Mathematical simulation of the automatic control of the tractor power unit

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BACKGROUND: Many manufacturers of agricultural tractors have machines with automatic gearboxes in their product line. The development of the design of this type of transmissions, the control system and the algorithm of its operation is an urgent technical task.

The article considers the issues of mathematical simulation of the working process of the automatic transmission of a wheeled tractor and the automatic transmission control system.

AIMS: The purpose of the work was to determine the optimal control laws of automatic control of a wheeled agricultural tractor engine and transmission in various operating modes using a digital model of the tractor transmission.

METHODS: Simulation of working conditions is performed in the Matlab program digital software packages and its applications – Simulink, Simscape. At the same time, with the help of fundamental data blocks of these applications, models of the physical components of the gearbox and the machine engine and the tractor power transmission control system, are created.

RESULTS: The application procedure of the MATLab–Simulink, Simscape software package for mathematical modeling of transmission operation control is considered. With the help of the developed mathematical model, a simulation of the tractor power unit operation in the main operating modes was carried out in order to optimize the characteristics of the tractor control system.

The scientific novelty of the research lies in the selection and optimization of the transmission control laws in accordance with the requirements to agricultural tractors with an automatic step gearbox.

CONCLUSION: The practical utility (value) of the research lies in the possibility of using the proposed control laws to develop a transmission control system for new tractors with an automatic step gearbox.

作者简介

Sergey Hoodorozhkov

Peter the Great St. Petersburg Polytechnic University

Email: xcu-55@mail.ru
ORCID iD: 0000-0002-5646-2998
SPIN 代码: 4405-9649

Dr. Sci. (Engin.), Professor Higher school of transport

俄罗斯联邦, 29 Polytechnicheskaya, St.Petersburg 195251

Andrey Krasilnikov

Peter the Great St. Petersburg Polytechnic University

Email: a_kr36@mail.ru
ORCID iD: 0000-0002-8680-3175
SPIN 代码: 4268-7732

Cand. Sci. (Engin.), Associate Professor Higher school of transport

俄罗斯联邦, 29 Polytechnicheskaya, St.Petersburg, 195251

Matvey Gubachov

Peter the Great St. Petersburg Polytechnic University

编辑信件的主要联系方式.
Email: matvey1596@mail.ru
ORCID iD: 0000-0002-7206-1385
SPIN 代码: 5915-4536

Engineer Higher, school of transport

俄罗斯联邦, 29 Polytechnicheskaya, St.Petersburg, 195251

参考

  1. Chancellor WJ, Thai NC. Automatic control of tractor transmission ratio and engine speed. Transaction of the ASAE. 1984;27(3):642–646.
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  3. Gubachev MS. Optimizatsiya avtomaticheskogo upravleniya dvigatelem i transmissiei sel’skokhozyai-stvennogo kolesnogo traktora [vypusknaya kvalifikatsionnaya rabota magistra]. Saint Petersburg: Sankt-Peterburgskii politekhnicheskii universitet Petra Velikogo, 2020.
  4. Newman K, Kargul J, Barba D. Development and Testing of an Automatic Transmission Shift Schedule Algorithm for Vehicle Simulation. SAE International Journal of Engines. 2015;8(3): 1417–1427. doi: 10.4271/2015-01-1142
  5. Lei Y, Liu K, Zhang Y, et al. Adaptive Gearshift Strategy Based on Generalized Load Recognition for Automatic Transmission Vehicles. Mathematical Problems in Engineering. 2015;2015:1–12. doi: 10.1155/2015/614989
  6. Ngo DV. Gear shift strategies for automotive transmissions. Gear shift strategies for automotive transmissions [Phd Thesis]. Eindhoven: Technische Universiteit Eindhoven, 2012. Available from: https://research.tue.nl/en/publications/gear-shift-strategies-for-automotive-transmissions Accessed: Jun 13, 2022.
  7. Liangjiea G, Tiezhub Z, Yongzhic M. Shift Schedule of Automatic Transmission of Construction Vehicle Based on Matlab/Simulink. Proceedings of AMEII 2016; 2016 Apr 9–10; Hangzhou, Zhejiang, China. Available at: https://www.atlantis-press.com/article/25854676.pdf Accessed: Jun 13, 2022.
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  9. Ksenevich IP, Tarasik VP. Teoriya i proektirovanie avtomaticheskikh sistem: uchebnik dlya studentov vyssh. uchebn. zavedenii. Moscow: Mashinostroenie, 1996. (In Russ).
  10. The MathWorks, Inc. Simscape User’s Guide [Internet]. Available from: https://manualzz.com/doc/4120719/simscape-user-s-guide Accessed: Jun 13, 2022.
  11. The MathWorks, Inc. Using SIMULINK [Internet]. Available from: https://manualzz.com/doc/863459/using-simulink Accessed: Jun 13, 2022.
  12. Hoodorozhkov S, Demidov N, Krasilnikov A. Dynamics of Working Processes in Automatic Transmission of Tractors. International Review of Mechanical Engineering (IREME). 2020;14(2). doi: 10.15866/ireme.v14i2.18264
  13. Demidov NN, Krasilnikov AA, Hoodorozhkov SI. Tractor Gearbox: Research of Shifting Gears’ Processes. The Russian Automobile and Highway Industry Journal. 2020;17(1):58–71. doi: 10.26518/2071-7296-2020-17-1-58-71
  14. Dvigateli YaMZ-536, YaMZ-5361, YaMZ-5362, YaMZ-5363, YaMZ-5364: Rukovodstvo po ekspluatatsii 536.3902150 RE [Intenet]. Available at: https://izh-maz.ru/data/documents/536.3902150-RE.pdf Accessed: Jun 13, 2022.

补充文件

附件文件
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1. JATS XML
2. Fig. 1. Theoretical traction characteristic of a tractor with automatic gear shifting.

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3. Fig. 2. Beam diagram of two adjacent tractor gears.

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4. Fig. 3. Simulink-Simscape model of a machine and tractor unit.

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5. Fig. 4. Driver subsystem.

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6. Fig. 5. State diagram of the selected mode.

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7. Fig. 6. Actuators subsystem block diagram.

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8. Fig. 7. Body block structure.

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9. Fig. 8. Calculation scheme of a tractor with a hook load.

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10. Fig. 9. Parameters of working processes of a tractor with an automatic control system at maximum power.

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11. Fig. 10. Implementation of constant power mode.

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