Variable comprehensive coefficient draft-position integrated tillage depth control method of tractor based on traction resistance interval division

Authors

  • Xiaoxu Sun 1. College of Engineering, Nanjing Agricultural University, Nanjing 210031, China http://orcid.org/0000-0002-3806-9172
  • Yue Song 1. College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
  • Lin Wang 2. State Key Laboratory of Intelligent Agricultural Power Equipment, Luoyang 470139, China
  • Zhixiong Lu 1. College of Engineering, Nanjing Agricultural University, Nanjing 210031, China http://orcid.org/0000-0002-1687-4058
  • Jin Qian 1. College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
  • Tao Wang 3. College of Emergency Management, Nanjing Tech University, Nanjing 201009, China

DOI:

https://doi.org/10.25165/ijabe.v18i6.9394

Keywords:

tractor, variable comprehensive coefficient, draft-position integrated tillage depth control, traction resistance

Abstract

Aiming at the problem that the draft-position integrated tillage depth control method with fixed comprehensive coefficient of tractor electro-hydraulic hitch system is difficult to adapt to the working environment with large changes in soil conditions, a tractor draft-position integrated tillage depth control method with variable comprehensive coefficient was proposed. A comprehensive coefficient control scheme based on traction resistance was designed and its working principle was clarified. Aiming at the time-varying tillage depth control system, a tillage depth control algorithm based on the sliding mode control with differential observer was designed. In order to verify the performance of the control scheme, a control system simulation model and a bench test platform were built, and the performance was compared with the draft-position integrated control method with fixed comprehensive coefficient of 0.5. The results showed that the variable comprehensive coefficient tillage depth control method can automatically adjust the comprehensive coefficient according to the change of soil conditions, and has higher traction efficiency. In the small resistance range, it can better ensure the quality of operation; in the large resistance range, it can ensure the engine performance and protect the tractor from damage. This method is more adaptable to the complex field operation environment, which provides a reference for the research of tillage depth control method. Key words: tractor; variable comprehensive coefficient; draft-position integrated tillage depth control; traction resistance DOI: 10.25165/j.ijabe.20251806.9394 Citation: Sun X X, Song Y, Wang L, Lu Z X, Qian J, Wang T. Variable comprehensive coefficient draft-position integrated tillage depth control method of tractor based on traction resistance interval division. Int J Agric & Biol Eng, 2025; 18(6): 66–74.

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Published

2025-12-26

How to Cite

Sun, X., Song, Y., Wang, L., Lu, Z., Qian, J., & Wang, T. (2025). Variable comprehensive coefficient draft-position integrated tillage depth control method of tractor based on traction resistance interval division. International Journal of Agricultural and Biological Engineering, 18(6), 66–74. https://doi.org/10.25165/ijabe.v18i6.9394

Issue

Vol. 18 No. 6 (2025): IJABE

Section

Power and Machinery Systems

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