Martynov Aleksei Vladimirovich (lead engineer, Company "TBN energoservice")
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In this article, we consider the possibility of applying various options for automatic control and stabilization of the current signal in vertical electrical sounding devices used in soil resistivity measurements. The circuits should provide a smooth transition of the current after the unit is turned on to the preset level and the noise suppression associated with the physical characteristics of the medium to be measured is suppressed. The circuit must meet the specified requirements, among which zero static error in steady state, system stability, current stability under external disturbances, and others. The possibility and efficiency of application of PID regulators and other types, as well as their combinations, are analyzed. The analysis is performed using mathematical modeling software. Algorithms for evaluating the characteristics of circuits and checking them for compliance with specified requirements are described. Such characteristics as time of the transient process, noise suppression, stability of the system under external disturbances, static error in the steady state are estimated. The selection of parameters for the regulators of the circuits is carried out. The recommendations for speeding up the selection process are given. The stability of schemes with matched parameters is estimated. A comparative analysis of the final results is presented with the choice of schemes with the best results.
Keywords:ground specific resistance; Method of vertical electrical exploration; automatic control system; PID-regulator; modeling
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Citation link:
Martynov A. V. Automatic current control system in installations for measuring soil resistivity // Современная наука: актуальные проблемы теории и практики. Серия: Естественные и Технические Науки. -2017. -№06. -С. 33-40 |
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