In a typical automatic guidance system for agricultural machines, the guidance system controls only one degree of freedom; either the steering angle of the front wheels of the tractor or other steering equipment is used for steering. In a tractor with the multiple degrees of freedom, like four wheel steering, the guidance system may use both the degrees of freedom for path tracking. However, th...

in this research was designed a differential lock control system. the system was test and evaluated after fabrication and its accuracy and precision was determined. a field experiment with three replications was conducted to investigate the effect of gear ratio, the method of tractor movement during plowing and differential position on drive wheel slippage and fuel consumption of mf399 tractor ...

In this paper, we present a multi-modal dataset for obstacle detection in agriculture. The dataset comprises approximately 2 h of raw sensor data from a tractor-mounted sensor system in a grass mowing scenario in Denmark, October 2016. Sensing modalities include stereo camera, thermal camera, web camera, 360 ∘ camera, LiDAR and radar, while precise localization is available from fused IMU and G...

A small, truck-type slewing crane with a grab was centrally mounted at the front of an 8-ton box-type tipping trailer. The crane and grab were operated by the hydraulic system of the tractor. Attempts to modify the control valves of the crane were not successful and it was concluded that the standard controls supplied for truck-type cranes were not suitable for this purpose. A standard double-a...

This study investigates the influence of blade lifting angles, tractor forward speed, and power take off (PTO) speed on degree mulching. Four blades with different two PTO speeds, three speeds were assessed using parametric test at Universiti Putra Malaysia oil palm plantation. The result shows that best-fit regression equation was a quadratic high coefficient determination. It indicates any ch...

Previous studies have reported that tractors are responsible for high proportions of fatal and nonfatal agricultural injuries. However, many common and preventable risk factors, conditions, and associated costs related to tractor-related injuries have not been investigated. This case-based study used workers' compensation data to investigate tractor-related injuries. The objectives of this stud...

The article presents research results of a machine-tractor unit that performs two technological operations simultaneously: (i) chopping plant residues (sunflower stubble); (ii) covering the chopped stubble with soil. first operation is carried out front-mounted chopper, and second one rear-mounted plough. chopper’s working devices are rotated by tractor’s front power take-off (PTO), which has o...