[01] Almaz Mehdiyeva, Control and System Engineering Department, Azerbaijan State Oil and Industry University, Baku, Azerbaijan.

The research is devoted to the construction of an inverse correction filter, to isolate a useful signal that has been exposed to a direct filter. The structure of the reverse filter for each direct filter is individual and calculated based on the parameters of the direct filter. So, for a high-frequency finite difference filter, the filter of a finite sum is inverse. The orders of the forward and reverse filters must be coordinated. Using the software MATLAB, we assembled the circuit of the system, and investigated the effect of the reverse filter on the output signal of the system. The synthesis of the most optimal low-frequency filter having non-integer coefficients is carried out. In a cascade with a finite-difference filter, it suppresses all components of the error in the entire frequency band of the measuring signal.

Measuring System, Measurement Experiment, Measurement Information, Digital Signal Processing, Correcting Filtration, Reverse Filter, Filtering Algorithms, Adaptive Filters

[01] Aliyev Т. А. Robust Technology with Analysis of Interference in Signal Processing. New-York: Kluwer, 2003. 199 p. [02] Aliev T. A. Digital Noise Monitoring of Defect Origin/ Springer Science + Business Media, New York, 2007, 224 p. [03] Abdullayev I. M., Goldberg O. D. Automation of the control parameters and diagnostics of electrical machin. M. Energoatomizdat, 2007, 160 p. [04] Isayev M. M., Mehdiyevа A. M. Combined test-algorithmic method for increasing the accuracy of measurements in fuel-energy facilities The 6th International Conference on Control and Optimization with Industrial Applications. July 11-13, 2018. Baku, Azerbaijan. pp. 169-171. [05] Bollinger J. G., Duffie N. A. Computer Control of Machines and Processes. Addison-Wesley, 2005. [06] Bolton W. Programmable Logic Controllers: An Introduction, Butterworth-Heinemann, 2007. [07] Mamedov R. G., Isayev M. M., Agaev F. G., Mehdizade E. K. Structural-algorithmic methods for increasing the accuracy of measurements. "Problems of the oil and gas industry." 2010. pp. 229-242. [08] Mehdiyev K. A., Mehdiyeva A. M., Aliyeva L. A. Means to improve the accuracy of digital processing of measurement information. Materials of the International scientific and practical conference. “Proceedings of academic science-2014”. Sheffield 2014, pp. 30-32. [09] Yusifov S. I., Mirzoyev O. M., Allahverdiyev E. V. Modern automation technologies for oil and gas resources mastering processes News of Azerbaijan Higher Technical Schools of the Azerbaijan State Oil Academy N 1, 2015. pp. 69-73. [10] Allahverdiyeva N. R., Mehdiyeva A. M., Mehdizadə E. K. Increase the accuracy of conversion and digital processing of electrical signals. "Information-measuring and control systems". Moscow, 2010, No. 9, vol. 8, pp. 69-74. [11] Isayev M. M. İncreasing accuracy of measurement using the combined test algorithms. Transactions of Azerbaijan Institutes of Technology. Baku. 2018. № 3 (113), pp. 77-84 [12] Mehdiyeva A. M. Increase of accuracy of measurements at the oil and gas enterprises. Material for the VIII International scientific practical conference. Modern information technology. 17-25 February. T 34. Sofia. 2013. pp. 20-21. [13] Mehdiyevа A. M. Cumulative analysis of measurement processes and a correcting filtration International Journal of Electronic Engineering and Computer Science. Vol. 1, No. 1, 2016, pp. 35-39. [14] Mailov R. A., Mehdiyevа A. M., Khanmamedova E. A. Correction of electric signals transmitted on damaged cable lines «Kluczowe aspekty naukowej działalności - 2016». Volume 8, pp. 54-56.