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Journal articles on the topic 'Traction torque'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Baek, Seung-Yun, Seung-Min Baek, Hyeon-Ho Jeon, et al. "Traction Performance Evaluation of the Electric All-Wheel-Drive Tractor." Sensors 22, no. 3 (2022): 785. http://dx.doi.org/10.3390/s22030785.

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This study aims to design, develop, and evaluate the traction performance of an electric all-wheel-drive (AWD) tractor based on the power transmission and electric systems. The power transmission system includes the electric motor, helical gear reducer, planetary gear reducer, and tires. The electric system consists of a battery pack and charging system. An engine-generator and charger are installed to supply electric energy in emergency situations. The load measurement system consists of analog (current) and digital (battery voltage and rotational speed of the electric motor) components using

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2

Samsonov, V. A., and Yu F. Lachuga. "Optimization of traction characteristics of agricultural tractors." Traktory i sel hozmashiny 84, no. 11 (2017): 49–56. http://dx.doi.org/10.17816/0321-4443-66355.

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The productivity of the machine-tractor unit depends on the energy saturation of the tractor. It is assumed that the optimum traction characteristic corresponds to the minimum operating weight of the tractor and its maximum energy saturation, at which the maximum productivity of the machine and tractor unit is achieved with the lowest fuel consumption and compliance with restrictions on tractive effort, slippage and theoretical speed. As a criterion for determining the maximum energy saturation, the maximum efficiency coefficient is adopted with maximum tractive power and maximum tractive effi

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3

Kim, Wan-Soo, Yeon-Soo Kim, and Yong-Joo Kim. "Development of Prediction Model for Axle Torque of Agricultural Tractors." Transactions of the ASABE 63, no. 6 (2020): 1773–86. http://dx.doi.org/10.13031/trans.14012.

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HighlightsA prediction model was developed for estimating the axle torque of an agricultural tractor.The model was developed by complementing and modifying a previously proposed traction equation.Compared to the actual axle torque, the proposed model attained MAPE of 2.1%, RMSE of 29 Nm, and RD of 2.7%.The model predicted axle torque more accurately than the traction force-based prediction model.Abstract. The tractor driving axle torque is an important factor in optimal transmission design and service life evaluation. Axle torque measurement sensor systems are very expensive, and traction forc

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4

Wu, Xiao Yu, Zhe Ming Chen, and Ze Hao Huang. "Analysis and Calculation of Electromagnetic Torque for the Voltage Source Traction Motors." Applied Mechanics and Materials 446-447 (November 2013): 672–77. http://dx.doi.org/10.4028/www.scientific.net/amm.446-447.672.

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The traction motor installed on the high-speed train is powered by inverter. A large number of harmonics may appear when motor is operating. Then the motor speed generate oscillation and finally the dynamic characteristic is affected in vehicle system. In this paper, relied on the electromagnetism of traction motor, the mechanism about emerging harmonic torque is analyzed. In addition, based on the equivalent circuit, the method of calculating the parameters in harmonic circuit is proposed. Two mathematical formulas are also proposed to obtain the fundamental electromagnetic torque and the har

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5

Park, Min-Jong, Hyeon-Ho Jeon, Jong-Dae Park, et al. "Development of a MBD simulation model for axle torque prediction of an electric agricultural vehicle." Journal of Agricultural Machinery Engineering 4, no. 1 (2024): 51–61. https://doi.org/10.12972/jame.20240006.

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The purpose of this study is to develop an electric all-wheel-drive vehicle simulation model for axle torque prediction. Simulation model was developed using RecurDyn, a multibody dynamics software, and tire-soil interaction parameters were inputted to reflect soil conditions. Driving simulation was performed at a speed of 7.5 km/h, which is the rated speed of driving motor. Traction was inputted between the soil and simulation model, and traction forces were considered as 25, 50, 75, and 100 N. Simulation was conducted for 20 seconds, and for the first 10 seconds, the simulation model was sta

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6

Baek, Seung-Yun, Hyeon-Ho Jeon, Wan-Soo Kim, Yeon-Soo Kim, Cheol-Gyu Park, and Yong-Joo Kim. "Data Analysis and Traction Performance Evaluation of an Electric All-Wheel Drive Tractor During Agricultural Operation." Journal of the ASABE 67, no. 5 (2024): 1217–29. http://dx.doi.org/10.13031/ja.15952.

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Highlights The study evaluated the feasibility of using a new type of platform, the electric AWD tractor, for agricultural operations. The data for key components of the electric AWD tractor during plowing were analyzed. The traction performance of the electric AWD tractor was evaluated via tractive efficiency and dynamic ratio. The electric AWD tractor was expected to replace conventional tractors in terms of traction performance. Abstract. Owing to the increasing need for research on electric all-wheel drive (AWD) systems, an investigation on the AWD systems applicable to tractors was conduc

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7

Li, Qingtao, Li Liang, Chao Li, Runtao Li, Chongyong Yan, and Shengzhen Liu. "Characteristic Investigation and Torque Distribution Diagram-Based Computational Method for Continuously Variable Power-Split Transmission." Mathematical Problems in Engineering 2022 (February 28, 2022): 1–15. http://dx.doi.org/10.1155/2022/6136766.

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The key parameter of power-split transmission is the planetary ratio. To obtain various planetary ratios in one transmission system, people use complex systems with multiple planetary gear trains, clutches, and brakes. Another solution is replacing the planetary gear train with a planetary traction drive. However, the participation of the planetary traction drive brings about creep and spin motion, which increase the difficulty of precise calculation. In this study, we investigate the relationships between torques and speeds. Then, we derive the torque and speed distribution formulas that cons

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8

Liu, Jianhua, Rui Nie, and Zheshu Li. "Multimotors Coordination Control Method for Consistent Total Traction Torque of Electric Locomotives." Journal of Advanced Transportation 2020 (September 1, 2020): 1–11. http://dx.doi.org/10.1155/2020/2092463.

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Multimotors traction is a common driving mode for electric locomotives. The complexity and variability of the operating environment often cause difficulties for one or some traction motors to output the distributed traction torque, which requires the redistribution of the torque output of multimotors to maintain the total traction torque of all motors at a given constant. To this end, a multimotors coordination control method was proposed for consistent total traction torque of electric locomotives. Through this approach, a traction torque-coordinated control structure was constructed on the b

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9

Geonea, Ionut, Nicolae Dumitru, Alexandru Margine, and Petre Cristian Copilusi. "Experimental Investigations Concerning Friction from Threaded Assemblies." Applied Mechanics and Materials 880 (March 2018): 33–38. http://dx.doi.org/10.4028/www.scientific.net/amm.880.33.

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In this research an experimental test rig and method to measure friction torque from screw-nut assemblies is presented. The experimental test rig uses to measure friction torque an elastic cylinder bush with strain gauge transducers. The frictions torque and the traction force from the threaded assembly are transmitted to the elastic cylinder bush and produce elastic deformations. The elastic cylinder is calibrated in order to establish a correlation between elastic deformation and force of solicitation. In order to measure the experimental data the MGCPlus data acquisition system is used. The

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10

Goolak, Sergey, Borys Liubarskyi, Ievgen Riabov, Vaidas Lukoševičius, Artūras Keršys, and Sigitas Kilikevičius. "Analysis of the Efficiency of Traction Drive Control Systems of Electric Locomotives with Asynchronous Traction Motors." Energies 16, no. 9 (2023): 3689. http://dx.doi.org/10.3390/en16093689.

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An analysis of the operating conditions of the traction drives of an electric rolling stock with asynchronous traction motors was conducted. In the process of operation, the electric traction drive with both direct torque control and vector control was found to possibly experience unstable modes, both in terms of power supply and load. The models of electric locomotive traction drives with asynchronous electric motors with either vector or direct torque control were adapted to account for the possible presence of the aforementioned operational factors. As a result of the modeling, the starting

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11

Amoroso, Pedro, Aleks Vrček, and Matthijn de Rooij. "A Novel Tribometer and a Comprehensive Testing Method for Rolling-Sliding Conditions." Machines 11, no. 11 (2023): 993. http://dx.doi.org/10.3390/machines11110993.

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This study introduces a method based on fine torque control to evaluate traction in rolling—liding line contacts under small slide-to-roll ratios (SRRs). To accomplish this, we engineered an innovative testing machine—a two-roller tribometer capable of precisely applying resisting torques to one of the rollers. Two types of tests were designed and conducted to validate our method and showcase the capabilities of the novel test setup. The first type, named the “Traction Decay Test”, proved to be effective in evaluating changes in the SRR over time. The second, named the “Torque-Mode Traction Te

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12

Yan, Xianghai, Hui Zhang, Xianzhe Li, Yanying Li, and Liyou Xu. "Control Strategy of Torque Distribution for Hybrid Four-Wheel Drive Tractor." World Electric Vehicle Journal 14, no. 7 (2023): 190. http://dx.doi.org/10.3390/wevj14070190.

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Based on the analysis of the operating conditions of the tractor, a Hybrid four-wheel drive tractor is proposed, and formulate the torque distribution control strategy based on fuzzy control, to control the driving wheel slip rate of the Hybrid four-wheel drive tractor in the high traction efficiency operating range of the tractor. The vehicle model of the Hybrid four-wheel drive tractor is established in AVL-CRUISE software, and the torque distribution control strategy based on fuzzy control is established in MATLAB/Simulink software. The AVL-CRUISE and MATLAB/Simulink co-simulation was carri

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13

Samsonov, V. A., and Yu F. Lachuga. "Calculation of the parameters of the corrector section of the speed characteristics tractor engine." Traktory i sel hozmashiny 85, no. 5 (2018): 20–25. http://dx.doi.org/10.17816/0321-4443-66390.

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One of the main indicators of the corrector section of the high-speed characteristics of the tractor engine is its torque adaptability factor. The article describes the method of General solution of the problem of calculation of this coefficient. The method is to minimize the difference between the two functions (optimality criterion): the first - the dependence of the denominator of the geometric series of gears on the coefficient of adaptability, the second-the dependence of the denominator on the tractor power range, that is, the ratio of the tangential thrust force in the last gear to the

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14

Wang, Neng Jian, Li Jie Zhou, Qiang Song, and De Fu Zhang. "Simulation Research on Braking Safety Properties of Aircraft Traction System." Key Engineering Materials 419-420 (October 2009): 705–8. http://dx.doi.org/10.4028/www.scientific.net/kem.419-420.705.

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The jack-knifing tendency of aircraft traction system during braking was discussed and analyzed using multi-body dynamics models that consist of aircraft-towing tractor, aircraft draw link and aircraft. The braking critical conditions of the aircraft traction system for straight-line braking and turning braking were discussed and analyzed respectively. In the case of straight-line braking, the effect of friction coefficient on the maximum braking torque is described. In the case of turning braking, the relationship between the maximum baking torque and relative angle is obtained.

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15

Belyaev, Alexander, Tatiana Trishina, and Dmitry Afonichev. "LOADING OF THE TRACTOR'S DRIVING WHEELS AS PART OF THE COMBINED UNIT." SCIENCE IN THE CENTRAL RUSSIA, no. 3 (June 28, 2024): 85–91. http://dx.doi.org/10.35887/2305-2538-2024-3-85-91.

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The load on the driving wheels of the tractor as part of the combined unit was studied. Energy-saturated universal row-crop integrated circuit tractor of class 2 with driving twin wheels of the same size, performing a technological operation in the inter-rows of row crops as part of a mounted wide-cut combined unit KRSh-8.1+NP-5.4+LTZ-155+KRSh-8.1 was used as a research object. The strain gauge method was used to determine the output load characteristics; paper-based wire strain gauges were used as the primary signal source, and inductive non-contact accelerometer and trackmeasuring wheel sens

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16

Li, Hao, Zheng He Song, and Bin Xie. "Plowing Performance Simulation and Analysis for Hybrid Electric Tractor." Applied Mechanics and Materials 365-366 (August 2013): 505–11. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.505.

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According to plowing operation characteristics, a case study on a parallel HET (hybrid electric tractor) with the torque combinator is conducted to develop a plowing operation performance simulation system. The mathematical models of drive equilibrium, battery, power combinator and control system are established respectively. A simulation system for evaluating the tractive performance, fuel economy, battery characteristics and controller performance of HET is developed in the environment of MATLAB/Simulink. Simulation results suggest that: in this HET, the output torque and traction vary in a

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17

Ovsyannikov, E. M., B. A. Ivobotenko, V. M. Yurkevich, and E. M. Koshelyev. "Direct torque control of asynchronous traction motor." Izvestiya MGTU MAMI 7, no. 2-1 (2013): 188–94. http://dx.doi.org/10.17816/2074-0530-68300.

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This paper proposes a new system of direct torque control of asynchronous traction motor with space vector modulation of voltage supply. The results of the simulation of traction asynchronous traction motor show advantages of the developed control system: simplicity of implementation, high dynamic performance and small fluctuations of the electromagnetic torque.

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18

Klimov, Alexander V. "Algorithm for forming traction and braking torque settings at the shaft of a traction motor by means of a single pedal." Izvestiya MGTU MAMI 17, no. 3 (2023): 261–71. http://dx.doi.org/10.17816/2074-0530-321668.

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BACKGROUND: Transport service providers and consumers specify requirements to vehicles for increasing energy efficiency, cost reduction, as well as improving ergonomics and comfort. Fuel costs are among the significant costs, so it is very promising to use vehicles with electric drives, such as battery-powered electric vehicles. It is very important for them to have energy-efficient control of traction drives that are the main sources of energy loss, characterized by high efficiency that helps to increase single-charge mileage. To achieve this, it is necessary to form the settings of the reque

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19

Klimov, Alexander V. "The observer of traction electromagnetic torque at the shaft of a traction electric motor." Tractors and Agricultural Machinery 90, no. 5 (2023): 423–32. http://dx.doi.org/10.17816/0321-4443-472138.

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BACKGROUND: Currently, the requirements to energy efficiency of transport vehicles are more and more tightened due to service cost reduction. Energy efficiency is the most relevant for them as it directly influences on the key feature — maximum mileage. Therefore it is necessary to control electric motors in a way to ensure maximal surface grip coefficient excluding propulsors’ slipping, as well as to establish operation modes of motors and switching between the modes to the one having the maximal efficiency. In this case, for effective control, it is necessary to define electromagnetic torque

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20

Thu Anh, An Thi Hoai, and Ngo Manh Tung. "Speed control for traction motor of urban electrified train in field weakening region based on backstepping method." Bulletin of Electrical Engineering and Informatics 13, no. 3 (2024): 1504–12. http://dx.doi.org/10.11591/eei.v13i3.5209.

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Tractor motors always operate in the speed region higher than rated speed, but is limited to the module of the stator current, stator voltage vectors. Additionally, mathematical model of traction motor has shown nonlinearity through the product of the state variables 𝑖𝑠𝑑, 𝑖𝑠𝑞 with the input variable 𝜔𝑠:𝜔𝑠𝑖𝑠𝑞, 𝜔𝑠𝑖𝑠𝑑. Therefore, this paper focuses on the study of speed control of traction motors in weakening field region while optimizing torque control, and choosing the backstepping method in designing speed–flux controller in order to solve the nonlinear structure. The simulation results of the

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21

Klimov, Aleksandr V. "Synthesis of an adaptive observer of the resistance torque at a shaft of a traction electric motor." Tractors and Agricultural Machinery 90, no. 2 (2023): 99–105. http://dx.doi.org/10.17816/0321-4443-119856.

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BACKGROUND: Operating companies and consumers have demands to vehicles for efficiency improvement and cost cut. A part of substantial expenses is fuel cost, therefore use of vehicles with electric drive such as hybrid or pure electric (battery-electric) has potential for agriculture. It is mainly important for them to have the drivetrain characterized by high efficiency that increases autonomous mileage for one charge. To achieve this, it is necessary to control electric motors in the way to ensure maximal surface grip coefficient without wheel slipping. In this case, real-time defining of whe

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22

Liu, Mengnan, Liyou Xu, and Zhili Zhou. "Design of a Load Torque Based Control Strategy for Improving Electric Tractor Motor Energy Conversion Efficiency." Mathematical Problems in Engineering 2016 (2016): 1–14. http://dx.doi.org/10.1155/2016/2548967.

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In order to improve the electrical conversion efficiency of an electric tractor motor, a load torque based control strategy (LTCS) is designed in this paper by using a particle swarm optimization algorithm (PSO). By mathematically modeling electric-mechanical performance and theoretical energy waste of the electric motor, as well as the transmission characteristics of the drivetrain, the objective function, control relationship, and analytical platform are established. Torque and rotation speed of the motor’s output shaft are defined as manipulated variables. LTCS searches the working points c

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23

Antoshchenkov, Roman, Galina Cherevatenko, Vadim Zadorozhny, Oleksandr Svitlichny, and Mikita Kuskov. "Research of the dynamics of the all-wheel-drive tractor-transport machine." Ukrainian Journal of Applied Economics and Technology 8, no. 3 (2023): 336–41. http://dx.doi.org/10.36887/2415-8453-2023-3-51.

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The study results of the dynamic and traction-energy performance of an all-wheel drive traction-transport vehicle have been presented. A diagram of a dynamic model of the transmission of an all-wheel drive traction-transport vehicle and a system for calculating the transmission dynamics in the Cauchy form has been compiled. The method makes it possible to determine the distribution of the coil fluids of the transmission elements of a traction-transport vehicle, the distribution of torque moments, and the distribution of additional traction forces on the wheels per hour. The method allows you t

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24

Speth, Peter, Andreas Hummler, Michael Buchholz, and Klaus Dietmayer. "Instability detection of the tire-road contact and torque control for wheel-individual driven vehicles." at - Automatisierungstechnik 66, no. 1 (2018): 41–52. http://dx.doi.org/10.1515/auto-2017-0091.

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Abstract Traction control for vehicles with wheel individual drives is a challenging task, since the wheel slips are unknown when each wheel transfers a torque. This contribution presents an approach which deals with this problem especially for electrical vehicles, where the drive torques can be changed very fast in comparison to vehicles with combustion engines. The algorithm is based on two filters. The first filter is an adaptive Kalman filter which is used to detect fast changes in the stability conditions of the wheels. The filter also delivers a valuation for the torque to which the driv

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25

Gao, You Shan, Zhi Song, Ai Hong Wang, and Ze Kun Jin. "Dynamic Simulation for Rolling Impact Compaction Machine." Advanced Materials Research 430-432 (January 2012): 1610–13. http://dx.doi.org/10.4028/www.scientific.net/amr.430-432.1610.

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Through established the simulation model for the engine and the traction host powertrain of rolling impact compaction machine, Simulated the working load with time history with the simulation parameters of rolling impact compaction machine. The simulation accuracy was verified by compared between the test speed and the simulation speed. The speed, turbine torque, torque converter efficiency, torque converter, gear ratios, fuel consumption, engine power, torque are dynamic changes follow with the alternating load and slope load so as to adapt to the dynamic drag torque fluctuations. Traction ho

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26

Savos'kin, Anatoliy, Anton Chuchin, and Aleksey Kalyakulin. "elektroAnalysis of the Load Transmission from the Locomotive Two-Axle Bogie Wheels to the Rails at the Torque Development in a Traction Motor." Proceedings of Petersburg Transport University 22, no. 1 (2025): 112–20. https://doi.org/10.20295/1815-588x-2025-1-112-120.

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Purpose: To determine vertical load changes transmitted from two-axle locomotive bogie wheel-sets to the rails at the torque development in traction electric motors that deteriorate the wheel-rail adhesion. To achieve the set goal, a design model have been performed and the starting torque developing during the electric motor traction transmission have been defined. This torque is expressed through the interaction forces of the traction elements transferred to the bogie frame and to the wheelset axles. To determine the vertical force changes from each wheelset to the rails due to the action of

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27

Kamar, Syamsul, Meiyanne Lestari, Hilda Luthfiyah, Okghi Adam Qowiy, Eko Syamsuddin Hasrito, and Sofwan Hidayat. "Determination analysis of main dimensions of induction motors for railway propulsion system." Bulletin of Electrical Engineering and Informatics 14, no. 3 (2025): 1727–34. https://doi.org/10.11591/eei.v14i3.8554.

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Induction motors are used in industrial production processes. As for its use as a traction motor, it requires special design and manufacture. The type of induction motor that is widely chosen as a traction motor for railways is a squirrel-cage three-phase induction motor. The main consideration for the selection or design of an induction motor as a railway traction motor is the torque requirement to drive the train. Other parameters that are considered in the selection of an induction motor as a traction motor include available spaces for installation. This research is using a three-phase, 2,3

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28

Kholodilin, I. Yu, A. V. Korzhov, M. A. Grigoriev, Yu I. Khokhlov, and N. V. Savosteenko. "Highly efficient electric drive with vision system for traction applications in heavy tracked vehicles." Omsk Scientific Bulletin, no. 180 (2021): 41–47. http://dx.doi.org/10.25206/1813-8225-2021-180-41-47.

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A new type of electric motor as a traction drive DET400 based on a field regulated reluctance machine (FRRM) provides high energy efficiency and high specific torque. A comparison is made between FRRM and various types of traction electric drives. The issues of designing the FRRM are considered, the geometric parameters of the electric machine are optimized to achieve the maximum specific indicators. To expand the functionality and ensure operational safety, it is proposed to introduce computer vision into the electronic control system. As a result, the FRRM is designed for traction applicatio

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29

Lingaitis, Leonas Povilas, and Lionginas Liudvinavičius. "ELECTRIC DRIVES OF TRACTION ROLLING STOCKS WITH AC MOTORS." TRANSPORT 21, no. 3 (2006): 223–29. http://dx.doi.org/10.3846/16484142.2006.9638070.

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The paper considers the variation of circuit design of the electric drives in traction rolling stocks when traditional DC electric machines are replaced with AC electric machines. Simplified circuit diagrams of the electric drives using electric machines of non‐commutator type are offered. Operational defects of DC traction engines are weighed against some positive characteristics of direct current series excitation in traction engines, determining their extensive use in the electric drives of traction rolling stocks. However, the rapid development of semiconductor devices, e.g. thyristors and

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Zhu, Xiao Yu, and Jian Yong Zuo. "Power Consumption Analysis of High-Speed Train’s Brake Discs." Advanced Materials Research 765-767 (September 2013): 120–24. http://dx.doi.org/10.4028/www.scientific.net/amr.765-767.120.

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Apart from the aerodynamic drag produced by transitional motion of high-speed train, the rotational parts of the train, especially the ventilated discs mounted on axles, would also cause resistance torques due to air pumping effect, which consume traction power. In this paper the train running process is divided into traction, uniform running and braking three phases, then the power consumed by the brake discs as well as the proportion of which in total traction or braking power during the three periods is calculated based on kinetic energy theorem. The results indicate that, during traction a

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31

Zheng, Xiang Pan, and Shu Mei Chen. "Analysis and Design of MRF Elevator Traction Transmission Device." Applied Mechanics and Materials 365-366 (August 2013): 395–400. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.395.

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A magneto-rheological fluid (MRF) elevator traction transmission is a device to transmit torque by the shear force of MR fluid. The development and principle of MRF transmission device are presented. Then the design method of the MRF transmission is investigated theoretically. The model of the torque transmitted by the MR fluid within the brake is derived to provide the theoretical foundation in the MRF elevator traction transmission design of the brake. Based on this model, after mathematical manipulation, the calculations of the structure and width of the MRF elevator traction transmission a

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Han, Shuo, Xiaohua Xiao, Jianguo Zhao, Xin Zhao, and Ruifan Yang. "Static Characteristics of Friction Block Teeth of Coiled Tubing Drilling Robot." Processes 11, no. 7 (2023): 2201. http://dx.doi.org/10.3390/pr11072201.

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Conventional downhole traction robots only provide axial traction, while coiled tubing drilling (CTD) robots must not only overcome the axial force but also overcome the reaction torque generated by the drill bit breaking the rock. Therefore, the tooth profile of the friction block of the conventional downhole traction robot cannot achieve effective support under the simultaneous action of the axial load and circumferential load. In this paper, based on the actual reaction torque conditions generated by CTD, a mechanical model of the friction block teeth of the CTD robot under the conditions o

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33

Bizhaev, А. V., S. M. Vetrova, A. S. Barchukova, and N. S. Krivyh. "Using individual tractor wheel drive through electric traction." Agricultural Machinery and Technologies 18, no. 2 (2024): 78–85. http://dx.doi.org/10.22314/2073-7599-2024-18-2-78-85.

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In agriculture, tractors serve as the principal machinery for performing traction and driving operations. They are mainly powered by diesel engines with an efficiency of about 40 percent. Electric motors boast an efficiency of 95 percent, presenting the opportunity to serve as independent drives for tractor wheels. The study review existing individual wheel drive systems, revealing operational efficiency improvements of up to 20 percent. A comparative analysis was conducted between tractors using traditional power units and those equipped with electric drive systems. The study also examined fa

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34

Bandel, P., and C. Di Bernardo. "A Laboratory Facility for the Study of Rubber Traction and Wear Resistance." Tire Science and Technology 18, no. 3 (1990): 201–13. http://dx.doi.org/10.2346/1.2141700.

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Abstract Phenomena occurring at the interface between the tread compound and the road surface are responsible for at least two main tire characteristics: traction capability and wear resistance. Both depend on the road surface geometry, the presence of thin films of water, local contact pressure, tread element stiffness, temperature, tangential slip, etc. To discount the effect of tire construction, a laboratory test using a small solid rubber wheel has been considered. A rig is designed to easily change the “road” surface, and convert it from wet to dry conditions, run the rubber wheel on suc

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35

Hu, Jian Jun, Zheng Bin He, Peng Ge, and Da Tong Qin. "Research on Control Strategy of Traction Control for Four Wheel Drive Vehicle." Advanced Materials Research 230-232 (May 2011): 1242–49. http://dx.doi.org/10.4028/www.scientific.net/amr.230-232.1242.

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In order to improve the performance of four wheel driver vehicle, structural characteristics of inter-axle torque distribution with planetary gear are analyzed, and a dynamic model of four wheel drive vehicle is established. A synthetic control strategy was proposed to achieve the engine throttle control, inter-axle torque distribution control and drive wheel brake control. Traction control system based on fuzzy logic control is designed. The simulation of traction control on split-µ road and low-µ road are carried out. The results show that, the traction control system for four wheel drive ve

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36

DOROFEEV, O. V., V. I. VOROBYEV, M. I. BORZENKOV, O. V. IZMEROV, and S. N. ZLOBIN. "TRACTION DRIVE OF LOCOMOTIVES WITH HIGH MOMENTUM COLLECTOR TRACTION ELECTRIC MOTOR." Fundamental and Applied Problems of Engineering and Technology 2 (2021): 118–29. http://dx.doi.org/10.33979/2073-7408-2021-346-2-118-129.

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The issues of development of traction drives of locomotives are considered. It was found that with the existing limitations of the traction force and the speed of continuous operation, asynchronous traction motors do not have clear advantages over collector motors. The possibility of creating collector motors for electric locomotives with a power equal to the used asynchronous ones has been proved, new technical solutions have been proposed for units that ensure the reliability of the latter when using high-torque motors (elastic gearwheel with chevron teeth, two-layer rubber-metal hinge, rubb

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Parhomenko, S. G., and G. G. Parhomenko. "Mathematical modeling of functioning of a tillage machine-tractor unit." Traktory i sel hozmashiny 85, no. 4 (2018): 55–62. http://dx.doi.org/10.17816/0321-4443-66405.

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The soil-cultivating machine-tractor unit undergoes continuously changing external influences that lead to fluctuations in the speed of movement, slippage of the tractor's driving wheels, loading of the transmission, and increased fuel consumption. The main sources of disturbances that cause the oscillations of the tractor are the unevenness of the traction resistance of the tillers and the unevenness of the field microprofile. The purpose of the research is to improve the process of functioning of the soil-processing machine-tractor unit by modeling of the influence of external action. The ma

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Avrunin, Grygoriy, Mikhail Podrigalo, Anton Yeremenko, and Irina Moroz. "ANALYSIS OF THE POSSIBILITY OF APPLICATION OF HYDRAULIC MOTOR-WHEELS IN TRANSMISSIONS HIGH-SPEED TRACTORS." Bulletin of the National Technical University "KhPI". Series: Hydraulic machines and hydraulic units, no. 2 (January 24, 2024): 24–32. http://dx.doi.org/10.20998/2411-3441.2023.2.03.

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Goal. The purpose of the article is to assess the possibility of developing a hydraulic fluid power in accordance with the standard traction-speed characteristics of the KhTZ-17021 wheeled tractor with the of using gearless drives of the driving wheels. For this purpose, the calculation of the hydraulic fluid power of the wheeled tractor was performed when using the latest radial piston multi-cycle hydraulic motor-wheels with a wide range of rotation frequency and adjustment of the working volume. Research methodology. An analysis of the traction-speed characteristics of the KhTZ- 17021 wheele

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Liu, Zhijie, Guoqiang Zhang, Guoping Chu, Hanlin Niu, Yazhou Zhang, and Fuzeng Yang. "Design Matching and Dynamic Performance Test for an HST-Based Drive System of a Hillside Crawler Tractor." Agriculture 11, no. 5 (2021): 466. http://dx.doi.org/10.3390/agriculture11050466.

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In recent years, research into and development of hillside tractors has become a popular topic in the field of agricultural engineering in China. To solve the main problems associated with a low adjustment range of the working speed, complex operation, and low safety for slope operation of medium-sized crawler tractors, a hydrostatic drive system that can be used for hillside crawler tractors was designed. According to the operation requirements of a hillside crawler tractor, the parameters of the three-cylinder diesel engine, hydrostatic transmission (HST), drive rear axle, and other key comp

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Zong, Jian, Yi Ruan, Ming Hui Chen, and Li Bo Xu. "Study and Implement on the Control System of Traction Locomotive Based on Torque Current Closed-Loop." Applied Mechanics and Materials 121-126 (October 2011): 3502–5. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.3502.

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In order to overcome the poor stationarity of traction locomotive during the operation mode switching, with rotor flux oriented vector control theory based on, torque model control strategy is adopted. It can overcome the DC bus pumping as Locomotive deceleration and barking. In this system, output torque can be controlled directly, experiments verify the system has good performance of stability and reliability, which can meet the traction locomotive control requirements.

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Kovbasa, S., N. Krasnoshapka, Y. Kolomiichuk, A. Kholosha, and B. Deleiko. "INFLUENCE OF THE SPEED SIGNAL DISCRETIZATION ON THE TORQUE VECTOR CONTROL OF INDUCTION MOTOR." Praci Institutu elektrodinamiki Nacionalanoi akademii nauk Ukraini 2024, no. 67 (2024): 14–21. http://dx.doi.org/10.15407/publishing2024.67.014.

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The paper presents the investigation of the impact of the discrete character of the measured by incremental encoder speed signal on the induction motor torque vector control in traction electrical drive. The study is based on mathemati-cal simulations for a direct vector flux-torque control system which provides direct asymptotic field-orientation, asymp-totic flux-torque trajectory tracking, and asymptotic decoupling of the torque and flux subsystems. The parameters of the induction motor and encoder used in the study correlate with used in the real traction electromechanical systems of troll

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M. A., Podrigalo, Artyomov M. P., Tretyak V. M., Krasnokutskyi V. M., and Omelchenko V. I. "Efficiency coefficient of tractor wheel drive while moving on ground." MECHANICS and AUTOMATICS of AGROINDUSTRIAL PRODUCTION, no. 1(116) (2023): 143–50. http://dx.doi.org/10.37204/2786-7775-2023-1-15.

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Purpose. The purpose of the study is to improve the energy efficiency of tractors when working on a deformable support surface by increasing the efficiency of the wheel drive due to the rational selection of its parameters. Methods. The methods of the theory of movement of traction vehicles and theoretical mechanics are used. Results. Analytical equations are compiled that describe the dependence of the interaction of wheels with pneumatic tires with the ground support surface. The effect of tangential soil compliance on the efficiency of a single wheel and wheel drive was determined, and the

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Ai, Xiaolan. "Development of Zero-Spin Planetary Traction Drive Transmission: Part 2 — Performance Testing and Evaluation." Journal of Tribology 124, no. 2 (2001): 392–97. http://dx.doi.org/10.1115/1.1405131.

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A tapered roller planetary traction drive based on a so-called zero-spin design was built for performance evaluation. The traction drive demonstrated, in many aspects, superb performance characteristics. The zero-spin design increased the torque capacity and enabled the traction drive to operate under both fully lubricated and starved lubrication conditions. The traction drive improved mechanical efficiency compared with traction drives of conventional designs and was able to achieve high efficiency up to 99 percent. The traction drive had satisfactory temperature performance.

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Waseem, Saeed, Warkozek Ghaith, and Sandouk Abbas. "Determining the Required Electric Power for the Traction of Electric Vehicle." Tishreen University Journal 40, no. 1 (2018): 18. https://doi.org/10.5281/zenodo.6326798.

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Electric Vehicles EVs are the Vehicles that use electric motor powered by Fuel Cells, Batteries, or Ultra capacitors to drive the vehicle. EVs have many advantages over internal combustion engines such as zero emissions, high efficiency, quiet operation, smooth movement, and fuel independent. The traction torque should be determined according to vehicle's load that must be exceeded to move the vehicle at the required speed. This study aims to analyze the mechanical forces applied on the vehicle, then modeling them to evaluate the traction power required for each case of operation. This mod

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Zubkov, Yuri V., and Vladislav E. Vereshagin. "Designing of traction motor stators core." Vestnik of Samara State Technical University. Technical Sciences Series 30, no. 4 (2023): 102–14. http://dx.doi.org/10.14498/tech.2022.4.7.

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Electric drive is widely used in automotive practice. Its basis is an electric traction motor (TM), which, compared with an internal combustion engine (ICE), has such advantages as high efficiency, high overload capacity, a wide range of speed control, and the possibility of torque direct transmission to the drive wheels. The main requirements for a traction motor are high efficiency over the entire load range, ease of speed and torque control, high overload capacity, small weight and dimensions, regenerative braking capability, wide speed control range, simplicity and ease of maintenance. The

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Zhdanovich, Ch I. "Continuously Variable Two-Flow Hydrostatic-Mechanical Transmission of Crawler Tractor." Science & Technique 23, no. 3 (2024): 251–60. http://dx.doi.org/10.21122/2227-1031-2024-23-3-251-260.

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The paper proposes an original design of a continuously variable two-flow hydrostatic-mechanical transmission, which ensures division of the power flow along the sides of the crawler tractor. To ensure stability of rectilinear motion, their volumetric and mechanical efficiency, the maximum pressure of the working fluid in the hydraulic transmission, the maximum speed and torque on the shaft of the hydraulic motor. The parameters of an unregulated hydraulic motor, an adjust-table pump and mechanical transmission elements are selected. A mathematical model of the rectilinear motion of a caterpil

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Pugachev, Alexander. "Induction Motor Traction Drive with Slipping Protection." Applied Mechanics and Materials 792 (September 2015): 101–6. http://dx.doi.org/10.4028/www.scientific.net/amm.792.101.

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The advantages and shortcomings of three-level voltage source inverters to be applied on locomotive traction electric drives are highlighted in relation to two-level ones. To protect wheels from slipping on rails, the control system is designed. The control system with protection from slipping uses system of direct torque control as the subordinated contour to produce control signals on voltage source inverter. The topology and principles of operation of both protections from slipping and direct torque control of traction induction motor with three-level voltage source inverters are described.

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Nguyen Quang Thieu and V. V. Markov. "Rational control laws asynchronous electric traction." Izvestiya MGTU MAMI 5, no. 1 (2011): 70–76. http://dx.doi.org/10.17816/2074-0530-69863.

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The paper considers the optimal control laws for asynchronous traction electric motors to minimize various types of losses, minimize consumption of active and reactive power, maximum overload capacity. The authors established that the joint management of the maximum torque and minimum total losses in the motor is most efficient traction control law for asynchronous traction electric motors.

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Ковалев, Роман, Roman Kovalev, Алексей Тарасов, et al. "Dynamic processes in the joint regulation asynchronous traction motors truck of the locomotive." Bulletin of Bryansk state technical university 2014, no. 4 (2014): 129–32. http://dx.doi.org/10.12737/23108.

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Examines the dynamic processes in the traction drive with direct torque control regulation asynchronous traction motors are connected in parallel to one inverter, at the limit of adhesion of the wheels and rails, the results of the simulation.

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Li, Minggang, Hanxu Sun, Long Ma, Dongshuai Huo, Panpan Gao, and Zhantong Wang. "Experimental Study on the Longitudinal Motion Performance of a Spherical Robot Rolling on Sandy Terrain." Actuators 13, no. 8 (2024): 289. http://dx.doi.org/10.3390/act13080289.

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To provide the necessary theoretical models of sphere–soil interaction for the structural design, motion control, and simulation of spherical robots, this paper derives analytical expressions for traction force and driving torque when spherical robots slide and sink into sandy terrain, based on terramechanics and multibody dynamics. Furthermore, orthogonal experimental analysis identifies the load, joint angular acceleration, and maximum joint angular velocity of spherical robots as influencing factors, highlighting that the load significantly affects their longitudinal motion performance. Exp

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