The article describes the issue of determining the adhesion behavior in the “wheelrail” contact zone of the traction electric drive of mining and electric locomotives. The purpose of this article is researching the adhesion behavior in the wheel-rail contact zone. The article presents the requirements for the control system of the traction electric drive. Based on the requirements, the main task of the control system is determined. A typical structure of the control system is given and its decomposition by functions is presented: a traction drive control system and a traction force control system. A classification of traction force control systems according to control methods is presented. The control method for determining the behavior of adhesion in the wheel-rail contact zone is considered in detail. Equations are presented for calculating the adhesion torque and the adhesion coefficient, these equations are based on second-order differential equations describing the structure of the mechanical part of the traction drive. A definition is given for the observed adhesion torque and the observed adhesion coefficient. The mathematical modeling of the locomotive is presented. The results of mathematical modeling showed that the equations for calculating the observed adhesion torque and the observed adhesion coefficient give an error of less than 1%. A practical experiment was carried out directly on the object. The results of the practical experiment confirmed the theoretical methods for calculating the observed adhesion torque and the observed adhesion coefficient. Additionally, the presence of periodic noise in the signals of the observed adhesion torque and the observed adhesion coefficient was revealed, as a result of which the task for the next study was determined.

Kharisov I. R., Karyakin A. L. Wheel/rail adhesion research for mining locomotive and electric locomotive. MIAB. Mining Inf. Anal. Bull. 2024;(1-1):59—73. [In Russ]. DOI: 10.25 018/0236_1493_2024_011_0_59.

KharisovI. R.¹, Postgraduate Student, e-mail: nexuskharisa@gmail.com, https://orcid. org/0000-0001-5078-0533;

Karyakin A. L.¹, Dr. Sci. (Eng.), Professor, e-mail: karyakin.a@ursmu.ru, https://orcid. org/0000-0001-6196-3263.

¹ Ural State Mining University, Russia, 620144, Russia, Yekaterinburg, st. Kuibyshev, 30.

Kharisov I. R., e-mail: nexuskharisa@gmail.com.

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