Automatic wheel slip control system in field operations for 2WD tractors

In this study, a control system that automatically adjusts the working depth of the tractor tillage equipment has been developed in order to keep the wheel slip occurring in agricultural tractors during the tillage activities at the determined limit value. The developed automatic control system continuously measured the wheel slip on the tractor drive wheels and reduced the tillage depth adjusted for the wheel slip increase. While the amount of wheel sip was at the allowed level, the tillage equipment worked at the set depth value. In the study, a driver warning system is also designed to alert the driver to reduce the tillage depth when the amount of wheel slip exceeds the specified limit value. The driver warning system warns the driver visually with the help of colored LEDs and audibly with a buzzer according to the measured wheel slip value. The developed automatic control system was compared separately with the designed driver warning system and the operator's own control. The wheel slip value was calculated by comparing the forward speed of the tractor with the speed of the drive wheels. The automatic control system and driver warning system were installed on a New Holland TD110 agricultural tractor and trials were carried out in real field conditions. As a result of the trials, according to the driver warning system and operator control, it was determined that there was a 3-29% reduction in wheel slip and a 22-30% reduction in fuel consumption in soil tillage activities carried out with automatic control system. On the other hand, the draft force decreased by more than 5% compared to the operator control in the automatic control system. However, it was observed that there was almost no change in the average tillage depth between the control methods.

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“…The minimum tillage depth measured was 20.5 cm. Similar results have been reported in past studies [1,8,26].…”

Section: Resultssupporting

confidence: 93%

Toprak İşlemede Pati̇najin Otomati̇k Kontrolü

Soylu

Çarman

2020

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

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“…Errors occur when tractor non-driven wheels slip 2. Limited accuracy Raheman et al [69] ; Al-Suhaibani et al [44] ; Pranav et al [70,71] ; Kumar et al [72] ; Kumar et al [73]…”

Section: Measurement Methods For Tractor Slip Ratementioning

confidence: 99%

“…Pranav et al [70,71] designed and developed a microcontroller-based automatic wheel slip control system for a two-wheel drive (2WD) tractor (Figure 9a).…”

Section: Slip Control Methods Based On Electro-hydraulic Controlmentioning

confidence: 99%

Review of electro-hydraulic hitch system control method of automated tractors

Wang¹,

Dong²,

Wang³

et al. 2021

International Journal of Agricultural and Biological Engineering

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The automatic and intelligent degree of tractor hitch system determines the operations quality, efficiency, tractor power output and energy consumption, and automatic control of electro-hydraulic hitch is one of the key technical problems in the realization of automated tractor. In this study, the adjustment methods and characteristics of electro-hydraulic hitch system were summarized. The development of electro-hydraulic hitch control technologies was elaborated and analyzed from both the electro-hydraulic control strategy and slip control strategy perspectives. The implementation methods and control characteristics were discussed. A new idea for the development of automated tractor was put forward that integrating cutting-edge technologies such as big data, fusion control and artificial intelligence. In addition, based on the precise and efficient control of electro-hydraulic hitch system, a high reliability of the control system of the tractor with intelligent application of the control algorithm was obtained. The results can provide a reference for the precise operation of automated tractors under the big data in agriculture.

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“…However, the anti-skidding technology is not very mature because of its single function. 11 The slip rate of the tractor can explain the power and traction reserved, which can directly affect the working performance; [12][13][14] however, in the case of complex road conditions, the slip rate is difficult to accurately measure in real time. Although the slip rate calculation only requires the vehicle's speed and the wheel speed, the error of the input signal is amplified in the process of calculation.…”

Section: Introductionmentioning

confidence: 99%

The control of high-clearance electric vehicles based on pavement parameter estimations

Zhou

Wang

et al. 2018

Advances in Mechanical Engineering

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Agricultural high-clearance vehicles are different from traditional vehicles. Agricultural vehicles have particular features that are mainly suited for the agricultural vehicle's working environment. Farmland is relatively complex, mostly unknown and unstructured environment, and it is difficult to accurately model. The complex characteristics of farmland or hilly terrain demands that the agricultural machinery on the ground environment must have sufficient robustness. In this article, a soft road high vacant land vehicle model is established, and then, through the observation of force of tyres and the use of an existing tyre model recursive least square parameter estimation, the road adhesion coefficient is obtained. Considering that the sliding mode control can effectively solve the parameter uncertain nonlinear system, the model established herein has the advantages of robustness and fast response. The sliding mode control and the incremental proportional-integral control were used to test the uniform pavement and the separate pavement, respectively, and the results showed that the sliding mode control was closer to the target value than the incremental proportional-integral control but was less stable than the incremental proportional-integral control on the uniform road surface; in addition, the sliding mode control was superior to the incremental proportional-integral control on the separate road surface.

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Automatic wheel slip control system in field operations for 2WD tractors

Cited by 42 publications

References 10 publications

Toprak İşlemede Pati̇najin Otomati̇k Kontrolü

Toprak İşlemede Pati̇najin Otomati̇k Kontrolü

Review of electro-hydraulic hitch system control method of automated tractors

The control of high-clearance electric vehicles based on pavement parameter estimations

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