020(3), 172-179 (2020). https://doi.org/10.51346/tstu-01.20.3-77-0087
HarvardErkin Uljaev, Sh.N. Narzullaev, and S Erkinov (2020) ‘INCREASING CALIBRATION ACCURACY OF THE HUMIDITY CONTROL MEASURING DEVICE OF BULK MATERIALS’, Тошкент давлат техника университети хабарлари, 2020(3), 172-179. https://doi.org/10.51346/tstu-01.20.3-77-0087
BibTeX
@article{erkinuljaev2020,
  title = {INCREASING CALIBRATION ACCURACY OF THE HUMIDITY CONTROL MEASURING DEVICE OF BULK MATERIALS},
  author = {Erkin Uljaev and Sh.N. Narzullaev and S Erkinov},
  journal = {Тошкент давлат техника университети хабарлари},
  year = {2020},
  volume = {2020},
  number = {3},
  pages = {172-179},
  doi = {10.51346/tstu-01.20.3-77-0087},
  url = {https://doi.org/10.51346/tstu-01.20.3-77-0087}
}

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