Abstract Farmers will often have a single tractor which they use for many different types of farmwork. A alone does not do any work, it is essentially always paired with, powering, and/or moving something else, an implement mounted on its front or rear. It particularly common in Europe, where there are small regional manufacturers, that farm contains tractors and implements from companies. The ...

A simple but viable whole stalk harvester for operating under local field conditions, which is compatible with existing manual and mechanical loading and hauling systems, is described. The efficiency and output of the cutter which has been tested over a number of harvesting seasons, and the operating costs are estimated. Various systems of handling both green and burnt cane by the Midway are co...

This study describes chores when farmers were either fatally or seriously injured and required emergency medical treatment as a result of overturns of tractors with or without rollover protective structures (ROPS). Data from the 2002 Kentucky Farm Tractor Overturn Survey were used for this study. The data were collected by a telephone survey of a population-based random sample of 6063 (7.98%) o...

A tractor-trailer robot consists of a carlike tractor towing a passive trailer. Due to its highly nonholonomic nature, the kinematics of this type of robot are complicated and di cult to compute. We present exact closed-form solutions for the kinematic parameters of a tractortrailer robot and use them to construct an exact and e cient motion planner in the absence of obstacles. This local plann...

soil compaction is a major problem in many parts of the world. the determination of soil compaction profiles requires fast sampling systems to keep pace with the change in soil moisture condition over time. soil cone penetrometers are commonly used for this purpose. a tractor-mounted soil cone penetrometer was designed and fabricated with multiple probes and the ability to determine cone index ...

In this paper a new leader-follower formation of nonholonomic mobile robots is studied. The follower is a car-like vehicle and the leader is a tractor pulling a trailer. The leader moves along assigned trajectories and the follower is to maintain a desired distance and orientation to the trailer. A sliding mode control scheme is proposed for asymptotically stabilizing the vehicles to a time-var...

The driving speed of modern tractors increased within last years up to 60 km/h. Together with the driving speed, the safety and comfort requirements are increasing as well. Since modern agricultural tractors still don’t have a rear axle suspension, their driving dynamics behaviour can become critical at certain situations. To be able to predict such critical situations, a multibody model of a t...

A new method is described that can be used to decompose human controlled agricultural operations into an autonomous tractor. Four main levels of subsumption have been identified: Operation, Task, Optimisation and Primitive Actions where each level is subsumed by the level above. Tasks were classified into two distinctive roles, deterministic tasks that can be planned and optimised before the op...

Based on the analysis of the structure and the power transmission system of aircraft towing tractor, a new project applying hydraulic drive hybrid power is put forward considering the requirements of towing aircraft and working process without towbar. As the testing and controlling signals of the system are multi channel and distributed, the testing program is designed via LXI bus. The experime...